CN112892154A - Sled dress pressure swing adsorption equipment - Google Patents

Sled dress pressure swing adsorption equipment Download PDF

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Publication number
CN112892154A
CN112892154A CN202110084791.0A CN202110084791A CN112892154A CN 112892154 A CN112892154 A CN 112892154A CN 202110084791 A CN202110084791 A CN 202110084791A CN 112892154 A CN112892154 A CN 112892154A
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China
Prior art keywords
adsorption tower
valve
connecting pipe
top opening
adsorption
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CN202110084791.0A
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Chinese (zh)
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徐占杰
刘克勇
王明
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Shandong Jinzhi Environmental Protection Technology Co ltd
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Shandong Jinzhi Environmental Protection Technology Co ltd
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Priority to CN202110084791.0A priority Critical patent/CN112892154A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B01D53/053—Pressure swing adsorption with storage or buffer vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40003—Methods relating to valve switching
    • B01D2259/40005—Methods relating to valve switching using rotary valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40007—Controlling pressure or temperature swing adsorption

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The invention relates to a skid-mounted pressure swing adsorption device, which comprises an adsorption mechanism, a driving mechanism and a buffer mechanism, wherein a control device: the adsorption mechanism is provided with a plurality of groups, and comprises a first base and a plurality of adsorption towers, wherein the adsorption towers are provided with top openings and bottom openings; actuating mechanism, including second base, mount pad, rotary valve, the rotary valve includes valve, driving motor, lower valve: the lower valve is equipped with down and links the pipe, house steward down, house steward locates down valve central authorities down, house steward is equipped with many as the circular array in centre of a circle below linking the pipe down, and be linked together with the end opening of a plurality of adsorption towers respectively, it is equipped with even pipe to go up the valve, go up house steward, it locates valve central authorities to go up house steward, house steward is equipped with many as the circular array in centre of a circle above going up even pipe, and be linked together with the apical pore of a plurality of adsorption towers respectively, buffer gear includes the third base, the finished product gas buffer tank, the product gas buffer tank, analysis gas buffer tank. The skid-mounted pressure swing adsorption device is high in integration level; the skid-mounted installation mode is very convenient and low in installation cost.

Description

Sled dress pressure swing adsorption equipment
Technical Field
The invention relates to the technical field of high-pressure purification of industrial gas, in particular to a skid-mounted pressure swing adsorption device.
Background
Industrial gases, which are special pressurized gases used in various industrial manufacturing processes, are generally compressed into a liquid state, sublimated into a gaseous state in an evaporator, and applied to production needs in order to improve convenience in storage and transportation. Industrial gases are of a wide variety, including: inert gases, combustible gases, reaction gases, and the like.
Wherein, important industrial gas contains other impurities in the processes of production, transportation and evaporation. Currently, the conventional industrial gas pressure/high pressure purification mode is an adsorption process. The adsorption equipment under the process is used for intermittently adsorbing by a plurality of adsorption towers and adsorbing one by one through pipelines and one-way valves, and the mode has the following defects:
1. the number of pipelines and valves of the adsorption equipment is large, so that the number of fault points is large in the adsorption process;
2. the existing installation mode is carried out on site, the installation period is long, and the installation cost is high;
3. the adsorption equipment occupies a large area.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a skid-mounted pressure swing adsorption device which is high in integration level; the skid-mounted installation mode is very convenient and low in installation cost.
The technical scheme adopted by the invention is as follows:
the utility model provides a sled dress pressure swing adsorption equipment, includes adsorption apparatus structure, actuating mechanism, buffer gear, controlling means:
the adsorption mechanism is provided with a plurality of groups, and comprises a first base, a plurality of adsorption towers are fixedly arranged on the first base in parallel, and the upper end and the lower end of each adsorption tower are respectively communicated with a top port and a bottom port;
the driving mechanism comprises a second base arranged between two groups of first bases, the upper end of the second base is fixedly provided with a mounting seat, the mounting seat is fixedly provided with a rotary valve which comprises an upper valve and a lower valve which are respectively arranged at the upper end and the lower end, a driving motor is arranged between the upper valve and the lower valve, the driving motor is electrically connected with the control device, the lower valve is communicated with a lower connecting pipe and a lower header pipe, the lower main pipe is arranged in the center of the lower valve, the lower connecting pipes are provided with a plurality of lower main pipes in a circular array with the center of a circle, and are respectively communicated with bottom ports arranged on a plurality of adsorption towers, the lower main pipe is communicated with a three-way valve, the upper valve is communicated with an upper connecting pipe and an upper main pipe, the upper header pipe is arranged in the center of the upper valve, and a plurality of upper connecting pipes are arranged in a circular array with the upper header pipe as the circle center and are respectively communicated with top openings arranged on the adsorption towers;
buffer gear is including setting up in the third base of first base, second base one side, fixed mounting is provided with finished product gas buffer tank, analytic gas buffer tank side by side on the third base, be provided with the finished product gas port that is linked together with last house steward on the finished product gas buffer tank, be provided with product gas port, analytic gas port on product gas buffer tank, the analytic gas buffer tank respectively, product gas port, analytic gas port are linked together with the three-way valve respectively.
Further, first base, second base, third base set up to by "worker" style of calligraphy steel welded frame type structure to three fixed connection, its fixed mode is: welding and/or screwing.
Furthermore, the mounting seat is of a frame structure welded by square steel and used for penetrating a lower connecting pipe and a lower header pipe.
Further, the upper end intercommunication of adsorption tower, finished product gas buffer tank, analysis gas buffer tank is provided with the relief valve, the exhaust end of relief valve assembles the intercommunication and is provided with the gas package, gas package export, analysis gas buffer tank export all are linked together with torch equipment.
Further, the number of the adsorption towers is 12, which are respectively as follows:
the adsorption tower comprises a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, an eleventh adsorption tower and a twelfth adsorption tower;
the number of the lower connecting pipes and the upper connecting pipes arranged on the rotary valve is 12.
Furthermore, the control device comprises a programmable logic controller, a frequency converter is electrically connected to the programmable logic controller, and the output end of the frequency converter is electrically connected with the driving motor.
Furthermore, the three-way valve is set to be an L-shaped automatic control three-way valve and is electrically connected with a programmable logic controller of the control device.
Furthermore, a speed reducer is arranged on a rotating shaft of the driving motor, and an output rotating shaft of the speed reducer is respectively and fixedly connected with the valve rods of the upper valve and the lower valve in a coaxial mode.
Further, the lower extreme fixed mounting of adsorption tower is provided with the upper fixed disk, be provided with under the upper fixed disk with first base fixed mounting, be provided with respectively between upper fixed disk, the lower fixed disk with both fixed connection's semicircle arcuation backup pad, the backup pad is provided with a plurality ofly for wear to establish down the connecting pipe.
A pressure swing adsorption process comprising:
the control device controls the operation of the frequency converter through the programmable logic controller, so that the driving motor rotates to sequentially drive the speed reducer, the valve rod of the upper valve and the valve rod of the lower valve to coaxially and synchronously rotate, and in the process of rotating for one circle, 12 adsorption towers sequentially complete an adsorption process, an uniform lifting/uniform lowering process and an analysis process;
the 12 adsorption towers are respectively communicated with an upper main pipe and other adsorption towers through upper valves by upper connecting pipes communicated with top openings of the adsorption towers; the 12 adsorption towers are respectively communicated with a lower main pipe through lower valves through lower connecting pipes communicated with bottom openings of the adsorption towers;
A. the control device controls the three-way valve through the programmable logic controller to enable the gas port of the product to be communicated with the lower header pipe, and carries out an adsorption process and an equal lifting/equal lowering process through the following steps:
a1, when the driving motor rotates to enable the valve rods of the upper valve and the lower valve to be in the 0-degree position:
the top openings of the first adsorption tower, the second adsorption tower and the third adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the fourth adsorption tower is communicated with the top opening of the twelfth adsorption tower through an upper connecting pipe;
the top opening of the fifth adsorption tower is communicated with the top opening of the eleventh adsorption tower through an upper connecting pipe;
the top opening of the sixth adsorption tower is communicated with the top opening of the tenth adsorption tower through an upper connecting pipe;
the top opening of the seventh adsorption tower is communicated with the top opening of the ninth adsorption tower through an upper connecting pipe;
the top opening of the eighth adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the first adsorption tower, the second adsorption tower and the third adsorption tower with the lower header pipe through the lower connecting pipe;
bottom openings of a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, an eleventh adsorption tower and a twelfth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower header pipe, a lower valve and a lower connecting pipe, is adsorbed in the first adsorption tower, the second adsorption tower and the third adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper header pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a2, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 30 degrees:
the top openings of the second adsorption tower, the third adsorption tower and the fourth adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the fifth adsorption tower is communicated with the top opening of the first adsorption tower through an upper connecting pipe, the first adsorption tower performs first pressure reduction, and the fifth adsorption tower performs pressure increase;
the top opening of the sixth adsorption tower is communicated with the top opening of the twelfth adsorption tower through an upper connecting pipe;
the top opening of the seventh adsorption tower is communicated with the top opening of the eleventh adsorption tower through an upper connecting pipe;
the top opening of the eighth adsorption tower is communicated with the top opening of the tenth adsorption tower through an upper connecting pipe;
the top opening of the ninth adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the second adsorption tower, the third adsorption tower and the fourth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, an eleventh adsorption tower, a twelfth adsorption tower and the first adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a second adsorption tower, a third adsorption tower and a fourth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a3, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 60 degrees:
the top openings of the third adsorption tower, the fourth adsorption tower and the fifth adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the sixth adsorption tower is communicated with the top opening of the second adsorption tower through an upper connecting pipe, the second adsorption tower performs first pressure reduction, and the sixth adsorption tower performs pressure increase;
the top opening of the seventh adsorption tower is communicated with the top opening of the first adsorption tower through an upper connecting pipe, the first adsorption tower performs second pressure reduction, and the seventh adsorption tower performs pressure increase;
the top opening of the eighth adsorption tower is communicated with the top opening of the twelfth adsorption tower through an upper connecting pipe;
the top opening of the ninth adsorption tower is communicated with the top opening of the eleventh adsorption tower through an upper connecting pipe;
the top opening of the tenth adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the third adsorption tower, the fourth adsorption tower and the fifth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, an eleventh adsorption tower, a twelfth adsorption tower, a first adsorption tower and a second adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a third adsorption tower, a fourth adsorption tower and a fifth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a4, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 90 degrees:
the top openings of the fourth adsorption tower, the fifth adsorption tower and the sixth adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the seventh adsorption tower is communicated with the top opening of the third adsorption tower through an upper connecting pipe, the third adsorption tower performs first pressure reduction, and the seventh adsorption tower performs pressure increase;
the top opening of the eighth adsorption tower is communicated with the top opening of the second adsorption tower through an upper connecting pipe, the second adsorption tower reduces the pressure for the second time, and the eighth adsorption tower increases the pressure;
the top opening of the ninth adsorption tower is communicated with the top opening of the first adsorption tower through an upper connecting pipe, the first adsorption tower is subjected to third pressure reduction, and the ninth adsorption tower is subjected to pressure increase;
the top opening of the tenth adsorption tower is communicated with the top opening of the twelfth adsorption tower through an upper connecting pipe;
the eleventh adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the fourth adsorption tower, the fifth adsorption tower and the sixth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, an eleventh adsorption tower, a twelfth adsorption tower, a first adsorption tower, a second adsorption tower and a third adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a fourth adsorption tower, a fifth adsorption tower and a sixth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is conveyed into a finished product gas buffer tank;
a5, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 120 degrees:
the top openings of the fifth adsorption tower, the sixth adsorption tower and the seventh adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the eighth adsorption tower is communicated with the top opening of the fourth adsorption tower through an upper connecting pipe, the fourth adsorption tower performs first pressure reduction, and the eighth adsorption tower performs pressure increase;
the top opening of the ninth adsorption tower is communicated with the top opening of the third adsorption tower through an upper connecting pipe, the third adsorption tower performs pressure reduction for the second time, and the ninth adsorption tower performs pressure increase;
the top opening of the tenth adsorption tower is communicated with the top opening of the second adsorption tower through an upper connecting pipe, the second adsorption tower is subjected to third pressure reduction, and the tenth adsorption tower is subjected to pressure increase;
the top opening of the eleventh adsorption tower is communicated with the top opening of the first adsorption tower through an upper connecting pipe, the first adsorption tower performs fourth pressure reduction, and the eleventh adsorption tower performs pressure increase;
the twelfth adsorption tower is in a closed state;
the lower valve is used for communicating bottom openings of the fifth adsorption tower, the sixth adsorption tower and the seventh adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of the eighth adsorption tower, the ninth adsorption tower, the tenth adsorption tower, the eleventh adsorption tower, the twelfth adsorption tower, the first adsorption tower, the second adsorption tower, the third adsorption tower and the fourth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a fifth adsorption tower, a sixth adsorption tower and a seventh adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a6, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to 150 degrees:
the upper valve is used for communicating the top openings of the sixth adsorption tower, the seventh adsorption tower and the eighth adsorption tower with the upper header pipe through upper connecting pipes;
the top opening of the ninth adsorption tower is communicated with the top opening of the fifth adsorption tower through an upper connecting pipe, the fifth adsorption tower performs first pressure reduction, and the ninth adsorption tower performs pressure increase;
the top opening of the tenth adsorption tower is communicated with the top opening of the fourth adsorption tower through an upper connecting pipe, the fourth adsorption tower performs secondary pressure reduction, and the tenth adsorption tower performs pressure increase;
the top opening of the eleventh adsorption tower is communicated with the top opening of the third adsorption tower through an upper connecting pipe, the third adsorption tower is used for carrying out third pressure reduction, and the eleventh adsorption tower is used for carrying out pressure increase;
the top opening of the twelfth adsorption tower is communicated with the top opening of the second adsorption tower through an upper connecting pipe, the second adsorption tower performs fourth pressure reduction, and the twelfth adsorption tower performs pressure increase;
the first adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the sixth adsorption tower, the seventh adsorption tower and the eighth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of the ninth adsorption tower, the tenth adsorption tower, the eleventh adsorption tower, the twelfth adsorption tower, the first adsorption tower, the second adsorption tower, the third adsorption tower, the fourth adsorption tower and the fifth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a sixth adsorption tower, a seventh adsorption tower and an eighth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a7, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 180 degrees:
the top openings of the seventh adsorption tower, the eighth adsorption tower and the ninth adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the tenth adsorption tower is communicated with the top opening of the sixth adsorption tower through an upper connecting pipe, the sixth adsorption tower performs first pressure reduction, and the tenth adsorption tower performs pressure increase;
the top opening of the eleventh adsorption tower is communicated with the top opening of the fifth adsorption tower through an upper connecting pipe, the fifth adsorption tower performs pressure reduction for the second time, and the eleventh adsorption tower performs pressure increase;
the top opening of the twelfth adsorption tower is communicated with the top opening of the fourth adsorption tower through an upper connecting pipe, the fourth adsorption tower is subjected to third pressure reduction, and the twelfth adsorption tower is subjected to pressure increase;
the top opening of the first adsorption tower is communicated with the top opening of the third adsorption tower through an upper connecting pipe, the third adsorption tower carries out fourth pressure reduction, and the first adsorption tower carries out first pressure increase;
the lower valve is used for communicating the bottom openings of the seventh adsorption tower, the eighth adsorption tower and the ninth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a tenth adsorption tower, an eleventh adsorption tower, a twelfth adsorption tower, a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower and a sixth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a seventh adsorption tower, an eighth adsorption tower and a ninth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is conveyed into a finished product gas buffer tank;
a8, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 210 degrees:
the top openings of the eighth adsorption tower, the ninth adsorption tower and the tenth adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the eleventh adsorption tower is communicated with the top opening of the seventh adsorption tower through an upper connecting pipe, the seventh adsorption tower performs first pressure reduction, and the eleventh adsorption tower performs pressure increase;
the top opening of the twelfth adsorption tower is communicated with the top opening of the sixth adsorption tower through an upper connecting pipe, the sixth adsorption tower performs secondary pressure reduction, and the twelfth adsorption tower performs pressure increase;
the top opening of the first adsorption tower is communicated with the top opening of the fifth adsorption tower through an upper connecting pipe, the fifth adsorption tower is used for carrying out third pressure reduction, and the first adsorption tower is used for carrying out second pressure increase
The top opening of the second adsorption tower is communicated with the top opening of the fourth adsorption tower through an upper connecting pipe, the fourth adsorption tower performs fourth pressure reduction, and the second adsorption tower performs first pressure increase;
the third adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the eighth adsorption tower, the ninth adsorption tower and the tenth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of an eleventh adsorption tower, a twelfth adsorption tower, a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower and a seventh adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in an eighth adsorption tower, a ninth adsorption tower and a tenth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a9, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to 240 degrees:
the top openings of the ninth adsorption tower, the tenth adsorption tower and the eleventh adsorption tower are communicated with an upper header pipe through upper connecting pipes by upper valves;
the top opening of the twelfth adsorption tower is communicated with the top opening of the eighth adsorption tower through an upper connecting pipe, the eighth adsorption tower performs first pressure reduction, and the twelfth adsorption tower performs pressure increase;
the top opening of the first adsorption tower is communicated with the top opening of the seventh adsorption tower through an upper connecting pipe, the seventh adsorption tower is used for carrying out second pressure reduction, and the first adsorption tower is used for carrying out third pressure increase;
the top opening of the second adsorption tower is communicated with the top opening of the sixth adsorption tower through an upper connecting pipe, the sixth adsorption tower is subjected to third pressure reduction, and the second adsorption tower is subjected to second pressure increase;
the top opening of the third adsorption tower is communicated with the top opening of the fifth adsorption tower through an upper connecting pipe, the fifth adsorption tower performs fourth pressure reduction, and the third adsorption tower performs first pressure increase;
the fourth adsorption tower is in a closed state;
the lower valve is used for communicating the bottom openings of the ninth adsorption tower, the tenth adsorption tower and the eleventh adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a twelfth adsorption tower, a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower and an eighth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a ninth adsorption tower, a tenth adsorption tower and an eleventh adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a10, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 270 degrees:
the top openings of the tenth adsorption tower, the eleventh adsorption tower and the twelfth adsorption tower are communicated with the upper header pipe through upper connecting pipes by the upper valves;
the top opening of the first adsorption tower is communicated with the top opening of the ninth adsorption tower through an upper connecting pipe, the ninth adsorption tower performs first pressure reduction, and the first adsorption tower performs fourth pressure increase;
the top opening of the second adsorption tower is communicated with the top opening of the eighth adsorption tower through an upper connecting pipe, the eighth adsorption tower performs second pressure reduction, and the second adsorption tower performs third pressure increase;
the top opening of the third adsorption tower is communicated with the top opening of the seventh adsorption tower through an upper connecting pipe, the seventh adsorption tower is used for carrying out third pressure reduction, and the third adsorption tower is used for carrying out second pressure increase;
the top opening of the fourth adsorption tower is communicated with the top opening of the sixth adsorption tower through an upper connecting pipe, the sixth adsorption tower performs fourth pressure reduction, and the fourth adsorption tower performs first pressure increase;
the fifth adsorption tower is in a closed state;
the lower valve is used for communicating bottom openings of the tenth adsorption tower, the eleventh adsorption tower and the twelfth adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of the first adsorption tower, the second adsorption tower, the third adsorption tower, the fourth adsorption tower, the fifth adsorption tower, the sixth adsorption tower, the seventh adsorption tower, the eighth adsorption tower and the ninth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in a tenth adsorption tower, an eleventh adsorption tower and a twelfth adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a11, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 300 degrees:
the top openings of the eleventh adsorption tower, the twelfth adsorption tower and the first adsorption tower are communicated with an upper header pipe through upper connecting pipes by an upper valve;
the top opening of the second adsorption tower is communicated with the top opening of the tenth adsorption tower through an upper connecting pipe, the tenth adsorption tower performs first pressure reduction, and the second adsorption tower performs fourth pressure increase;
the top opening of the third adsorption tower is communicated with the top opening of the ninth adsorption tower through an upper connecting pipe, the ninth adsorption tower is used for carrying out second pressure reduction, and the third adsorption tower is used for carrying out third pressure increase;
the top opening of the fourth adsorption tower is communicated with the top opening of the eighth adsorption tower through an upper connecting pipe, the eighth adsorption tower is subjected to third pressure reduction, and the fourth adsorption tower is subjected to second pressure increase;
the top opening of the fifth adsorption tower is communicated with the top opening of the seventh adsorption tower through an upper connecting pipe, the seventh adsorption tower performs fourth pressure reduction, and the fifth adsorption tower performs first pressure increase;
the sixth adsorption tower is in a closed state;
the lower valve is used for communicating bottom openings of the eleventh adsorption tower, the twelfth adsorption tower and the first adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of the second adsorption tower, the third adsorption tower, the fourth adsorption tower, the fifth adsorption tower, the sixth adsorption tower, the seventh adsorption tower, the eighth adsorption tower, the ninth adsorption tower and the tenth adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower main pipe, a lower valve and a lower connecting pipe, is adsorbed in an eleventh adsorption tower, a twelfth adsorption tower and a first adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper main pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
a12, when the driving motor rotates to rotate the valve rods of the upper valve and the lower valve to the position of 330 degrees:
the upper valve is used for communicating the top openings of the twelfth adsorption tower, the first adsorption tower and the second adsorption tower with the upper header pipe through upper connecting pipes;
the top opening of the third adsorption tower is communicated with the top opening of the eleventh adsorption tower through an upper connecting pipe, the eleventh adsorption tower performs first pressure reduction, and the third adsorption tower performs fourth pressure increase;
the top opening of the fourth adsorption tower is communicated with the top opening of the tenth adsorption tower through an upper connecting pipe, the tenth adsorption tower is used for carrying out second pressure reduction, and the fourth adsorption tower is used for carrying out third pressure increase;
the top opening of the fifth adsorption tower is communicated with the top opening of the ninth adsorption tower through an upper connecting pipe, the ninth adsorption tower is used for carrying out third pressure reduction, and the fifth adsorption tower is used for carrying out second pressure increase;
the top opening of the sixth adsorption tower is communicated with the top opening of the eighth adsorption tower through an upper connecting pipe, the eighth adsorption tower performs fourth pressure reduction, and the sixth adsorption tower performs first pressure increase;
the seventh adsorption tower is in a closed state;
the lower valve is used for communicating bottom openings of the twelfth adsorption tower, the first adsorption tower and the second adsorption tower with the lower header pipe through lower connecting pipes;
bottom openings of a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower and an eleventh adsorption tower are in a closed state;
at the moment, the gas in the product gas buffer tank sequentially passes through a product gas port, a three-way valve, a lower header pipe, a lower valve and a lower connecting pipe, is adsorbed in a twelfth adsorption tower, a first adsorption tower and a second adsorption tower, and then sequentially passes through an upper connecting pipe, an upper valve, an upper header pipe and a finished product gas port, and is introduced into a finished product gas buffer tank;
B. the control device controls the three-way valve through the programmable logic controller, so that the analysis air port is communicated with the lower header pipe, and meanwhile, the programmable logic controller controls the frequency converter to adjust the driving motor to rotate fast, so that the analysis process is carried out through the following steps in the process of rotating the valve rods of the upper valve and the lower valve:
the lower valve communicates the bottom openings of the three adjacent adsorption towers with the lower main pipe through the lower connecting pipe, and simultaneously, the lower valve communicates the bottom openings of the three adjacent adsorption towers with the lower main pipe through the lower connecting pipe;
the high pressure in the finished product gas buffer tank and the low pressure in the analysis gas buffer tank have pressure difference;
the product gas in the product gas buffer tank sequentially passes through a product gas port, an upper header pipe, an upper valve and an upper connecting pipe, and is resolved in the adsorption tower, and the resolving gas sequentially passes through a lower connecting pipe, a lower valve, a lower header pipe, a three-way valve and a resolving gas port until the resolving gas in the buffer tank.
The skid-mounted pressure swing adsorption device has the advantages that:
1. the integration level is improved through the rotary valve, the occupied area is small, and a safe distance is provided for other production equipment;
2. through the skid-mounted installation mode, the installation period is shortened, and the installation cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention, reference will now be made in brief to the accompanying drawings, which are needed in the description, and in which embodiments of the present invention are illustrated.
FIG. 1 is a general perspective view of a skid mounted pressure swing adsorption apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a top view arrangement of a skid mounted pressure swing adsorption apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view of an adsorption mechanism of a skid-mounted pressure swing adsorption apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic view of an adsorption tower of a skid-mounted pressure swing adsorption apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a driving mechanism of a skid-mounted pressure swing adsorption apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic view of a buffering mechanism of a pressure swing adsorption skid-mounted device according to an embodiment of the present invention;
FIG. 7 is a schematic perspective view of a six-channel rotary valve based pressure swing adsorption skid-mounted unit according to an embodiment of the present invention;
FIG. 8 is a schematic top view of a six-channel rotary valve-based arrangement of a pressure swing adsorption skid-mounted apparatus according to an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a nine-channel rotary valve based pressure swing adsorption skid-mounted apparatus according to an embodiment of the present invention;
FIG. 10 is a schematic top view of a nine-channel rotary valve based arrangement of a pressure swing adsorption skid according to an embodiment of the present invention.
In the drawing, the following steps are carried out,
10. an adsorption mechanism 11, a first base 12, an adsorption tower 13, a top opening 14, a bottom opening 15, an upper fixed disk 16, a support plate 17 and a lower fixed disk,
20. a driving mechanism 21, a second base 22, a mounting seat 23, a rotary valve 231, a lower valve 232, a driving motor 233, an upper valve 24, a lower connecting pipe 25, a lower manifold 26, a three-way valve 27, an upper connecting pipe 28, an upper manifold,
30. a buffer mechanism 31, a third base 32, a product gas buffer tank 33, a product gas buffer tank 34, a desorption gas buffer tank 35, a product gas port 36, a product gas port 37 and a desorption gas port,
a. the adsorption tower comprises a first adsorption tower, a second adsorption tower, a third adsorption tower, a fourth adsorption tower, a fifth adsorption tower, a sixth adsorption tower, a seventh adsorption tower, an eighth adsorption tower, a ninth adsorption tower, a tenth adsorption tower, a k eleventh adsorption tower, a l twelfth adsorption tower.
Detailed Description
In order to clearly and clearly illustrate the specific implementation objects and the implementation modes of the invention, the technical scheme of the invention is completely described below, and the described examples are a part of the examples of the invention, but not all the examples. All other embodiments based on the described embodiments of the invention are within the scope of the invention without making creative efforts.
The invention relates to a skid-mounted pressure swing adsorption device, as shown in figures 1 and 2, comprising: the adsorption device comprises an adsorption mechanism 10, a driving mechanism 20, a buffer mechanism 30 and a control device, wherein the control device comprises a programmable logic controller, a frequency converter is electrically connected to the programmable logic controller, and the output end of the frequency converter is electrically connected with a driving motor 232.
The adsorption mechanism 10 is provided with a plurality of groups, as shown in fig. 3, and includes a first base 11, a plurality of adsorption towers 12 are fixedly installed on the first base 11 in parallel, and the upper and lower ends of the adsorption towers 12 are respectively communicated with a top opening 13 and a bottom opening 14. An upper fixed disk 15 is fixedly installed at the lower end of the adsorption tower 12, as shown in fig. 4, a lower fixed disk 17 fixedly installed with the first base 11 is arranged right below the upper fixed disk 15, a semi-arc support plate 16 fixedly connected with the upper fixed disk 15 and the lower fixed disk 17 is arranged between the upper fixed disk 15 and the lower fixed disk 17, and a plurality of support plates 16 are arranged for penetrating through a lower connecting pipe 24. The number of the adsorption towers 12 is set to 12, which are: the adsorption tower comprises a first adsorption tower a, a second adsorption tower b, a third adsorption tower c, a fourth adsorption tower d, a fifth adsorption tower e, a sixth adsorption tower f, a seventh adsorption tower g, an eighth adsorption tower h, a ninth adsorption tower i, a tenth adsorption tower j, an eleventh adsorption tower k and a twelfth adsorption tower l.
As shown in fig. 5, the driving mechanism 20 includes a second base 21 disposed between two sets of first bases 11, an installation seat 22 is fixedly installed at an upper end of the second base 21, and the installation seat 22 is a frame structure welded by square steel for passing through a lower connecting pipe 24 and a lower header pipe 25. The rotary valve 23 is fixedly installed on the installation seat 22, the rotary valve 23 comprises an upper valve 233 and a lower valve 231 which are respectively arranged at the upper end and the lower end, a driving motor 232 which is electrically connected with the control device is arranged between the upper valve 233 and the lower valve 231, a speed reducer is arranged on a rotating shaft of the driving motor 232, and an output rotating shaft of the speed reducer is respectively and coaxially and fixedly connected with valve rods of the upper valve 233 and the lower valve 231. The lower valve 231 is provided with a lower connecting pipe 24 and a lower header pipe 25 in a communicating manner, the lower header pipe 25 is arranged in the center of the lower valve 231, a plurality of lower connecting pipes 24 are arranged in a circular array with the lower header pipe 25 as a circle center and are respectively communicated with the bottom ports 14 arranged on the adsorption towers 12, the lower header pipe 25 is provided with a three-way valve 26 in a communicating manner, and the three-way valve 26 is an L-shaped self-control three-way valve and is electrically connected with a programmable logic controller of the control device. The upper valve 233 is provided with an upper connecting pipe 27 and an upper header pipe 28 in a communicating manner, the upper header pipe 28 is arranged in the center of the upper valve 233, and the upper connecting pipe 27 is provided with a plurality of upper header pipes 28 in a circular array with a circle center as a circle center and is respectively communicated with top openings 13 arranged on the plurality of adsorption towers 12. The number of the lower connecting pipes 24 and the upper connecting pipes 27 arranged on the rotary valve 23 is 12.
As shown in fig. 6, the buffer mechanism 30 includes a third base 31 disposed on one side of the first base 11 and the second base 21, a product gas buffer tank 32, a product gas buffer tank 33, and an analysis gas buffer tank 34 are fixedly mounted on the third base 31 in parallel, a product gas port 35 communicated with the upper main pipe 28 is disposed on the product gas buffer tank 32, a product gas port 36 and an analysis gas port 37 are disposed on the product gas buffer tank 33 and the analysis gas buffer tank 34, respectively, and the product gas port 36 and the analysis gas port 37 are communicated with the three-way valve 26, respectively.
The first base 11, the second base 21 and the third base 31 are of frame-shaped structures welded by I-shaped steel materials and are fixedly connected with one another in a fixing mode that: welding and/or screwing. The upper ends of the adsorption tower 12, the finished product gas buffer tank 32, the product gas buffer tank 33 and the analysis gas buffer tank 34 are communicated and provided with pressure release valves, the exhaust ends of the pressure release valves are gathered and communicated and provided with gas bags, and the outlets of the gas bags and the analysis gas buffer tank 34 are communicated with torch equipment.
With reference to the specific structure of the skid-mounted pressure swing adsorption apparatus of the above embodiment, a pressure swing adsorption method will be further described below:
the control device controls the operation of the frequency converter through the programmable logic controller, so that the driving motor 232 rotates to sequentially drive the speed reducer, the valve rod of the upper valve 233 and the valve rod of the lower valve 231 to coaxially and synchronously rotate, and in the process of rotating for one circle, 12 adsorption towers 12 sequentially complete an adsorption process, an uniform lifting/uniform lowering process and an analysis process;
the 12 adsorption towers 12 are respectively communicated with an upper main pipe 28 and other adsorption towers 12 through upper connecting pipes 27 communicated with the top openings 13 of the adsorption towers respectively through upper valves 233; the 12 adsorption towers 12 are respectively communicated with a lower main pipe 25 through lower valves 231 by lower connecting pipes 24 communicated with the bottom openings 14 of the adsorption towers;
A. the control device controls the three-way valve 26 through a programmable logic controller to enable the product air port 36 to be communicated with the lower header pipe 25, and carries out an adsorption process and an equal ascending/descending process through the following steps:
a1, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 0 ° position:
the upper valve 233 connects the top ports 13 of the first adsorption tower a, the second adsorption tower b and the third adsorption tower c to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the twelfth adsorption tower l through an upper connecting pipe 27;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the eleventh adsorption tower k through an upper connecting pipe 27;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the tenth adsorption tower j through an upper connecting pipe 27;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27;
the top opening 13 of the eighth adsorption tower h is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the first adsorption tower a, the second adsorption tower b and the third adsorption tower c with the lower header pipe 25 through the lower connecting pipe 24;
bottom openings 14 of a fourth adsorption tower d, a fifth adsorption tower e, a sixth adsorption tower f, a seventh adsorption tower g, an eighth adsorption tower h, a ninth adsorption tower i, a tenth adsorption tower j, an eleventh adsorption tower k and a twelfth adsorption tower l are in a closed state;
at this time, the gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24, is adsorbed in the first adsorption tower a, the second adsorption tower b and the third adsorption tower c, and then sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the finished product gas port 35, and is introduced into the finished product gas buffer tank 32;
a2, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the position of 30 °:
the upper valve 233 connects the top ports 13 of the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d with the upper header pipe 28 through the upper connecting pipe 27;
top opening 13 of fifth adsorption tower e top opening 13 of first adsorption tower a is communicated through upper connecting pipe 27, first pressure reduction is carried out on first adsorption tower a, and pressure increase is carried out on fifth adsorption tower e;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the twelfth adsorption tower l through an upper connecting pipe 27;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the eleventh adsorption tower k through an upper connecting pipe 27;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the tenth adsorption tower j through an upper connecting pipe 27;
the top opening 13 of the ninth adsorption tower i is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l and the first adsorption tower a are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24 in sequence, is adsorbed in the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d, passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the finished product gas port 35 in sequence, and is introduced into the finished product gas buffer tank 32;
a3, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the 60 ° position:
the upper valve 233 connects the top ports 13 of the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs first pressure reduction, and the sixth adsorption tower f performs pressure increase;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs secondary pressure reduction, and the seventh adsorption tower g performs pressure increase;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the twelfth adsorption tower l through an upper connecting pipe 27;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the eleventh adsorption tower k through an upper connecting pipe 27;
the top port 13 of the tenth adsorption column j is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l, the first adsorption tower a and the second adsorption tower b are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24 in sequence, is adsorbed in the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e, passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the product gas port 35 in sequence, and is introduced into the product gas buffer tank 32;
a4, when the driving motor 232 rotates to rotate the valve rods of the upper valve 233 and the lower valve 231 to the 90 ° positions:
the upper valve 233 connects the top ports 13 of the fourth adsorption tower d, the fifth adsorption tower e and the sixth adsorption tower f with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs first pressure reduction, and the seventh adsorption tower g performs pressure increase;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b reduces the pressure for the second time, and the eighth adsorption tower h increases the pressure;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs third pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the tenth adsorption tower j is communicated with the top opening 13 of the twelfth adsorption tower l through an upper connecting pipe 27;
the eleventh adsorption column k is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the fourth adsorption tower d, the fifth adsorption tower e and the sixth adsorption tower f with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l, the first adsorption tower a, the second adsorption tower b and the third adsorption tower c are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header 25, the lower valve 231, the lower connecting pipe 24, the fourth adsorption tower d, the fifth adsorption tower e, and the sixth adsorption tower f in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header 28, the product gas port 35 in sequence, and then enters the product gas buffer tank 32;
a5, when the driving motor 232 rotates to rotate the valve rods of the upper valve 233 and the lower valve 231 to the 120 ° position:
the upper valve 233 connects the top ports 13 of the fifth adsorption tower e, the sixth adsorption tower f and the seventh adsorption tower g with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d performs first pressure reduction, and the eighth adsorption tower h performs pressure increase;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs secondary pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the tenth adsorption tower j is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs third pressure reduction, and the tenth adsorption tower j performs pressure increase;
the top opening 13 of the eleventh adsorption tower k is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs fourth pressure reduction, and the eleventh adsorption tower k performs pressure increase;
the twelfth adsorption tower l is in a closed state;
the lower valve 231 communicates the bottom openings 14 of the fifth adsorption tower e, the sixth adsorption tower f and the seventh adsorption tower g with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the eighth adsorption tower h, the ninth adsorption tower i, the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24 in sequence, is adsorbed in the fifth adsorption tower e, the sixth adsorption tower f and the seventh adsorption tower g, passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the product gas port 35 in sequence, and is transferred into the product gas buffer tank 32;
a6, when the driving motor 232 rotates to rotate the valve rods of the upper valve 233 and the lower valve 231 to the position of 150 °:
the upper valve 233 connects the top ports 13 of the sixth adsorption tower f, the seventh adsorption tower g and the eighth adsorption tower h with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs first pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the tenth adsorption tower j is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d performs secondary pressure reduction, and the tenth adsorption tower j performs pressure increase;
a top opening 13 of the eleventh adsorption tower k is communicated with a top opening 13 of a third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs third pressure reduction, and the eleventh adsorption tower k performs pressure increase;
the top opening 13 of the twelfth adsorption tower l is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs fourth pressure reduction, and the twelfth adsorption tower l performs pressure increase;
the first adsorption tower a is in a closed state;
the lower valve 231 communicates the bottom openings 14 of the sixth adsorption tower f, the seventh adsorption tower g and the eighth adsorption tower h with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the ninth adsorption tower i, the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24 in sequence, is adsorbed in the sixth adsorption tower f, the seventh adsorption tower g and the eighth adsorption tower h, then passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the finished product gas port 35 in sequence, and is transported into the finished product gas buffer tank 32;
a7, when the driving motor 232 rotates to rotate the valve rods of the upper valve 233 and the lower valve 231 to the position of 180 °:
the upper valve 233 connects the top ports 13 of the seventh adsorption tower g, the eighth adsorption tower h and the ninth adsorption tower i with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the tenth adsorption tower j is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs first pressure reduction, and the tenth adsorption tower j performs pressure increase;
the top opening 13 of the eleventh adsorption tower k is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs secondary pressure reduction, and the eleventh adsorption tower k performs pressure increase;
the top opening 13 of the twelfth adsorption tower l is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d carries out third pressure reduction and the twelfth adsorption tower l carries out pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c carries out fourth pressure reduction, and the first adsorption tower a carries out first pressure increase;
the lower valve 231 communicates the bottom openings 14 of the seventh adsorption tower g, the eighth adsorption tower h and the ninth adsorption tower i with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the tenth adsorption tower j, the eleventh adsorption tower k, the twelfth adsorption tower l, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e and the sixth adsorption tower f are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header 25, the lower valve 231, the lower connecting pipe 24, the seventh adsorption tower g, the eighth adsorption tower h, and the ninth adsorption tower i in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header 28, the product gas port 35 in sequence, and then enters the product gas buffer tank 32;
a8, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the position of 210 °:
the upper valve 233 connects the top ports 13 of the eighth adsorption tower h, the ninth adsorption tower i and the tenth adsorption tower j with the upper header pipe 28 through the upper connecting pipe 27;
a top opening 13 of the eleventh adsorption tower k is communicated with a top opening 13 of a seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g performs first pressure reduction, and the eleventh adsorption tower k performs pressure increase;
the top opening 13 of the twelfth adsorption tower l is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs secondary pressure reduction, and the twelfth adsorption tower l performs pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e carries out third pressure reduction, and the first adsorption tower a carries out second pressure increase
The top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d carries out fourth pressure reduction, and the second adsorption tower b carries out first pressure increase;
the third adsorption tower c is in a closed state;
the lower valve 231 communicates the bottom openings 14 of the eighth adsorption tower h, the ninth adsorption tower i and the tenth adsorption tower j with the lower header pipe 25 through the lower connecting pipe 24;
bottom openings 14 of an eleventh adsorption tower k, a twelfth adsorption tower l, a first adsorption tower a, a second adsorption tower b, a third adsorption tower c, a fourth adsorption tower d, a fifth adsorption tower e, a sixth adsorption tower f and a seventh adsorption tower g are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231 and the lower connecting pipe 24 in sequence, is adsorbed in the eighth adsorption tower h, the ninth adsorption tower i and the tenth adsorption tower j, passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28 and the product gas port 35 in sequence, and is transferred into the product gas buffer tank 32;
a9, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the position of 240 °:
the upper valve 233 connects the top ports 13 of the ninth adsorption tower i, the tenth adsorption tower j and the eleventh adsorption tower k to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the twelfth adsorption tower l is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27, the eighth adsorption tower h performs first pressure reduction, and the twelfth adsorption tower l performs pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g performs pressure reduction for the second time, and the first adsorption tower a performs pressure increase for the third time;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs third pressure reduction, and the second adsorption tower b performs second pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs fourth pressure reduction, and the third adsorption tower c performs first pressure increase;
the fourth adsorption tower d is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the ninth adsorption tower i, the tenth adsorption tower j and the eleventh adsorption tower k with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the twelfth adsorption tower l, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g and the eighth adsorption tower h are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header 25, the lower valve 231, the lower connecting pipe 24, to the ninth adsorption tower i, the tenth adsorption tower j, and the eleventh adsorption tower k in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header 28, the product gas port 35 in sequence, to the product gas buffer tank 32;
a10, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the 270 ° position:
the upper valve 233 connects the top ports 13 of the tenth adsorption tower j, the eleventh adsorption tower k and the twelfth adsorption tower l to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27, the ninth adsorption tower i carries out first pressure reduction, and the first adsorption tower a carries out fourth pressure increase;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27, the eighth adsorption tower h performs second pressure reduction, and the second adsorption tower b performs third pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g performs third pressure reduction, and the third adsorption tower c performs second pressure increase;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs fourth pressure reduction, and the fourth adsorption tower d performs first pressure increase;
the fifth adsorption tower e is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the tenth adsorption tower j, the eleventh adsorption tower k and the twelfth adsorption tower l with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h and the ninth adsorption tower i are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231, the lower connecting pipe 24, the tenth adsorption tower j, the eleventh adsorption tower k, and the twelfth adsorption tower l in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28, the product gas port 35 in sequence, and then enters the product gas buffer tank 32;
a11, when the driving motor 232 rotates and the valve rods of the upper valve 233 and the lower valve 231 rotate to the position of 300 °:
the upper valve 233 connects the top ports 13 of the eleventh adsorption column k, the twelfth adsorption column l and the first adsorption column a to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of a tenth adsorption tower j through an upper connecting pipe 27, the tenth adsorption tower j performs first pressure reduction, and the second adsorption tower b performs fourth pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27, the ninth adsorption tower i performs pressure reduction for the second time, and the third adsorption tower c performs pressure increase for the third time;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27, the eighth adsorption tower h performs third pressure reduction, and the fourth adsorption tower d performs second pressure increase;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g performs fourth pressure reduction, and the fifth adsorption tower e performs first pressure increase;
the sixth adsorption tower f is in a closed state;
the lower valve 231 connects the bottom ports 14 of the eleventh adsorption tower k, the twelfth adsorption tower l and the first adsorption tower a to the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i and the tenth adsorption tower j are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231, the lower connecting pipe 24, the eleventh adsorption tower k, the twelfth adsorption tower l, and the first adsorption tower a in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28, the product gas port 35 in sequence, and then enters the product gas buffer tank 32;
a12, when the driving motor 232 rotates to rotate the valve rods of the upper valve 233 and the lower valve 231 to the position of 330 °:
the upper valve 233 connects the top ports 13 of the twelfth adsorption tower l, the first adsorption tower a and the second adsorption tower b to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the eleventh adsorption tower k through an upper connecting pipe 27, the eleventh adsorption tower k performs first pressure reduction, and the third adsorption tower c performs fourth pressure increase;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the tenth adsorption tower j through an upper connecting pipe 27, the tenth adsorption tower j performs second pressure reduction, and the fourth adsorption tower d performs third pressure increase;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27, the ninth adsorption tower i carries out third pressure reduction, and the fifth adsorption tower e carries out second pressure increase;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27, the eighth adsorption tower h carries out fourth pressure reduction, and the sixth adsorption tower f carries out first pressure increase;
the seventh adsorption tower g is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the twelfth adsorption tower l, the first adsorption tower a and the second adsorption tower b with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the tenth adsorption tower j and the eleventh adsorption tower k are in a closed state;
at this time, the gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower header pipe 25, the lower valve 231, the lower connecting pipe 24, the twelfth adsorption tower l, the first adsorption tower a, and the second adsorption tower b in sequence for adsorption, and then passes through the upper connecting pipe 27, the upper valve 233, the upper header pipe 28, the product gas port 35 in sequence, and then enters the product gas buffer tank 32;
B. the control device controls the three-way valve 26 through the programmable logic controller to enable the analysis air port 37 to be communicated with the lower header pipe 25, and simultaneously, the programmable logic controller controls the frequency converter to adjust the driving motor 232 to rotate rapidly to enable the valve rods of the upper valve 233 and the lower valve 231 to rotate, and in the process of performing analysis procedures through the following steps:
the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24, and simultaneously, the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24;
the high pressure in the product gas buffer tank 32 and the low pressure in the desorption gas buffer tank 34 have a pressure difference;
the product gas in the product gas buffer tank 32 sequentially passes through the product gas port 35, the upper header pipe 28, the upper valve 233 and the upper connecting pipe 27, and is desorbed in the adsorption tower 12, and the desorption gas sequentially passes through the lower connecting pipe 24, the lower valve 231, the lower header pipe 25, the three-way valve 26 and the desorption gas port 37, and reaches the desorption gas buffer tank 34.
The adsorption method of the pressure swing adsorption apparatus provided with the six-channel rotary valve and the nine-channel rotary valve according to the pressure swing adsorption method of the above embodiment, in combination with the rotary valves of the plurality of channels and the demand for the industrial gas in the actual production, will be further described below:
as shown in fig. 7 and 8, the pressure swing adsorption apparatus based on a six-channel rotary valve comprises:
the control device controls the operation of the frequency converter through the programmable logic controller, so that the driving motor 232 rotates to sequentially drive the speed reducer, the valve rod of the upper valve 233 and the valve rod of the lower valve 231 to coaxially and synchronously rotate, and in the process of rotating for one circle, 6 adsorption towers 12 sequentially complete an adsorption process, an uniform lifting/uniform lowering process and an analysis process;
6 adsorption towers 12, including a first adsorption tower a, a second adsorption tower b, a third adsorption tower c, a fourth adsorption tower d, a fifth adsorption tower e and a sixth adsorption tower f, which are respectively communicated with an upper header pipe 28 and other adsorption towers 12 through upper valves 233 by upper connecting pipes 27 communicated with top openings 13 of the adsorption towers; the 6 adsorption towers 12 are respectively communicated with a lower main pipe 25 through lower valves 231 by lower connecting pipes 24 communicated with the bottom openings 14 of the adsorption towers;
A. the control device controls the three-way valve 26 through a programmable logic controller to enable the product air port 36 to be communicated with the lower header pipe 25, and carries out an adsorption process and an equal ascending/descending process through the following steps:
a1, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 0 ° position:
the upper valve 233 connects the top ports 13 of the first adsorption tower a and the second adsorption tower b to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27;
the lower valve 231 connects the bottom ports 14 of the first adsorption tower a and the second adsorption tower b with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e and the sixth adsorption tower f are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, and is adsorbed in the first adsorption tower a and the second adsorption tower b to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is then transferred into the product gas buffer tank 32;
a2, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 60 ° position:
the upper valve 233 connects the top ports 13 of the second adsorption tower b and the third adsorption tower c with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs first pressure reduction, and the fourth adsorption tower d performs pressure increase;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27;
the lower valve 231 communicates the bottom ports 14 of the second adsorption tower b and the third adsorption tower c with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f and the first adsorption tower a are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, is adsorbed in the second adsorption tower b and the third adsorption tower c to generate the product gas, and then sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is introduced into the product gas buffer tank 32;
a3, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the position of 120 degrees:
the upper valve 233 connects the top ports 13 of the third adsorption tower c and the fourth adsorption tower d with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs first pressure reduction, and the fifth adsorption tower e performs pressure increase;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs secondary pressure reduction, and the sixth adsorption tower f performs pressure increase;
the lower valve 231 communicates the bottom ports 14 of the third adsorption tower c and the fourth adsorption tower d with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the fifth adsorption tower e, the sixth adsorption tower f, the first adsorption tower a and the second adsorption tower b are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, is adsorbed in the third adsorption tower c and the fourth adsorption tower d to generate the product gas, and then sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is introduced into the product gas buffer tank 32;
a4, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the 180-degree position:
the upper valve 233 connects the top ports 13 of the fourth adsorption tower d and the fifth adsorption tower e with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs first pressure reduction, and the sixth adsorption tower f performs pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs second pressure reduction, and the first adsorption tower a performs first pressure increase;
the lower valve 231 communicates the bottom ports 14 of the fourth adsorption tower d and the fifth adsorption tower e with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the sixth adsorption tower f, the first adsorption tower a, the second adsorption tower b and the third adsorption tower c are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, the fourth adsorption tower d and the fifth adsorption tower e in sequence to be adsorbed to generate the product gas, and the product gas passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35 in sequence to enter the product gas buffer tank 32;
a5, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the 240 ° position:
the upper valve 233 connects the top ports 13 of the fifth adsorption tower e and the sixth adsorption tower f with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d carries out first pressure reduction, and the first adsorption tower a carries out second pressure increase;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs second pressure reduction, and the second adsorption tower b performs first pressure increase;
the lower valve 231 communicates the bottom ports 14 of the fifth adsorption tower e and the sixth adsorption tower f with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the first adsorption tower a, the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, and is adsorbed in the fifth adsorption tower e and the sixth adsorption tower f to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, and the product gas port 35, and is then transferred into the product gas buffer tank 32;
a6, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the position of 300 degrees:
the upper valve 233 connects the top ports 13 of the sixth adsorption tower f and the first adsorption tower a to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs first pressure reduction, and the second adsorption tower b performs second pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d performs second pressure reduction, and the third adsorption tower c performs first pressure increase;
the lower valve 231 connects the bottom ports 14 of the sixth adsorption tower f and the first adsorption tower a to the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, and then is adsorbed in the sixth adsorption tower f and the first adsorption tower a to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, and the product gas port 35, and then is transferred into the product gas buffer tank 32;
B. the control device controls the three-way valve 26 through the programmable logic controller to enable the analysis air port 37 to be communicated with the lower header pipe 25, and simultaneously, the programmable logic controller controls the frequency converter to adjust the driving motor 232 to rotate rapidly to enable the valve rods of the upper valve 233 and the lower valve 231 to rotate, and in the process of performing analysis procedures through the following steps:
the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24, and simultaneously, the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24;
the high pressure in the product gas buffer tank 32 and the low pressure in the desorption gas buffer tank 34 have a pressure difference;
the product gas in the product gas buffer tank 32 sequentially passes through the product gas port 35, the upper header pipe 28, the upper valve 233 and the upper connecting pipe 27, and is desorbed in the adsorption tower 12, and the desorption gas sequentially passes through the lower connecting pipe 24, the lower valve 231, the lower header pipe 25, the three-way valve 26 and the desorption gas port 37, and reaches the desorption gas buffer tank 34.
As shown in fig. 9 and 10, the pressure swing adsorption apparatus based on a nine-channel rotary valve includes:
the control device controls the operation of the frequency converter through the programmable logic controller, so that the driving motor 232 rotates to sequentially drive the speed reducer, the valve rod of the upper valve 233 and the valve rod of the lower valve 231 to coaxially and synchronously rotate, and in the process of rotating for one circle, 9 adsorption towers 12 sequentially complete an adsorption process, an uniform lifting/uniform lowering process and an analysis process;
9 adsorption towers 12, including a first adsorption tower a, a second adsorption tower b, a third adsorption tower c, a fourth adsorption tower d, a fifth adsorption tower e, a sixth adsorption tower f, a seventh adsorption tower g, an eighth adsorption tower h and a ninth adsorption tower i, which are respectively communicated with the upper main pipe 28 and other adsorption towers 12 through upper valves 233 by upper connecting pipes 27 communicated with the top openings 13; the 9 adsorption towers 12 are respectively communicated with a lower main pipe 25 through lower valves 231 by lower connecting pipes 24 communicated with the bottom openings 14 of the adsorption towers;
A. the control device controls the three-way valve 26 through a programmable logic controller to enable the product air port 36 to be communicated with the lower header pipe 25, and carries out an adsorption process and an equal ascending/descending process through the following steps:
a1, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 0 ° position:
the upper valve 233 connects the top ports 13 of the first adsorption tower a and the second adsorption tower b to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27;
the top port 13 of the sixth adsorption tower f is in a closed state;
the lower valve 231 connects the bottom ports 14 of the first adsorption tower a and the second adsorption tower b with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h and the ninth adsorption tower i are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, and is adsorbed in the first adsorption tower a and the second adsorption tower b to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is then transferred into the product gas buffer tank 32;
a2, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 40 ° position:
the upper valve 233 connects the top ports 13 of the second adsorption tower b and the third adsorption tower c with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs first pressure reduction, and the fourth adsorption tower d performs pressure increase;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27;
the top port 13 of the seventh adsorption tower g is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the second adsorption tower b and the third adsorption tower c with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i and the first adsorption tower a are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, is adsorbed in the second adsorption tower b and the third adsorption tower c to generate the product gas, and then sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is introduced into the product gas buffer tank 32;
a3, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the position of 80 degrees:
the upper valve 233 connects the top ports 13 of the third adsorption tower c and the fourth adsorption tower d with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the fifth adsorption tower e is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs first pressure reduction, and the fifth adsorption tower e performs pressure increase;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs secondary pressure reduction, and the sixth adsorption tower f performs pressure increase;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the ninth adsorption tower i through an upper connecting pipe 27;
the top opening 13 of the eighth adsorption tower h is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the third adsorption tower c and the fourth adsorption tower d with the lower header pipe 25 through the lower connecting pipe 24;
bottom openings 14 of a fifth adsorption tower e, a sixth adsorption tower f, a seventh adsorption tower g, an eighth adsorption tower h, a ninth adsorption tower i, a first adsorption tower a and a second adsorption tower b are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231 and the lower connecting pipe 24, is adsorbed in the third adsorption tower c and the fourth adsorption tower d to generate the product gas, and then sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35, and is introduced into the product gas buffer tank 32;
a4, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the position of 120 degrees:
the upper valve 233 connects the top ports 13 of the fourth adsorption tower d and the fifth adsorption tower e with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the sixth adsorption tower f is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs first pressure reduction, and the sixth adsorption tower f performs pressure increase;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs secondary pressure reduction, and the seventh adsorption tower g performs pressure increase;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the first adsorption tower a through an upper connecting pipe 27, the first adsorption tower a performs third pressure reduction, and the eighth adsorption tower h performs pressure increase;
the top opening 13 of the ninth adsorption tower i is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the fourth adsorption tower d and the fifth adsorption tower e with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the sixth adsorption tower f, the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the first adsorption tower a, the second adsorption tower b and the third adsorption tower c are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, the fourth adsorption tower d and the fifth adsorption tower e in sequence to be adsorbed to generate the product gas, and the product gas passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35 in sequence to enter the product gas buffer tank 32;
a5, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the 160 ° position:
the upper valve 233 connects the top ports 13 of the fifth adsorption tower e and the sixth adsorption tower f with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the seventh adsorption tower g is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d carries out first pressure reduction, and the seventh adsorption tower g carries out pressure increase;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c performs secondary pressure reduction, and the eighth adsorption tower h performs pressure increase;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the second adsorption tower b through an upper connecting pipe 27, the second adsorption tower b performs third pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the first adsorption tower a is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the fifth adsorption tower e and the sixth adsorption tower f with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the seventh adsorption tower g, the eighth adsorption tower h, the ninth adsorption tower i, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c and the fourth adsorption tower d are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, and is adsorbed in the fifth adsorption tower e and the sixth adsorption tower f to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, and the product gas port 35, and is then transferred into the product gas buffer tank 32;
a6, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the 200 ° position:
the upper valve 233 connects the top ports 13 of the sixth adsorption tower f and the seventh adsorption tower g with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the eighth adsorption tower h is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs first pressure reduction, and the eighth adsorption tower h performs pressure increase;
the top opening 13 of the ninth adsorption tower i is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the fourth adsorption tower d performs secondary pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the third adsorption tower c through an upper connecting pipe 27, the third adsorption tower c carries out third pressure reduction, and the first adsorption tower a carries out first pressure increase;
the top opening 13 of the second adsorption tower b is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the sixth adsorption tower f and the seventh adsorption tower g with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the eighth adsorption tower h, the ninth adsorption tower i, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d and the fifth adsorption tower e are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, and is adsorbed in the sixth adsorption tower f and the seventh adsorption tower g to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, and the product gas port 35, and is then transferred into the product gas buffer tank 32;
a7, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the 240 ° position:
the upper valve 233 connects the top ports 13 of the seventh adsorption tower g and the eighth adsorption tower h with the upper header pipe 28 through the upper connecting pipe 27;
top opening 13 of the ninth adsorption tower i the top opening 13 of the sixth adsorption tower f is communicated through an upper connecting pipe 27, the sixth adsorption tower f performs first pressure reduction, and the ninth adsorption tower i performs pressure increase;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e carries out secondary pressure reduction, and the first adsorption tower a carries out secondary pressure increase;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the fourth adsorption tower d through an upper connecting pipe 27, the third pressure reduction is carried out on the fourth adsorption tower d, and the first pressure increase is carried out on the second adsorption tower b;
the top opening 13 of the third adsorption tower c is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the seventh adsorption tower g and the eighth adsorption tower h with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the ninth adsorption tower i, the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e and the sixth adsorption tower f are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, to the seventh adsorption tower g and the eighth adsorption tower h for adsorption to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, the product gas port 35, and then enters the product gas buffer tank 32;
a8, when the driving motor 232 rotates to make the valve rods of the upper valve 233 and the lower valve 231 in the position of 280 degrees:
the upper valve 233 connects the top ports 13 of the eighth adsorption tower h and the ninth adsorption tower i with the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the first adsorption tower a is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g carries out first pressure reduction, and the first adsorption tower a carries out third pressure increase;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs second pressure reduction, and the second adsorption tower b performs second pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the fifth adsorption tower e through an upper connecting pipe 27, the fifth adsorption tower e performs third pressure reduction, and the third adsorption tower c performs first pressure increase;
the top opening 13 of the fourth adsorption tower d is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the eighth adsorption tower h and the ninth adsorption tower i with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the first adsorption tower a, the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f and the seventh adsorption tower g are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, the eighth adsorption tower h and the ninth adsorption tower i to be adsorbed to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28 and the product gas port 35 to enter the product gas buffer tank 32;
a9, the driving motor 232 rotates, and the valve rods of the upper valve 233 and the lower valve 231 are in the 320 ° position:
the upper valve 233 connects the top ports 13 of the ninth adsorption tower i and the first adsorption tower a to the upper header pipe 28 through the upper connecting pipe 27;
the top opening 13 of the second adsorption tower b is communicated with the top opening 13 of the eighth adsorption tower h through an upper connecting pipe 27, the eighth adsorption tower h performs first pressure reduction, and the second adsorption tower b performs third pressure increase;
the top opening 13 of the third adsorption tower c is communicated with the top opening 13 of the seventh adsorption tower g through an upper connecting pipe 27, the seventh adsorption tower g performs second pressure reduction, and the third adsorption tower c performs second pressure increase;
the top opening 13 of the fourth adsorption tower d is communicated with the top opening 13 of the sixth adsorption tower f through an upper connecting pipe 27, the sixth adsorption tower f performs third pressure reduction, and the fourth adsorption tower d performs first pressure increase;
the top opening 13 of the fifth adsorption tower e is in a closed state;
the lower valve 231 communicates the bottom ports 14 of the ninth adsorption tower i and the first adsorption tower a with the lower header pipe 25 through the lower connecting pipe 24;
the bottom openings 14 of the second adsorption tower b, the third adsorption tower c, the fourth adsorption tower d, the fifth adsorption tower e, the sixth adsorption tower f, the seventh adsorption tower g and the eighth adsorption tower h are all in a closed state;
at this time, the product gas in the product gas buffer tank 33 sequentially passes through the product gas port 36, the three-way valve 26, the lower main pipe 25, the lower valve 231, the lower connecting pipe 24, to the ninth adsorption tower i and the first adsorption tower a for adsorption to generate the product gas, and the product gas sequentially passes through the upper connecting pipe 27, the upper valve 233, the upper main pipe 28, the product gas port 35, and then to the product gas buffer tank 32;
B. the control device controls the three-way valve 26 through the programmable logic controller to enable the analysis air port 37 to be communicated with the lower header pipe 25, and simultaneously, the programmable logic controller controls the frequency converter to adjust the driving motor 232 to rotate rapidly to enable the valve rods of the upper valve 233 and the lower valve 231 to rotate, and in the process of performing analysis procedures through the following steps:
the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24, and simultaneously, the lower valve 231 communicates the bottom ports 14 of the adjacent three adsorption towers 12 with the lower header pipe 25 through the lower connecting pipe 24;
the high pressure in the product gas buffer tank 32 and the low pressure in the desorption gas buffer tank 34 have a pressure difference;
the product gas in the product gas buffer tank 32 sequentially passes through the product gas port 35, the upper header pipe 28, the upper valve 233 and the upper connecting pipe 27, and is desorbed in the adsorption tower 12, and the desorption gas sequentially passes through the lower connecting pipe 24, the lower valve 231, the lower header pipe 25, the three-way valve 26 and the desorption gas port 37, and reaches the desorption gas buffer tank 34.
Based on the above, it is obvious that the skid-mounted pressure swing adsorption apparatus of the present invention can be modified and modified by the worker in the light of the above description without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a sled dress pressure swing adsorption device which characterized in that:
the device comprises an adsorption mechanism (10), a driving mechanism (20) and a buffer mechanism (30), and is characterized in that:
the adsorption mechanism (10) is provided with a plurality of groups, and comprises a first base (11), a plurality of adsorption towers (12) are fixedly arranged on the first base (11) in parallel, the upper end and the lower end of each adsorption tower (12) are respectively communicated with a top opening (13) and a bottom opening (14),
the driving mechanism (20) comprises a second base (21) arranged between two groups of first bases (11), the upper end of the second base (21) is fixedly provided with a mounting seat (22), the mounting seat (22) is fixedly provided with a rotary valve (23), the rotary valve (23) comprises an upper valve (233) and a lower valve (231) which are respectively arranged at the upper end and the lower end, a driving motor (232) is arranged between the upper valve (233) and the lower valve (231), the driving motor (232) is electrically connected with a control device, the lower valve (231) is communicated with a lower connecting pipe (24) and a lower header pipe (25), the lower header pipe (25) is arranged in the center of the lower valve (231), a plurality of lower header pipes (24) are arranged below the header pipe (25) as a circle center circular array and are respectively communicated with bottom ports (14) arranged on the adsorption towers (12), the lower main pipe (25) is communicated with a three-way valve (26), the upper valve (233) is communicated with an upper connecting pipe (27) and an upper main pipe (28), the upper main pipe (28) is arranged in the center of the upper valve (233), the upper connecting pipe (27) is provided with a plurality of upper main pipes (28) which are circular arrays with circle centers and are respectively communicated with top openings (13) arranged on the adsorption towers (12),
buffer gear (30) are including setting up in third base (31) of first base (11), second base (21) one side, parallel fixed mounting is provided with finished product gas buffer tank (32), product gas buffer tank (33), analysis gas buffer tank (34) on third base (31), be provided with on finished product gas buffer tank (32) finished product gas port (35) that are linked together with last house steward (28), be provided with product gas port (36), analysis gas port (37) on product gas buffer tank (33), the analysis gas buffer tank (34) respectively, product gas port (36), analysis gas port (37) are linked together with three-way valve (26) respectively.
2. The skid-mounted pressure swing adsorption apparatus of claim 1, wherein:
first base (11), second base (21), third base (31) set up to be by "worker" style of calligraphy steel welded frame type structure to three fixed connection, its fixed mode is: welding and/or screwing.
3. The skid-mounted pressure swing adsorption apparatus of claim 1, wherein:
the mounting seat (22) is a frame structure welded by square steel and used for penetrating the lower connecting pipe (24) and the lower header pipe (25).
4. The skid-mounted pressure swing adsorption apparatus of claim 1, wherein:
the upper end intercommunication of adsorption tower (12), finished product gas buffer tank (32), product gas buffer tank (33), analysis gas buffer tank (34) is provided with the relief valve, the exhaust end of relief valve assembles the intercommunication and is provided with the gas package, gas package export, analysis gas buffer tank (34) export all are linked together with torch equipment.
5. The skid-mounted pressure swing adsorption apparatus of claim 1, wherein:
the number of the adsorption towers (12) is set to be 12, and the adsorption towers are respectively as follows:
a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k) and a twelfth adsorption tower (l);
the number of the lower connecting pipes (24) and the upper connecting pipes (27) arranged on the rotary valve (23) is 12.
6. The skid-mounted pressure swing adsorption apparatus of claim 5, wherein:
the control device comprises a programmable logic controller, a frequency converter is electrically connected to the programmable logic controller, and the output end of the frequency converter is electrically connected with a driving motor (232).
7. The skid-mounted pressure swing adsorption apparatus of claim 6, wherein:
the three-way valve (26) is set to be an L-shaped automatic control three-way valve and is electrically connected with a programmable logic controller of the control device.
8. The skid-mounted pressure swing adsorption apparatus of claim 7, wherein:
and a speed reducer is arranged on a rotating shaft of the driving motor (232), and an output rotating shaft of the speed reducer is respectively and coaxially and fixedly connected with valve rods of the upper valve (233) and the lower valve (231).
9. The skid-mounted pressure swing adsorption apparatus of claim 8, wherein:
the lower extreme fixed mounting of adsorption tower (12) is provided with upper fixed disk (15), be provided with under upper fixed disk (15) with first base (11) fixed mounting lower fixed disk (17), be provided with respectively between upper fixed disk (15), lower fixed disk (17) with both fixed connection's semicircle arcuation backup pad (16), backup pad (16) are provided with a plurality ofly for wear to establish down connecting pipe (24).
10. A pressure swing adsorption process as claimed in claim 9 wherein:
the control device controls the operation of the frequency converter through the programmable logic controller, so that the driving motor (232) rotates to sequentially drive the speed reducer, the valve rod of the upper valve (233) and the valve rod of the lower valve (231) to coaxially and synchronously rotate, and in the process of rotating for one circle, 12 adsorption towers (12) sequentially complete an adsorption process, an uniform lifting/uniform lowering process and an analysis process;
the 12 adsorption towers (12) are respectively communicated with an upper main pipe (28) and other adsorption towers (12) through upper connecting pipes (27) communicated with top openings (13) of the adsorption towers through upper valves (233); the 12 adsorption towers (12) are respectively communicated with a lower main pipe (25) through lower connecting pipes (24) communicated with bottom openings (14) of the adsorption towers through lower valves (231);
A. the control device controls the three-way valve (26) through a programmable logic controller to enable the product air port (36) to be communicated with the lower main pipe (25), and the adsorption process and the uniform lifting/uniform lowering process are carried out through the following steps:
a1, when the driving motor (232) rotates to make the valve rods of the upper valve (233) and the lower valve (231) in the 0-degree position:
the upper valve (233) connects the top openings (13) of the first adsorption tower (a), the second adsorption tower (b) and the third adsorption tower (c) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the fourth adsorption tower (d) is communicated with the top opening (13) of the twelfth adsorption tower (l) through an upper connecting pipe (27);
the top opening (13) of the fifth adsorption tower (e) is communicated with the top opening (13) of the eleventh adsorption tower (k) through an upper connecting pipe (27);
the top opening (13) of the sixth adsorption tower (f) is communicated with the top opening (13) of the tenth adsorption tower (j) through an upper connecting pipe (27);
the top opening (13) of the seventh adsorption tower (g) is communicated with the top opening (13) of the ninth adsorption tower (i) through an upper connecting pipe (27);
the top opening (13) of the eighth adsorption tower (h) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the first adsorption tower (a), the second adsorption tower (b) and the third adsorption tower (c) with a lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k) and a twelfth adsorption tower (l) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a first adsorption tower (a), a second adsorption tower (b) and a third adsorption tower (c), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a2, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 30 degrees:
the upper valve (233) connects the top openings (13) of the second adsorption tower (b), the third adsorption tower (c) and the fourth adsorption tower (d) with the upper header pipe (28) through the upper connecting pipe (27);
a top opening (13) of the fifth adsorption tower (e) is communicated with a top opening (13) of the first adsorption tower (a) through an upper connecting pipe (27), the first adsorption tower (a) performs first pressure reduction, and the fifth adsorption tower (e) performs pressure increase;
the top opening (13) of the sixth adsorption tower (f) is communicated with the top opening (13) of the twelfth adsorption tower (l) through an upper connecting pipe (27);
the top opening (13) of the seventh adsorption tower (g) is communicated with the top opening (13) of the eleventh adsorption tower (k) through an upper connecting pipe (27);
the top opening (13) of the eighth adsorption tower (h) is communicated with the top opening (13) of the tenth adsorption tower (j) through an upper connecting pipe (27);
the top opening (13) of the ninth adsorption tower (i) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the second adsorption tower (b), the third adsorption tower (c) and the fourth adsorption tower (d) with a lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l) and the first adsorption tower (a) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a second adsorption tower (b), a third adsorption tower (c) and a fourth adsorption tower (d), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a3, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 60 degrees:
the upper valve (233) connects the top openings (13) of the third adsorption tower (c), the fourth adsorption tower (d) and the fifth adsorption tower (e) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the sixth adsorption tower (f) is communicated with the top opening (13) of the second adsorption tower (b) through an upper connecting pipe (27), the second adsorption tower (b) performs first pressure reduction, and the sixth adsorption tower (f) performs pressure increase;
the top opening (13) of the seventh adsorption tower (g) is communicated with the top opening (13) of the first adsorption tower (a) through an upper connecting pipe (27), the first adsorption tower (a) performs second pressure reduction, and the seventh adsorption tower (g) performs pressure increase;
the top opening (13) of the eighth adsorption tower (h) is communicated with the top opening (13) of the twelfth adsorption tower (l) through an upper connecting pipe (27);
the top opening (13) of the ninth adsorption tower (i) is communicated with the top opening (13) of the eleventh adsorption tower (k) through an upper connecting pipe (27);
the top opening (13) of the tenth adsorption tower (j) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the third adsorption tower (c), the fourth adsorption tower (d) and the fifth adsorption tower (e) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a) and a second adsorption tower (b) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a third adsorption tower (c), a fourth adsorption tower (d) and a fifth adsorption tower (e), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a4, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 90 degrees:
the upper valve (233) connects the top openings (13) of the fourth adsorption tower (d), the fifth adsorption tower (e) and the sixth adsorption tower (f) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the seventh adsorption tower (g) is communicated with the top opening (13) of the third adsorption tower (c) through an upper connecting pipe (27), the third adsorption tower (c) performs first pressure reduction, and the seventh adsorption tower (g) performs pressure increase;
the top opening (13) of the eighth adsorption tower (h) is communicated with the top opening (13) of the second adsorption tower (b) through an upper connecting pipe (27), the second adsorption tower (b) reduces the pressure for the second time, and the eighth adsorption tower (h) increases the pressure;
a top opening (13) of the ninth adsorption tower (i) is communicated with a top opening (13) of the first adsorption tower (a) through an upper connecting pipe (27), the first adsorption tower (a) performs third pressure reduction, and the ninth adsorption tower (i) performs pressure increase;
the top opening (13) of the tenth adsorption tower (j) is communicated with the top opening (13) of the twelfth adsorption tower (l) through an upper connecting pipe (27);
the eleventh adsorption column (k) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the fourth adsorption tower (d), the fifth adsorption tower (e) and the sixth adsorption tower (f) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b) and a third adsorption tower (c) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231), a lower connecting pipe (24), a fourth adsorption tower (d), a fifth adsorption tower (e) and a sixth adsorption tower (f) for adsorption, and sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to enter a finished product gas buffer tank (32);
a5, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 120 degrees:
the upper valve (233) connects the top openings (13) of the fifth adsorption tower (e), the sixth adsorption tower (f) and the seventh adsorption tower (g) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the eighth adsorption tower (h) is communicated with the top opening (13) of the fourth adsorption tower (d) through an upper connecting pipe (27), the fourth adsorption tower (d) performs first pressure reduction, and the eighth adsorption tower (h) performs pressure increase;
the top opening (13) of the ninth adsorption tower (i) is communicated with the top opening (13) of the third adsorption tower (c) through an upper connecting pipe (27), the third adsorption tower (c) performs second pressure reduction, and the ninth adsorption tower (i) performs pressure increase;
a top opening (13) of the tenth adsorption tower (j) is communicated with a top opening (13) of the second adsorption tower (b) through an upper connecting pipe (27), the second adsorption tower (b) performs third pressure reduction, and the tenth adsorption tower (j) performs pressure increase;
a top opening (13) of the eleventh adsorption tower (k) is communicated with a top opening (13) of the first adsorption tower (a) through an upper connecting pipe (27), the first adsorption tower (a) performs fourth pressure reduction, and the eleventh adsorption tower (k) performs pressure increase;
the twelfth adsorption column (l) is in a closed state;
the lower valve (231) connects the bottom openings (14) of the fifth adsorption tower (e), the sixth adsorption tower (f) and the seventh adsorption tower (g) with the lower header pipe (25) through the lower connecting pipe (24);
bottom openings (14) of an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c) and a fourth adsorption tower (d) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a fifth adsorption tower (e), a sixth adsorption tower (f) and a seventh adsorption tower (g), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a6, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 150 degrees:
the upper valve (233) connects the top openings (13) of the sixth adsorption tower (f), the seventh adsorption tower (g) and the eighth adsorption tower (h) with the upper header pipe (28) through the upper connecting pipe (27);
a top opening (13) of the ninth adsorption tower (i) is communicated with a top opening (13) of the fifth adsorption tower (e) through an upper connecting pipe (27), the fifth adsorption tower (e) performs first pressure reduction, and the ninth adsorption tower (i) performs pressure increase;
a top opening (13) of the tenth adsorption tower (j) is communicated with a top opening (13) of the fourth adsorption tower (d) through an upper connecting pipe (27), the fourth adsorption tower (d) performs secondary pressure reduction, and the tenth adsorption tower (j) performs pressure increase;
a top opening (13) of the eleventh adsorption tower (k) is communicated with a top opening (13) of the third adsorption tower (c) through an upper connecting pipe (27), the third adsorption tower (c) performs third pressure reduction, and the eleventh adsorption tower (k) performs pressure increase;
the top opening (13) of the twelfth adsorption tower (l) is communicated with the top opening (13) of the second adsorption tower (b) through an upper connecting pipe (27), the second adsorption tower (b) performs fourth pressure reduction, and the twelfth adsorption tower (l) performs pressure increase;
the first adsorption tower (a) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the sixth adsorption tower (f), the seventh adsorption tower (g) and the eighth adsorption tower (h) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a ninth adsorption tower (i), a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d) and a fifth adsorption tower (e) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a sixth adsorption tower (f), a seventh adsorption tower (g) and an eighth adsorption tower (h), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a7, when the driving motor (232) rotates to rotate the valve rods of the upper valve (233) and the lower valve (231) to the position of 180 degrees:
the upper valve (233) connects the top openings (13) of the seventh adsorption tower (g), the eighth adsorption tower (h) and the ninth adsorption tower (i) with the upper header pipe (28) through the upper connecting pipe (27);
a top opening (13) of the tenth adsorption tower (j) is communicated with a top opening (13) of the sixth adsorption tower (f) through an upper connecting pipe (27), the sixth adsorption tower (f) performs first pressure reduction, and the tenth adsorption tower (j) performs pressure increase;
a top opening (13) of the eleventh adsorption tower (k) is communicated with a top opening (13) of the fifth adsorption tower (e) through an upper connecting pipe (27), the fifth adsorption tower (e) performs secondary pressure reduction, and the eleventh adsorption tower (k) performs pressure increase;
the top opening (13) of the twelfth adsorption tower (l) is communicated with the top opening (13) of the fourth adsorption tower (d) through an upper connecting pipe (27), the fourth adsorption tower (d) is used for carrying out third pressure reduction, and the twelfth adsorption tower (l) is used for carrying out pressure increase;
the top opening (13) of the first adsorption tower (a) is communicated with the top opening (13) of the third adsorption tower (c) through an upper connecting pipe (27), the third adsorption tower (c) performs fourth pressure reduction, and the first adsorption tower (a) performs first pressure increase;
the lower valve (231) is used for communicating the bottom openings (14) of the seventh adsorption tower (g), the eighth adsorption tower (h) and the ninth adsorption tower (i) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a tenth adsorption tower (j), an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e) and a sixth adsorption tower (f) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a seventh adsorption tower (g), an eighth adsorption tower (h) and a ninth adsorption tower (i), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a8, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 210 degrees:
the upper valve (233) connects the top openings (13) of the eighth adsorption tower (h), the ninth adsorption tower (i) and the tenth adsorption tower (j) with the upper header pipe (28) through the upper connecting pipe (27);
a top opening (13) of the eleventh adsorption tower (k) is communicated with a top opening (13) of the seventh adsorption tower (g) through an upper connecting pipe (27), the seventh adsorption tower (g) performs first pressure reduction, and the eleventh adsorption tower (k) performs pressure increase;
the top opening (13) of the twelfth adsorption tower (l) is communicated with the top opening (13) of the sixth adsorption tower (f) through an upper connecting pipe (27), the sixth adsorption tower (f) performs secondary pressure reduction, and the twelfth adsorption tower (l) performs pressure increase;
the top opening (13) of the first adsorption tower (a) is communicated with the top opening (13) of the fifth adsorption tower (e) through an upper connecting pipe (27), the fifth adsorption tower (e) carries out third pressure reduction, and the first adsorption tower (a) carries out second pressure increase
The top opening (13) of the second adsorption tower (b) is communicated with the top opening (13) of the fourth adsorption tower (d) through an upper connecting pipe (27), the fourth adsorption tower (d) performs fourth pressure reduction, and the second adsorption tower (b) performs first pressure increase;
the third adsorption tower (c) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the eighth adsorption tower (h), the ninth adsorption tower (i) and the tenth adsorption tower (j) with a lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of an eleventh adsorption tower (k), a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f) and a seventh adsorption tower (g) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in an eighth adsorption tower (h), a ninth adsorption tower (i) and a tenth adsorption tower (j), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a9, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 240 degrees:
the upper valve (233) connects the top openings (13) of the ninth adsorption tower (i), the tenth adsorption tower (j) and the eleventh adsorption tower (k) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the twelfth adsorption tower (l) is communicated with the top opening (13) of the eighth adsorption tower (h) through an upper connecting pipe (27), the eighth adsorption tower (h) performs first pressure reduction, and the twelfth adsorption tower (l) performs pressure increase;
the top opening (13) of the first adsorption tower (a) is communicated with the top opening (13) of the seventh adsorption tower (g) through an upper connecting pipe (27), the seventh adsorption tower (g) is subjected to secondary pressure reduction, and the first adsorption tower (a) is subjected to tertiary pressure increase;
the top opening (13) of the second adsorption tower (b) is communicated with the top opening (13) of the sixth adsorption tower (f) through an upper connecting pipe (27), the sixth adsorption tower (f) performs third pressure reduction, and the second adsorption tower (b) performs second pressure increase;
the top opening (13) of the third adsorption tower (c) is communicated with the top opening (13) of the fifth adsorption tower (e) through an upper connecting pipe (27), the fifth adsorption tower (e) performs fourth pressure reduction, and the third adsorption tower (c) performs first pressure increase;
the fourth adsorption tower (d) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the ninth adsorption tower (i), the tenth adsorption tower (j) and the eleventh adsorption tower (k) with a lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a twelfth adsorption tower (l), a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g) and an eighth adsorption tower (h) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a ninth adsorption tower (i), a tenth adsorption tower (j) and an eleventh adsorption tower (k), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a10, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 270 degrees:
the upper valve (233) connects the top openings (13) of the tenth adsorption tower (j), the eleventh adsorption tower (k) and the twelfth adsorption tower (l) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the first adsorption tower (a) is communicated with the top opening (13) of the ninth adsorption tower (i) through an upper connecting pipe (27), the ninth adsorption tower (i) performs first pressure reduction, and the first adsorption tower (a) performs fourth pressure increase;
the top opening (13) of the second adsorption tower (b) is communicated with the top opening (13) of the eighth adsorption tower (h) through an upper connecting pipe (27), the eighth adsorption tower (h) performs second pressure reduction, and the second adsorption tower (b) performs third pressure increase;
the top opening (13) of the third adsorption tower (c) is communicated with the top opening (13) of the seventh adsorption tower (g) through an upper connecting pipe (27), the seventh adsorption tower (g) is used for carrying out third pressure reduction, and the third adsorption tower (c) is used for carrying out second pressure increase;
a top opening (13) of the fourth adsorption tower (d) is communicated with a top opening (13) of the sixth adsorption tower (f) through an upper connecting pipe (27), the sixth adsorption tower (f) performs fourth pressure reduction, and the fourth adsorption tower (d) performs first pressure increase;
the fifth adsorption column (e) is in a closed state;
the lower valve (231) connects the bottom openings (14) of the tenth adsorption tower (j), the eleventh adsorption tower (k) and the twelfth adsorption tower (l) with the lower header pipe (25) through the lower connecting pipe (24);
bottom openings (14) of a first adsorption tower (a), a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h) and a ninth adsorption tower (i) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower header pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a tenth adsorption tower (j), an eleventh adsorption tower (k) and a twelfth adsorption tower (l), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper header pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
a11, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 300 degrees:
the upper valve (233) connects the top openings (13) of the eleventh adsorption tower (k), the twelfth adsorption tower (l) and the first adsorption tower (a) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the second adsorption tower (b) is communicated with the top opening (13) of the tenth adsorption tower (j) through an upper connecting pipe (27), the tenth adsorption tower (j) performs first pressure reduction, and the second adsorption tower (b) performs fourth pressure increase;
the top opening (13) of the third adsorption tower (c) is communicated with the top opening (13) of the ninth adsorption tower (i) through an upper connecting pipe (27), the ninth adsorption tower (i) performs second pressure reduction, and the third adsorption tower (c) performs third pressure increase;
a top opening (13) of the fourth adsorption tower (d) is communicated with a top opening (13) of the eighth adsorption tower (h) through an upper connecting pipe (27), the eighth adsorption tower (h) is subjected to third pressure reduction, and the fourth adsorption tower (d) is subjected to second pressure increase;
the top opening (13) of the fifth adsorption tower (e) is communicated with the top opening (13) of the seventh adsorption tower (g) through an upper connecting pipe (27), the seventh adsorption tower (g) performs fourth pressure reduction, and the fifth adsorption tower (e) performs first pressure increase;
the sixth adsorption tower (f) is in a closed state;
the lower valve (231) connects the bottom openings (14) of the eleventh adsorption tower (k), the twelfth adsorption tower (l) and the first adsorption tower (a) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a second adsorption tower (b), a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i) and a tenth adsorption tower (j) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower header pipe (25), a lower valve (231), a lower connecting pipe (24), an eleventh adsorption tower (k), a twelfth adsorption tower (l) and a first adsorption tower (a) for adsorption, and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper header pipe (28) and a finished product gas port (35) to enter a finished product gas buffer tank (32);
a12, when the driving motor (232) rotates and the valve rods of the upper valve (233) and the lower valve (231) rotate to the position of 330 degrees:
the upper valve (233) connects the top openings (13) of the twelfth adsorption tower (l), the first adsorption tower (a) and the second adsorption tower (b) with the upper header pipe (28) through the upper connecting pipe (27);
the top opening (13) of the third adsorption tower (c) is communicated with the top opening (13) of the eleventh adsorption tower (k) through an upper connecting pipe (27), the eleventh adsorption tower (k) performs first pressure reduction, and the third adsorption tower (c) performs fourth pressure increase;
a top opening (13) of the fourth adsorption tower (d) is communicated with a top opening (13) of a tenth adsorption tower (j) through an upper connecting pipe (27), the tenth adsorption tower (j) performs second pressure reduction, and the fourth adsorption tower (d) performs third pressure increase;
the top opening (13) of the fifth adsorption tower (e) is communicated with the top opening (13) of the ninth adsorption tower (i) through an upper connecting pipe (27), the ninth adsorption tower (i) is used for carrying out third pressure reduction, and the fifth adsorption tower (e) is used for carrying out second pressure increase;
the top opening (13) of the sixth adsorption tower (f) is communicated with the top opening (13) of the eighth adsorption tower (h) through an upper connecting pipe (27), the eighth adsorption tower (h) performs fourth pressure reduction, and the sixth adsorption tower (f) performs first pressure increase;
the seventh adsorption column (g) is in a closed state;
the lower valve (231) is used for communicating the bottom openings (14) of the twelfth adsorption tower (l), the first adsorption tower (a) and the second adsorption tower (b) with the lower header pipe (25) through a lower connecting pipe (24);
bottom openings (14) of a third adsorption tower (c), a fourth adsorption tower (d), a fifth adsorption tower (e), a sixth adsorption tower (f), a seventh adsorption tower (g), an eighth adsorption tower (h), a ninth adsorption tower (i), a tenth adsorption tower (j) and an eleventh adsorption tower (k) are in a closed state;
at the moment, gas in the product gas buffer tank (33) sequentially passes through a product gas port (36), a three-way valve (26), a lower main pipe (25), a lower valve (231) and a lower connecting pipe (24) to be adsorbed in a twelfth adsorption tower (l), a first adsorption tower (a) and a second adsorption tower (b), and then sequentially passes through an upper connecting pipe (27), an upper valve (233), an upper main pipe (28) and a finished product gas port (35) to be adsorbed in a finished product gas buffer tank (32);
B. the control device controls the three-way valve (26) through the programmable logic controller to enable the analysis air port (37) to be communicated with the lower header pipe (25), and simultaneously, the programmable logic controller controls the frequency converter to adjust the driving motor (232) to rotate fast, so that in the process of rotating the valve rods of the upper valve (233) and the lower valve (231), the analysis process is carried out through the following steps:
the lower valve (231) is used for communicating the bottom openings (14) of the three adjacent adsorption towers (12) with the lower main pipe (25) through the lower connecting pipe (24), and meanwhile, the lower valve (231) is used for communicating the bottom openings (14) of the three adjacent adsorption towers (12) with the lower main pipe (25) through the lower connecting pipe (24);
the high pressure in the finished product gas buffer tank (32) and the low pressure in the analysis gas buffer tank (34) have pressure difference;
the product gas in the product gas buffer tank (32) sequentially passes through a product gas port (35), an upper main pipe (28), an upper valve (233) and an upper connecting pipe (27) and is analyzed in the adsorption tower (12), and the analysis gas sequentially passes through a lower connecting pipe (24), a lower valve (231), a lower main pipe (25), a three-way valve (26) and an analysis gas port (37) until the analysis gas buffer tank (34) is filled.
CN202110084791.0A 2021-01-22 2021-01-22 Sled dress pressure swing adsorption equipment Withdrawn CN112892154A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8710564D0 (en) * 1986-05-07 1987-06-10 Boc Group Inc Valving assembly
JPH0531318A (en) * 1991-08-01 1993-02-09 Mitsubishi Heavy Ind Ltd Gas separator
EP0681860A2 (en) * 1994-05-09 1995-11-15 The Boc Group, Inc. Continuous pressure difference driven adsorption process
CN203653242U (en) * 2014-01-16 2014-06-18 新疆独山子天利高新技术股份有限公司 Five-tower pressure swing adsorption nitrogen making device
CN208980325U (en) * 2018-10-31 2019-06-14 山东桦天环保科技有限公司 A kind of novel high-purity hydrogen device for making
CN210978624U (en) * 2019-11-27 2020-07-10 山东津挚环保科技有限公司 Rotary valve device of twelve-tower pressure swing adsorption system
CN211159177U (en) * 2019-11-27 2020-08-04 山东津挚环保科技有限公司 Multi-tower skid-mounted pressure swing adsorption device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8710564D0 (en) * 1986-05-07 1987-06-10 Boc Group Inc Valving assembly
JPH0531318A (en) * 1991-08-01 1993-02-09 Mitsubishi Heavy Ind Ltd Gas separator
EP0681860A2 (en) * 1994-05-09 1995-11-15 The Boc Group, Inc. Continuous pressure difference driven adsorption process
CN203653242U (en) * 2014-01-16 2014-06-18 新疆独山子天利高新技术股份有限公司 Five-tower pressure swing adsorption nitrogen making device
CN208980325U (en) * 2018-10-31 2019-06-14 山东桦天环保科技有限公司 A kind of novel high-purity hydrogen device for making
CN210978624U (en) * 2019-11-27 2020-07-10 山东津挚环保科技有限公司 Rotary valve device of twelve-tower pressure swing adsorption system
CN211159177U (en) * 2019-11-27 2020-08-04 山东津挚环保科技有限公司 Multi-tower skid-mounted pressure swing adsorption device

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Application publication date: 20210604