CN116772112A - Safe and energy-saving tail gas pressure recovery system and tail gas pressure recovery method thereof - Google Patents
Safe and energy-saving tail gas pressure recovery system and tail gas pressure recovery method thereof Download PDFInfo
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- CN116772112A CN116772112A CN202310803549.3A CN202310803549A CN116772112A CN 116772112 A CN116772112 A CN 116772112A CN 202310803549 A CN202310803549 A CN 202310803549A CN 116772112 A CN116772112 A CN 116772112A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a safe and energy-saving tail gas pressure recovery system which comprises a buffer tank assembly, a regulating valve assembly, an output pump assembly and a reaction synthesis tower assembly. The reaction synthesis tower assembly comprises a reaction synthesis tower, the reaction synthesis tower is connected with a raw material removing tower, the raw material removing tower is connected with a control assembly, and the control assembly is connected with a buffer tank assembly. The control assembly comprises a pressure equalizing and emptying table, the pressure equalizing and emptying table is connected with the top of the raw material removing tower through a pressure equalizing valve, the pressure equalizing and emptying table mainly comprises a connecting pipe, a temperature adjusting structure and a pressure equalizing structure, one end of the connecting pipe is connected with the pressure equalizing valve, the other end of the connecting pipe is connected with the pressure equalizing structure, and the temperature adjusting structure is attached to the connecting pipe. The internal pressure of the buffer tank assembly is controlled through the pressure equalizing and emptying table, so that the pressure in the buffer tank is prevented from being overlarge, and liquid in the buffer tank is vaporized, so that the stable operation of the system is influenced. The invention discloses a safe and energy-saving tail gas pressure recovery method which comprises step 1-step 5.
Description
Technical Field
The invention relates to a chemical technology research and development technology, in particular to a safe and energy-saving tail gas pressure recovery system and a tail gas pressure recovery method thereof.
Background
The chemical synthesis reaction produces a tail gas (which often contains N2, H2, CO2, etc.), and this tail gas is usually sent to a post-treatment step for treatment. A method for recycling production tail gas is disclosed in CN110454246B, for example.
In the chemical process, a raw material buffer tank is usually arranged in front of a reaction raw material tank, and is pumped to a reaction synthesizer for reaction. The pressure in the buffer tank changes along with the change of the external temperature, for example, the pressure in the tank body becomes larger along with the rise of the external temperature, the liquid in the tank is vaporized, and the gas enters the pump body, so that the pump cavitation is caused. Therefore, the liquid buffer tank needs to maintain a certain pressure to ensure the stable operation of the pump. In order to solve the technical problems, the pressure energy of the reaction tail gas is designed to be reused, if the tail gas which is originally sent to the post-treatment process is changed into the raw material buffer tank, an adjusting valve with an interlock is arranged in the middle of a conveying pipeline, the pressure in the buffer tank can be automatically adjusted, so that the pressure in the liquid buffer tank is always kept in a certain range, the energy waste of the tail gas which is directly sent to the post-treatment process can be reduced, and the effects of energy conservation and environmental protection are achieved. The utilization of the tail gas pressure can ensure the running stability of the pump, improve the safety performance and avoid the production cost increase caused by the damage of the pump body.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a safe and energy-saving tail gas pressure recovery system and a tail gas pressure recovery method.
The technical scheme of the invention is realized as follows:
the safe and energy-saving tail gas pressure recovery system comprises a buffer tank assembly, a regulating valve assembly, an output pump assembly and a reaction synthesis tower assembly, and is characterized in that,
the regulating valve component is arranged below the buffer tank component, the regulating valve component is connected with the reaction synthesis tower component through the output pump component, the reaction synthesis tower component comprises a reaction synthesis tower, the reaction synthesis tower is connected with the raw material removing tower, the raw material removing tower is connected with the control component, the control component is connected with the buffer tank component,
the control assembly comprises a pressure equalizing and emptying table, the pressure equalizing and emptying table is connected with the top of the raw material removing column through a pressure equalizing valve, the pressure equalizing and emptying table mainly comprises a connecting pipe, a temperature adjusting structure and a pressure equalizing structure, one end of the connecting pipe is connected with the pressure equalizing valve, the other end of the connecting pipe is connected with the pressure equalizing structure, the temperature adjusting structure is attached to the connecting pipe and installed, the temperature adjusting structure is used for controlling the internal pressure of the pressure equalizing structure, the pressure equalizing and emptying table is further connected with a bidirectional pressure adjusting assembly, and the bidirectional pressure adjusting assembly is connected with the buffer tank assembly.
In this exhaust gas pressure recovery system in the present invention, the surge tank assembly includes a first raw material surge tank, a second raw material surge tank, and a third raw material surge tank, the regulating valve assembly includes a first regulating valve, a second regulating valve, and a third regulating valve, and the output pump assembly includes a first output pump, a second output pump, and a third output pump, wherein the following correspond in order: the first raw material buffer tank is connected with the first output pump through a first regulating valve, the second raw material buffer tank is connected with the second output pump through a second regulating valve, and the third raw material buffer tank is connected with the third output pump through a third regulating valve.
In the tail gas pressure recovery system, the top of the raw material removing tower is also respectively connected with a first interlocking valve, a second interlocking valve and a third interlocking valve, wherein the first interlocking valve, the second interlocking valve and the third interlocking valve are connected with a first raw material buffer tank, a second raw material buffer tank and a third raw material buffer tank through a first stop valve, a second stop valve and a third stop valve.
In the exhaust gas pressure recovery system of the present invention, the bidirectional pressure regulating assembly includes a first bidirectional pressure regulating valve, a second bidirectional pressure regulating valve, and a third bidirectional pressure regulating valve, and the pressure equalizing and emptying stage is connected to the first raw material buffer tank, the second raw material buffer tank, and the third raw material buffer tank through the first bidirectional pressure regulating valve, the second bidirectional pressure regulating valve, and the third bidirectional pressure regulating valve.
In the tail gas pressure recovery system, the pressure equalizing and emptying table is used for adjusting the tail gas pressure, so that the pressure in the buffer tank assembly is kept consistent.
In the tail gas pressure recovery system, the pressure equalizing structure mainly comprises a valve body and a valve core, wherein the valve body is provided with an air inlet, an air outlet and a liquid inlet, the valve core is used for connecting the air inlet with the air outlet, a fixing piece is further arranged on the valve body, the valve core is movably connected with a sliding rod, one end of the sliding rod is connected with a conical head, and a reset spring is arranged between the sliding rod and the fixing piece.
In the exhaust gas pressure recovery system, the temperature regulating structure mainly comprises an air cylinder and a conduit, wherein the air cylinder is mounted on the connecting pipe in a fitting way, and the conduit connects the air cylinder with the liquid inlet, and liquid is filled in the air cylinder.
In the exhaust gas pressure recovery system, the liquid in the cylinder can push the sliding rod and the conical head on the sliding rod to slide along the valve core in one state.
In the tail gas pressure recovery system, the raw material removing tower consists of a tower body and a bracket, wherein the bracket is used for supporting the tower body, and the tower body is provided with a first discharge hole, a reflux groove, a second discharge hole and a third discharge hole.
The safe and energy-saving tail gas pressure recovery method is characterized by comprising the following specific steps of:
step1: introducing the reaction feed from the feed tank zone into the buffer tank assembly via a transfer line;
step2: starting an output pump assembly, conveying reaction raw materials into a reaction synthesis tower, starting reaction synthesis, and controlling the temperature and the pressure within the process index range;
step3: the materials obtained by the reaction are conveyed to a raw material removal tower through a fourth output pump, and the gas obtained by the reaction is conveyed to a buffer tank assembly through an interlocking adjusting assembly;
step4: opening an interlocking adjusting assembly on the buffer tank assembly, setting the pressure of the buffer tank assembly in a specified range, and enabling the interlocking adjusting assembly to automatically adjust according to the pressure in the tank body so as to keep the pressure of the tank body of the buffer tank assembly in a certain range;
step5: when the pressure in the buffer tank assembly is too high, the two-way pressure regulating valve assembly is manually opened, redundant tail gas pressure is sent to the even pressure emptying table, and tail gas pressure regulation is realized through the even pressure emptying table, so that the tank body pressure of the buffer tank assembly is kept within a certain range.
The safe and energy-saving exhaust pressure recovery system and the exhaust pressure recovery method have the following beneficial effects:
the invention recycles the tail gas after reaction, thereby avoiding energy waste. The tail gas is recycled and sent to the buffer tank, the pressure in the buffer tank is always kept in a certain range by utilizing the pressure of the tail gas, the running stability of the pump can be ensured, the safety performance is improved, and the production cost is increased due to the fact that the pump body is damaged. Realize automatically regulated buffer tank jar internal pressure through interlocking adjusting part, when pressure is too high, carry tail gas pressure to the pressure-equalizing blowdown platform, further control buffer tank jar internal pressure through the pressure-equalizing blowdown platform, prevent that buffer tank internal pressure from being too big, the vaporization of buffer tank internal liquid to influence the steady operation of system.
Drawings
FIG. 1 is a process flow diagram of the tail gas pressure recovery system of the present invention;
FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;
FIG. 3 is a schematic view of the structure of the raw material removing tower of the present invention;
FIG. 4 is a cross-sectional view of the pressure equalization venting station of the present invention;
FIG. 5 is a cross-sectional view of the pressure equalizing structure of the present invention;
FIG. 6 is a half cross-sectional view of a valve cartridge of the present invention;
the reference numerals are expressed as: 10-buffer tank component, 11-first raw material buffer tank, 12-second raw material buffer tank, 13-third raw material buffer tank, 20-regulating valve component, 21-first regulating valve, 22-second regulating valve, 23-third regulating valve, 30-output pump component, 31-first output pump, 32-second output pump, 33-third output pump, 40-reaction synthesis tower component, 41-reaction synthesis tower, 42-fourth output pump, 50-raw material removing tower, 51-tower body, 52-bracket, 53-first discharge port, 54-reflux tank, 55-second discharge port, 56-third discharge port, 60-control component, 61-equalizing emptying table, 611-connecting pipe, 612-temperature regulation structure, 612 '1-cylinder, 612' 2-conduit, 613-equalizing structure, 613 '1-valve body, 613' 2-air inlet, 613 '3-valve core, 613' 4-air outlet, 613 '5-inlet, 613' 6-mounting, 613 '7-slide bar, 613' 8-conical head, 613 '9-return spring, 62-equalizing valve, 63-bidirectional pressure regulating component, 63' 1-first bidirectional pressure regulating valve, 63 '2-second bidirectional pressure regulating valve, 63' 3-third bidirectional pressure regulating valve, 64-first interlocking valve, 65-second interlocking valve, 66-third interlocking valve, 67-first stop valve, 68-second stop valve, 69-third stop valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1 to 2, the safety and energy-saving exhaust gas pressure recovery system of the present invention includes a buffer tank assembly 10, a regulating valve assembly 20, an output pump assembly 30, and a reaction synthesizing column assembly 40. The regulating valve assembly 20 is installed below the buffer tank assembly 10, and the regulating valve assembly 20 is connected with the reaction synthesizing column assembly 40 through the output pump assembly 30, and the buffer tank assembly 10 includes a first raw material buffer tank 11, a second raw material buffer tank 12, and a third raw material buffer tank 13. The regulator valve assembly 20 includes a first regulator valve 21, a second regulator valve 22, and a third regulator valve 23. The output pump assembly 30 includes a first output pump 31, a second output pump 32, and a third output pump 33. Wherein, correspond in proper order: the first raw material buffer tank 11 is connected to a first output pump 31 via a first control valve 21, the second raw material buffer tank 12 is connected to a second output pump 32 via a second control valve 22, and the third raw material buffer tank 13 is connected to a third output pump 33 via a third control valve 23. The reaction-synthesizing column assembly 40 includes a reaction-synthesizing column 41 and a fourth output pump 42, the reaction-synthesizing column 41 being connected to the raw-material removing column 50 via the fourth output pump 42. The material removal column 50 is connected to a control assembly 60, and the control assembly 60 is connected to the surge tank assembly 10.
In this embodiment, the raw materials 1, 2 and 3 are respectively fed into the first, second and third raw material buffer tanks 11, 12 and 13 through pipelines, and then the regulating valve assembly 20 and the output pump assembly 30 are opened. The raw materials are sent into the reaction synthesis tower 41 through the output pump assembly 30, the reaction synthesis tower 41 is started, the reaction synthesis tower 41 starts to heat and boost pressure, synthesis reaction is carried out, and the temperature and the pressure are controlled within the process index range. The fourth output pump 42 is then started to deliver the reacted material to the material removal column 50. As shown in fig. 3, the raw material removing tower 50 is composed of a tower body 51 and a bracket 52, the bracket 52 is used for supporting the tower body 51, and the tower body 51 is provided with a first discharge port 53, a reflux groove 54, a second discharge port 55 and a third discharge port 56. After entering the tower body 51, the materials are discharged from the first discharge hole 53 and the second discharge hole 55, and enter the next working procedure. The tail gas discharged from the tower body 51 is returned to the buffer tank assembly 10 through the third discharge port 56 by the control assembly 60 for recycling. The control assembly 60 is used to ensure that the exhaust pressure recovery system is operating stably.
As shown in fig. 4 to 6, the control assembly 60 includes a pressure equalizing and venting table 61, and the pressure equalizing and venting table 61 is used for adjusting the tail gas pressure, so as to ensure that the pressure in the buffer tank assembly is consistent. The equalizing discharge table 61 is connected to the third discharge port 56 via an equalizing valve 62. The equalizing and emptying table 61 mainly comprises a connecting pipe 611, a temperature adjusting structure 612 and an equalizing structure 613, wherein one end of the connecting pipe 611 is connected with the equalizing valve 62, and the other end is connected with the equalizing structure 613. The temperature regulation structure 612 is installed with the connecting pipe laminating, and temperature regulation structure 612 is used for controlling pressure in the pressure equalizing structure 613, and pressure equalizing and emptying platform 61 still is connected with two-way pressure regulating subassembly 63, and two-way pressure regulating subassembly 63 is connected with buffer tank subassembly 10.
As shown in fig. 5, the pressure equalizing structure 613 is mainly composed of a valve body 613'1 and a valve spool 613' 3. The valve body 613'1 is provided with an air inlet 613'2, an air outlet 613'4 and a liquid inlet 613'5, the valve core 613'3 is fixedly connected in the valve body 613'1, the valve core 613'3 connects the air inlet 613'2 with the air outlet 613'4, the air inlet 613'2 is connected with the pressure equalizing valve 62, and the air outlet 613'4 is connected with the bidirectional pressure regulating component 63. One end of the valve body 613'1 is provided with a fixing piece 613'6, a sliding rod 613'7 is movably connected to the axis of the valve core 613'3, one end of the sliding rod 613'7 is fixedly connected with a conical head 613'8, and the conical head 613'8 is positioned in the valve core 613'1 and can slide on the axis of the valve core 613' 1. A return spring 613'9 is arranged between the slide bar 613'7 and the fixing piece 613'6, and the return spring 613'9 is used for driving the slide bar 613'7 and the upper conical head 613'8 to return.
As shown in fig. 4, the temperature adjustment structure 612 is mainly composed of a cylinder 612'1 and a duct 612' 2. The cylinder 612'1 is mounted on the connecting pipe 611 in a fitting manner, and the conduit 612'2 connects the cylinder 612'1 with the liquid inlet 613'5, wherein the cylinder 612'1 is made of a material with better heat conductivity, and liquid with a lower boiling point is filled in the cylinder 612' 1. When the temperature of the tail gas is too high, the liquid in the cylinder 612'1 boils, the liquid in the cylinder 612'1 enters through the liquid inlet 613'5, and pushes the sliding rod 613'7 and the upper conical head 613'8 thereof to slide in a direction approaching the fixing piece 613' 6.
In this embodiment, the exhaust gas enters through the air inlet 613'2, passes through the valve core 613'3, and is discharged through the air outlet 613' 4. As shown in fig. 6, when the exhaust gas passes through the spool 613'3, the exhaust gas flows from the lower end chamber of the spool 613'3 to the middle chamber of the spool 613'3 through the first opening c, and then the exhaust gas flows from the middle chamber of the spool 613'3 to the middle chamber of the spool 613'3 through the second opening b. The conical head 613'8 is located in the middle chamber of the valve core 613'3, after the tail gas enters the middle chamber of the valve core 613'3, the conical head 613'8 is pushed towards the direction close to the fixing piece 613'6, the tail gas can be discharged from two sides of the conical head 613'8, and the conical head 613'8 slides up and down to control the internal pressure of the valve core 613' 3. When the pressure in the spool 613'3 becomes large, the temperature of the connection pipe 611 rises, the liquid in the cylinder 612'1 boils, the liquid in the cylinder 612'1 enters through the liquid inlet 613'5, and the slide bar 613'7 and the upper tapered head 613'8 thereof are pushed to slide in a direction approaching the fixing piece 613' 6. The conical head 613'8 slides in a direction approaching the fixing piece 613'6, the pressure inside the control valve spool 613'3 is reduced, thereby ensuring that the pressure of the valve spool 613'3 always tends to be stable.
As shown in fig. 2, the bi-directional adjusting assembly 63 adjusts the exhaust pressure, protecting the pump and stabilizing the whole system. The exhaust gas is fed into the surge tank assembly 10 via the venting equalization table 61 and the bi-directional regulator assembly 63 to maintain tank pressure. The bi-directional pressure regulating assembly 63 includes a first bi-directional pressure regulating valve 63'1, a second bi-directional pressure regulating valve 63'2, and a third bi-directional pressure regulating valve 63'3. The air outlet 613'4 is connected to the first raw material buffer tank 11, the second raw material buffer tank 12, and the third raw material buffer tank 13 via the first bidirectional pressure regulating valve 63'1, the second bidirectional pressure regulating valve 63'2, and the third bidirectional pressure regulating valve 63'3.
The top of the raw material removing tower 50 is also respectively connected with a first interlocking valve 64, a second interlocking valve 65 and a third interlocking valve 66, wherein the first interlocking valve 64, the second interlocking valve 65 and the third interlocking valve 66 are connected with the first raw material buffer tank 11, the second raw material buffer tank 12 and the third raw material buffer tank 13 through a first stop valve 67, a second stop valve 68 and a third stop valve 69. The first interlocking valve 64, the second interlocking valve 65 and the third interlocking valve 66 are automatically interlocked and adjusted, and in general, the tail gas is directly conveyed into the buffer tank assembly 10 through the first interlocking valve 64, the second interlocking valve 65 and the third interlocking valve 66 to maintain a certain pressure, so that the process is simple, convenient and easy to control. When the pressure in the buffer tank assembly 10 is too high, the pressure in the buffer tank assembly 10 needs to be regulated, the bidirectional regulating assembly 63 is manually opened, and the tail gas is conveyed into the buffer tank assembly 10 through the emptying and homogenizing table 61 and the bidirectional regulating assembly 63 to maintain the tank pressure. The pressure of the buffer tank assembly 10 is controlled by the emptying and pressure equalizing table 61 to prevent the pressure in the buffer tank from being excessive, and the liquid in the buffer tank is vaporized, so that the stable operation of the system is affected.
Example two
On the basis of the above embodiment, the present embodiment further discloses a safe and energy-saving exhaust pressure recovery method, which includes:
step1: introducing the reaction feed from the feed tank zone into the buffer tank assembly via a transfer line;
step2: starting an output pump assembly, conveying reaction raw materials into a reaction synthesis tower, starting reaction synthesis, and controlling the temperature and the pressure within the process index range;
step3: the materials obtained by the reaction are conveyed to a raw material removal tower through a fourth output pump, and the gas obtained by the reaction is conveyed to a buffer tank assembly through an interlocking adjusting assembly;
step4: opening an interlocking adjusting assembly on the buffer tank assembly, setting the pressure of the buffer tank assembly in a specified range, and enabling the interlocking adjusting assembly to automatically adjust according to the pressure in the tank body so as to keep the pressure of the tank body of the buffer tank assembly in a certain range;
step5: when the pressure in the buffer tank assembly is too high, the two-way pressure regulating valve assembly is manually opened, redundant tail gas pressure is sent to the even pressure emptying table, and tail gas pressure regulation is realized through the even pressure emptying table, so that the tank body pressure of the buffer tank assembly is kept within a certain range.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. The safe and energy-saving tail gas pressure recovery system comprises a buffer tank assembly, a regulating valve assembly, an output pump assembly and a reaction synthesis tower assembly, and is characterized in that,
the regulating valve component is arranged below the buffer tank component, the regulating valve component is connected with the reaction synthesis tower component through the output pump component, the reaction synthesis tower component comprises a reaction synthesis tower, the reaction synthesis tower is connected with the raw material removing tower, the raw material removing tower is connected with the control component, the control component is connected with the buffer tank component,
the control assembly comprises a pressure equalizing and emptying table, the pressure equalizing and emptying table is connected with the top of the raw material removing column through a pressure equalizing valve, the pressure equalizing and emptying table mainly comprises a connecting pipe, a temperature adjusting structure and a pressure equalizing structure, one end of the connecting pipe is connected with the pressure equalizing valve, the other end of the connecting pipe is connected with the pressure equalizing structure, the temperature adjusting structure is attached to the connecting pipe and installed, the temperature adjusting structure is used for controlling the internal pressure of the pressure equalizing structure, the pressure equalizing and emptying table is further connected with a bidirectional pressure adjusting assembly, and the bidirectional pressure adjusting assembly is connected with the buffer tank assembly.
2. The exhaust pressure recovery system of claim 1, wherein the buffer tank assembly comprises a first feedstock buffer tank, a second feedstock buffer tank, and a third feedstock buffer tank, the regulator valve assembly comprises a first regulator valve, a second regulator valve, and a third regulator valve, and the output pump assembly comprises a first output pump, a second output pump, and a third output pump, wherein the following correspond in sequence: the first raw material buffer tank is connected with the first output pump through a first regulating valve, the second raw material buffer tank is connected with the second output pump through a second regulating valve, and the third raw material buffer tank is connected with the third output pump through a third regulating valve.
3. The tail gas pressure recovery system of claim 2, wherein the feedstock removal column top is further connected with a first interlock valve, a second interlock valve, and a third interlock valve, respectively, wherein the first interlock valve, the second interlock valve, and the third interlock valve are connected with the first feedstock buffer tank, the second feedstock buffer tank, and the third feedstock buffer tank via a first stop valve, a second stop valve, and a third stop valve.
4. The exhaust gas pressure recovery system according to claim 3, wherein the bi-directional pressure regulating assembly comprises a first bi-directional pressure regulating valve, a second bi-directional pressure regulating valve, and a third bi-directional pressure regulating valve, and the pressure equalizing vent station is connected to the first feedstock buffer tank, the second feedstock buffer tank, and the third feedstock buffer tank via the first bi-directional pressure regulating valve, the second bi-directional pressure regulating valve, and the third bi-directional pressure regulating valve.
5. The exhaust pressure recovery system of claim 3, wherein the pressure equalizing vent station is configured to regulate exhaust pressure to ensure a consistent pressure within the buffer tank assembly.
6. The tail gas pressure recovery system according to claim 1, wherein the pressure equalizing structure mainly comprises a valve body and a valve core, an air inlet, an air outlet and a liquid inlet are formed in the valve body, the valve core connects the air inlet with the air outlet, a fixing piece is further mounted on the valve body, a sliding rod is movably connected to the valve core, one end of the sliding rod is connected with a conical head, and a reset spring is arranged between the sliding rod and the fixing piece.
7. The exhaust gas pressure recovery system according to claim 6, wherein the temperature regulating structure is mainly composed of a cylinder and a conduit, the cylinder is fitted on the connecting pipe, the conduit connects the cylinder with the liquid inlet, and the liquid is contained in the cylinder.
8. The exhaust gas pressure recovery system of claim 7, wherein the fluid in the cylinder, in one state, pushes the slide bar and its upper cone head to slide along the valve core.
9. A method for recovering exhaust gas pressure according to claim 1, comprising the specific steps of:
step1: introducing the reaction feed from the feed tank zone into the buffer tank assembly via a transfer line;
step2: starting an output pump assembly, conveying reaction raw materials into a reaction synthesis tower, starting reaction synthesis, and controlling the temperature and the pressure within the process index range;
step3: the materials obtained by the reaction are conveyed to a raw material removal tower through a fourth output pump, and the gas obtained by the reaction is conveyed to a buffer tank assembly through an interlocking adjusting assembly;
step4: opening an interlocking adjusting assembly on the buffer tank assembly, setting the pressure of the buffer tank assembly in a specified range, and enabling the interlocking adjusting assembly to automatically adjust according to the pressure in the tank body so as to keep the pressure of the tank body of the buffer tank assembly in a certain range;
step5: when the pressure in the buffer tank assembly is too high, the two-way pressure regulating valve assembly is manually opened, redundant tail gas pressure is sent to the even pressure emptying table, and tail gas pressure regulation is realized through the even pressure emptying table, so that the tank body pressure of the buffer tank assembly is kept within a certain range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310803549.3A CN116772112A (en) | 2023-07-03 | 2023-07-03 | Safe and energy-saving tail gas pressure recovery system and tail gas pressure recovery method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310803549.3A CN116772112A (en) | 2023-07-03 | 2023-07-03 | Safe and energy-saving tail gas pressure recovery system and tail gas pressure recovery method thereof |
Publications (1)
| Publication Number | Publication Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137746Y (en) * | 2008-01-04 | 2008-10-22 | 浙江派沃自控仪表有限公司 | Self-operated pressure-temperature assembled regulation valve |
| CN201149128Y (en) * | 2008-01-28 | 2008-11-12 | 浙江派沃自控仪表有限公司 | Self-operated type temperature regulating valve |
| CN201944365U (en) * | 2010-04-09 | 2011-08-24 | 珠海市舒丽玛温控卫浴设备有限公司 | Pressure temperature safety valve |
| CN204358439U (en) * | 2014-12-19 | 2015-05-27 | 唐山境界实业有限公司 | A kind of fuel gas recycle device |
| CN205859327U (en) * | 2016-07-19 | 2017-01-04 | 宁波埃美柯铜阀门有限公司 | Thermostatic type relief valve |
| CN218032680U (en) * | 2022-06-24 | 2022-12-13 | 安庆市泰恒化工科技有限公司 | Automatic pressure adjusting device for raw material buffer tank of alkane dehydrogenation device |
-
2023
- 2023-07-03 CN CN202310803549.3A patent/CN116772112A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201137746Y (en) * | 2008-01-04 | 2008-10-22 | 浙江派沃自控仪表有限公司 | Self-operated pressure-temperature assembled regulation valve |
| CN201149128Y (en) * | 2008-01-28 | 2008-11-12 | 浙江派沃自控仪表有限公司 | Self-operated type temperature regulating valve |
| CN201944365U (en) * | 2010-04-09 | 2011-08-24 | 珠海市舒丽玛温控卫浴设备有限公司 | Pressure temperature safety valve |
| CN204358439U (en) * | 2014-12-19 | 2015-05-27 | 唐山境界实业有限公司 | A kind of fuel gas recycle device |
| CN205859327U (en) * | 2016-07-19 | 2017-01-04 | 宁波埃美柯铜阀门有限公司 | Thermostatic type relief valve |
| CN218032680U (en) * | 2022-06-24 | 2022-12-13 | 安庆市泰恒化工科技有限公司 | Automatic pressure adjusting device for raw material buffer tank of alkane dehydrogenation device |
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