CN106946226B - Reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment - Google Patents

Reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment Download PDF

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Publication number
CN106946226B
CN106946226B CN201710160971.6A CN201710160971A CN106946226B CN 106946226 B CN106946226 B CN 106946226B CN 201710160971 A CN201710160971 A CN 201710160971A CN 106946226 B CN106946226 B CN 106946226B
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air
electromagnetic valve
cylinder
molecular sieve
air pipe
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CN106946226A (en
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龚强
彭伟
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Suzhou Smart Advanced Coating Technologies Co ltd
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Suzhou Smart Advanced Coating Technologies Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0001—Separation or purification processing
    • C01B2210/0009—Physical processing
    • C01B2210/0014—Physical processing by adsorption in solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0028—Separation of the specific gas from gas mixtures containing a minor amount of this specific gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0046—Nitrogen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The application discloses air separation oxygen generation system for car, in particular to reciprocating molecular sieve air separation oxygen generation system capable of continuously generating rich oxygen for car tail gas treatment. This application uses two sets of system oxygen systems that are parallel, and every set of system oxygen system protection contains the reciprocating type air compressor of a double-cylinder, and every cylinder is connected a molecular sieve packed column by gas piping respectively, all is equipped with five solenoid valves corresponding to every molecular sieve packed column, realizes producing the oxygen-enriched air in succession through the regular switch of solenoid valve and is used for automobile exhaust to handle. The system can continuously provide oxygen-enriched air for the automobile exhaust purification device so as to improve the efficiency of catalytic conversion of pollutants, thereby reducing the emission of pollutants.

Description

Reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment
Technical Field
The application relates to the technical field of automobile exhaust treatment, in particular to a reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment.
Background
With the rapid development of economy, the number of automobiles is continuously increased, automobile exhaust pollution becomes a main source of air pollution in China, the pollution is an important reason for dust haze and photochemical smog, and the strict control of the automobile exhaust pollution is imperative. The control of the automobile exhaust pollution can be divided into two technologies of internal purification and external purification, wherein the internal purification mainly aims to improve the quality of fuel oil and improve the combustion condition of fuel in an engine, and the generation of pollutants is reduced as much as possible; and the purification outside the machine is to install a catalytic purifier to treat harmful gases. The core component of the purifier used for purifying the engine outside is an automobile exhaust gas purifying catalyst, and harmful CO and CxHy are converted into CO2 and H2O and NOx is converted into N2 by the catalytic action of the automobile exhaust gas purifying catalyst.
In the conversion process of CO and CxHy existing in automobile exhaust, the conversion process is an oxidation reaction, namely the CO and CxHy are oxidized with O2 to form CO2 and H2O by the action of a catalyst, as shown in the following:
CO+1/2O2→CO2 (1)
CxHy+(1+y/4)O2→xCO2+(y/2)H2O (2)
generally, the oxygen in equations (1) and (2) is derived from air, however, the oxygen content in air is only 21%, and oxygen is supplied to air to achieve CO and CxHyIf pure oxygen is used instead for CO and C, the conversion of (A) is relatively inefficient due to the relatively low oxygen supplyxHyThe catalytic conversion efficiency can be greatly improved. Since the oxygen content of pure oxygen is more than 99.5 percent and is 4.75 times of the oxygen content in air, the oxygen content of the pure oxygen is 4.75 times of the oxygen content in air, so that the oxygen content of the pure oxygen is 4.75 times of the oxygen content of the pure oxygen, and CO and C can be realized by using the pure oxygenxHyMore complete conversion and thus greatly reduced exhaust pollutant emissions.
Disclosure of Invention
The purpose of the application is: aiming at the problems, the reciprocating molecular sieve air separation oxygen generation system for treating the automobile exhaust can separate nitrogen and oxygen from air which directly enters an exhaust purification device in advance to obtain pure oxygen, and the pure oxygen is sent to the exhaust purification device to participate in CO and CxHyIn the catalytic conversion, the efficiency of tail gas purification is improved, and simultaneously, in the running process of the automobile, pure oxygen can be continuously introduced into the tail gas purification device so as to ensure CO and C in the tail gasxHyCan be continuously and efficiently converted.
In order to achieve the purpose, the technical scheme of the application is as follows:
a reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment comprises:
the reciprocating air compressor I comprises a first air cylinder, a second air cylinder and an air cylinder driving device I, wherein the air cylinder driving device I is in transmission connection with air cylinder pistons in the first air cylinder and the second air cylinder so as to drive the air cylinder pistons to reciprocate; by means of the action of the cylinder driving device I, the first cylinder can be selectively in an air suction state, the second cylinder can be selectively in an air exhaust state, or the first cylinder can be in an air exhaust state, and the second cylinder can be in an air suction state;
the reciprocating air compressor II comprises a third air cylinder, a fourth air cylinder and an air cylinder driving device II, wherein the air cylinder driving device II is in transmission connection with air cylinder pistons in the third air cylinder and the fourth air cylinder so as to drive the air cylinder pistons to reciprocate, the third air cylinder is provided with an air suction opening and an air exhaust opening, and the fourth air cylinder is provided with an air suction opening and an air exhaust opening; by means of the action of the cylinder driving device II, the third cylinder can be selectively in an air suction state, the fourth cylinder can be selectively in an exhaust state, or the third cylinder can be in an exhaust state, and the fourth cylinder can be in an air suction state;
the first electromagnetic valve, the second electromagnetic valve, the first molecular sieve packing column, the third electromagnetic valve and the fourth electromagnetic valve are sequentially connected through a first air pipe, the first air pipe between the first electromagnetic valve and the second electromagnetic valve is communicated with the first exhaust gas phase of the first air cylinder through another air pipe, and the first air pipe between the third electromagnetic valve and the fourth electromagnetic valve is communicated with the extraction opening of the first air cylinder through another air pipe;
a fifth electromagnetic valve, a sixth electromagnetic valve, a second molecular sieve packing column, a seventh electromagnetic valve and an eighth electromagnetic valve which are sequentially connected through a second air pipe, wherein the second air pipe between the fifth electromagnetic valve and the sixth electromagnetic valve is communicated with an exhaust port of the second air cylinder through another air pipe, and the second air pipe between the seventh electromagnetic valve and the eighth electromagnetic valve is communicated with an air suction port of the second air cylinder through another air pipe;
one end of the third air pipe is communicated with the first air cylinder between the third electromagnetic valve and the first molecular sieve packing column, and the other end of the third air pipe is communicated with the second air pipe between the seventh electromagnetic valve and the second molecular sieve packing column;
a ninth electromagnetic valve and a tenth electromagnetic valve connected to the third air pipe;
an eleventh electromagnetic valve, a twelfth electromagnetic valve, a third molecular sieve packed column, a thirteenth electromagnetic valve and a fourteenth electromagnetic valve which are sequentially connected through a fourth air pipe, wherein the fourth air pipe between the eleventh electromagnetic valve and the twelfth electromagnetic valve is communicated with an air suction opening of the third air cylinder through another air pipe, and the fourth air pipe between the thirteenth electromagnetic valve and the fourteenth electromagnetic valve is communicated with an air exhaust opening of the third air cylinder through another air pipe;
a fifteenth electromagnetic valve, a sixteenth electromagnetic valve, a fourth molecular sieve packing column, a seventeenth electromagnetic valve and an eighteenth electromagnetic valve which are sequentially connected through a fifth air pipe, wherein the fifth air pipe between the fifteenth electromagnetic valve and the sixteenth electromagnetic valve is communicated with an air suction opening of the fourth air cylinder through another air pipe, and the fifth air pipe between the seventeenth electromagnetic valve and the eighteenth electromagnetic valve is communicated with an air exhaust opening of the fourth air cylinder through another air pipe;
one end of the sixth air pipe is communicated with the fourth air cylinder between the twelfth electromagnetic valve and the third molecular sieve packing column, and the other end of the sixth air pipe is communicated with the fifth air pipe between the sixteenth electromagnetic valve and the fourth molecular sieve packing column;
a nineteenth electromagnetic valve and a twentieth electromagnetic valve which are connected to the sixth air pipe;
one end of the seventh air pipe is communicated with the third air pipe between the ninth electromagnetic valve and the tenth electromagnetic valve, and the other end of the seventh air pipe is communicated with an automobile exhaust purification device; and
and one end of the eighth air pipe is communicated with the sixth air pipe between the nineteenth electromagnetic valve and the twentieth electromagnetic valve, and the other end of the eighth air pipe is communicated with an exhaust gas purification device of the automobile.
In some preferred embodiments of the present application, the cylinder driving device i includes:
a rotating wheel capable of performing pivoting motion around the axis of the rotating wheel,
a first slide block and a second slide block which can transversely move left and right,
one end of the first connecting rod is hinged on the first sliding block, and the other end of the first connecting rod is hinged on the rotating wheel;
one end of the second connecting rod is hinged on the second sliding block, and the other end of the second connecting rod is hinged on the rotating wheel;
a third connecting rod connected between the piston of the first cylinder and the first slider, an
And the fourth connecting rod is connected between the piston of the second cylinder and the second sliding block.
In some preferred embodiments of the present application, a hinge point of the first link and the rotating wheel is located on an outer edge of the rotating wheel, and a hinge point of the second link and the rotating wheel is located on an outer edge of the rotating wheel.
In further preferred embodiments of the present application, the first link and the second link are hinged at the same portion of the wheel.
In further preferred embodiments of the present application, the pivoting movement of the wheel is driven by a motor.
In still other preferred embodiments of the present application, a smart controller is further included, and the motor, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve, the seventh solenoid valve, the eighth solenoid valve, the ninth solenoid valve, the tenth solenoid valve, the eleventh solenoid valve, the twelfth solenoid valve, the thirteenth solenoid valve, the fourteenth solenoid valve, the fifteenth solenoid valve, the sixteenth solenoid valve, the seventeenth solenoid valve, the eighteenth solenoid valve, the nineteenth solenoid valve, and the twentieth solenoid valve are electrically connected to the smart controller.
In still other preferred embodiments of the present application, the molecular sieves packed in the first, second, third and fourth molecular sieve packed columns are all lithium type molecular sieves.
In further preferred embodiments of the present application, the seventh gas pipe and the eighth gas pipe have a common pipe section leading to the exhaust gas purification device.
The application has the advantages that: the application overcomes the problem that pressure swing adsorption process equipment is huge and can not be used for automobiles in limited space in the prior oxygen generation technology, the reciprocating air compressor and four sets of molecular sieves which use double cylinders are used for air separation oxygen generation packed columns, and the rotating power provided for the wheel shaft of the reciprocating air compressor after the automobile is started is used for realizing the continuous supply of pure oxygen for the process of automobile tail gas catalytic treatment under the condition of regular switching of a plurality of electromagnetic valves. The invention is characterized in that the reciprocating air compressor is used for realizing the variable pressure adsorption and desorption process of nitrogen, the design is flexible, the volume is small, the oxygen supply amount is high, pure oxygen can be uninterruptedly supplied, the pollutant content in tail gas is greatly reduced, and the pollution to the atmosphere can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment in an embodiment of the application;
FIG. 2 is a schematic diagram of the operation state of a reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment in the first 1/4 period in the embodiment of the application;
FIG. 3 is a schematic diagram of the operation state of the reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment in the second 1/4 period in the embodiment of the application;
FIG. 4 is a schematic diagram of the operation state of a reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment in a third 1/4 period in the embodiment of the application;
FIG. 5 is a schematic diagram of the operation state of the reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment in the fourth 1/4 period in the embodiment of the application.
Wherein: 1-a second electromagnetic valve, 2-a first electromagnetic valve, 3-a fifth electromagnetic valve, 4-a sixth electromagnetic valve, 5-a first molecular sieve packing column, 6-a first cylinder, 7-a cylinder driving device I, 8-a second cylinder, 9-a second molecular sieve packing column, 10-a third electromagnetic valve, 11-a fourth electromagnetic valve, 12-an eighth electromagnetic valve, 13-a seventh electromagnetic valve, 14-a ninth electromagnetic valve, 15-a tenth electromagnetic valve, 16-a nineteenth electromagnetic valve, 17-a twentieth electromagnetic valve, 18-a twelfth electromagnetic valve, 19-an eleventh electromagnetic valve, 20-a fifteenth electromagnetic valve, 21-a sixteenth electromagnetic valve, 22-a third molecular sieve packing column, 23-a third cylinder, 24-a reciprocating air compressor II, 25-fourth cylinder, 26-fourth molecular sieve packing column, 27-thirteenth electromagnetic valve, 28-fourteenth electromagnetic valve, 29-eighteenth electromagnetic valve and 30-seventeenth electromagnetic valve.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Fig. 1 to 5 show a preferred embodiment of the reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to the present application, which mainly comprises: the two reciprocating air compressors are respectively a reciprocating air compressor I and a reciprocating air compressor II, and the two reciprocating air compressors are of a parallel-bar structure, namely, are provided with two independent air cylinders; the four molecular sieve filler columns are respectively a first molecular sieve filler column 5, a second molecular sieve filler column 9, a third molecular sieve filler column 22 and a fourth molecular sieve filler column 26; the 20 solenoid valves are a first solenoid valve 2, a second solenoid valve 1, a third solenoid valve 10, a fourth solenoid valve 11, a fifth solenoid valve 3, a sixth solenoid valve 4, a seventh solenoid valve 13, an eighth solenoid valve 12, a ninth solenoid valve 14, a tenth solenoid valve 15, an eleventh solenoid valve 19, a twelfth solenoid valve 18, a thirteenth solenoid valve 27, a fourteenth solenoid valve 28, a fifteenth solenoid valve 20, a sixteenth solenoid valve 21, a seventeenth solenoid valve 30, an eighteenth solenoid valve 29, a nineteenth solenoid valve 16, and a twentieth solenoid valve 17, respectively. Wherein:
the reciprocating air compressor I comprises a first air cylinder 6, a second air cylinder 8 and an air cylinder driving device I7, wherein air cylinder pistons in the first air cylinder 6 and the second air cylinder 8 are in transmission connection to drive the air cylinder pistons to reciprocate. Namely, the reciprocating air compressor I has two cylinders. The first cylinder 6 has a suction port and an exhaust port. The second cylinder 8 also has a suction port and an exhaust port. And by means of the action of the cylinder driving device I7, the first cylinder 6 can be selectively in a suction state, the second cylinder 8 can be selectively in a discharge state, or the first cylinder 6 can be selectively in a discharge state, and the second cylinder 8 can be selectively in a suction state. That is, when the cylinder driving device i 7 is activated, it will drive the first cylinder 6 and the second cylinder 8 to be in two different working states, one is an air-pumping state, and the other is an air-exhausting state.
The structure of the reciprocating air compressor II is the same as that of the reciprocating air compressor I, and the reciprocating air compressor II also comprises two cylinders and a cylinder driving device II 24 which is in transmission connection with cylinder pistons in the two cylinders so as to drive the cylinder pistons to reciprocate. For the convenience of description of the present technical solution, the two cylinders of the reciprocating air compressor ii are referred to as a third cylinder 23 and a fourth cylinder 25, respectively. The third cylinder 23 has a suction port and an exhaust port. The fourth cylinder 25 also has a suction port and an exhaust port. By the operation of the cylinder driving device ii 24, the third cylinder 23 and the fourth cylinder 25 can be selectively in the suction state, or the third cylinder 23 and the fourth cylinder 25 can be selectively in the discharge state. That is, when the cylinder driving device ii 24 operates, it will drive the third cylinder 23 and the fourth cylinder 25 to respectively operate in two different working states, one is in an air-extracting state, and the other is in an air-exhausting state.
The suction ports and exhaust ports on the above-described first cylinder 6, second cylinder 8, third cylinder 23, and fourth cylinder 25 have such a characteristic: when the cylinder acts (the working volume is increased or reduced), if the air pumping port is in an open state, the cylinder pumps air, and then the air exhaust port is in a closed state; if the exhaust port is in an open state, the cylinder exhausts, and then the extraction port is in a closed state. That is, only one of the suction port and the exhaust port of any cylinder is in an open working state, and the other one is in a closed state. This feature can be achieved by providing the structure of the pumping and exhausting ports, and is not described in detail herein for the prior art.
The first electromagnetic valve 2, the second electromagnetic valve 1, the first molecular sieve packing column 5, the third electromagnetic valve 10 and the fourth electromagnetic valve 11 are sequentially connected through a first air pipe (not marked in the figure). And the first air pipe between the first electromagnetic valve 2 and the second electromagnetic valve 1 is communicated with the exhaust port of the first air cylinder 6 through another air pipe, and the first air pipe between the third electromagnetic valve 10 and the fourth electromagnetic valve 11 is communicated with the suction port of the first air cylinder 6 through another air pipe.
In order to ensure that the view is more concise and clearer, the reference numerals in the attached fig. 1 to 4 of the specification do not mark each trachea in each system.
The fifth electromagnetic valve 3, the sixth electromagnetic valve 4, the second molecular sieve packed column 9, the seventh electromagnetic valve 13 and the eighth electromagnetic valve 12 are connected in sequence through a second air pipe. And the aforementioned second air pipe between the fifth electromagnetic valve 3 and the sixth electromagnetic valve 4 is communicated with the exhaust port of the second cylinder 8 through another air pipe, and the second air pipe between the seventh electromagnetic valve 13 and the eighth electromagnetic valve 12 is communicated with the suction port of the second cylinder 8 through another air pipe.
One end of a third air pipe (not marked in the figure) is communicated with the first air cylinder between the third electromagnetic valve 10 and the first molecular sieve packing column 5, and the other end of the third air pipe is communicated with the second air pipe between the seventh electromagnetic valve 13 and the second molecular sieve packing column 9.
The ninth solenoid valve 14 and the tenth solenoid valve 15 are connected to the third air pipe at a distance for connection of a seventh air pipe described below.
An eleventh electromagnetic valve 19, a twelfth electromagnetic valve 18, a third molecular sieve packed column 22, a thirteenth electromagnetic valve 27 and a fourteenth electromagnetic valve 28 are connected in sequence through a fourth air pipe. And the aforementioned fourth air pipe between the eleventh electromagnetic valve 19 and the twelfth electromagnetic valve 18 communicates with the suction port of the third air cylinder 23 through another air pipe, and the aforementioned fourth air pipe between the thirteenth electromagnetic valve 27 and the fourteenth electromagnetic valve 28 communicates with the exhaust port of the third air cylinder 23 through another air pipe.
And the fifteenth electromagnetic valve 20, the sixteenth electromagnetic valve 21, the fourth molecular sieve packing column 26, the seventeenth electromagnetic valve 30 and the eighteenth electromagnetic valve 29 are sequentially connected through a fifth air pipe. And the aforesaid fifth air pipe between the fifteenth electromagnetic valve 20 and the sixteenth electromagnetic valve 21 is communicated with the air suction port of the said fourth air cylinder 25 through another air pipe, and the aforesaid fifth air pipe between the seventeenth electromagnetic valve 30 and the eighteenth electromagnetic valve 29 is communicated with the air discharge port of the fourth air cylinder 25 through another air pipe.
One end of a sixth air pipe (not labeled in the figure) is communicated with the fourth air cylinder between the twelfth electromagnetic valve 18 and the third molecular sieve packing column 22, and the other end of the sixth air pipe is communicated with the fifth air pipe between the sixteenth electromagnetic valve 21 and the fourth molecular sieve packing column 26.
The nineteenth and twentieth solenoid valves 16 and 17 are connected to the sixth air pipe at a distance for connection of a seventh air pipe described below.
One end of the seventh air pipe is communicated with the third air pipe between the ninth electromagnetic valve 14 and the tenth electromagnetic valve 15, and the other end of the seventh air pipe is communicated with an exhaust gas purification device of the automobile.
One end of the eighth air pipe is communicated with the sixth air pipe between the nineteenth electromagnetic valve 16 and the twentieth electromagnetic valve 17, and the other end of the eighth air pipe is communicated with an exhaust gas purification device of the automobile.
Furthermore, referring to fig. 1, in order to save cost and facilitate the arrangement of the ventilation pipeline, the seventh air pipe and the eighth air pipe have a common pipe section, and specifically, the pipe sections of the seventh air pipe and the eighth air pipe, which lead to the end of the exhaust gas purification device, are the common pipe section.
The cylinder driving device I7 adopts a cam connecting rod structure and is generally called a rotary linkage wheel shaft. Referring to fig. 1, the cylinder driving apparatus i includes:
a rotating wheel capable of performing pivoting motion around the axis of the rotating wheel,
a first slide block and a second slide block which can transversely move left and right,
one end of the first connecting rod is hinged on the first sliding block, and the other end of the first connecting rod is hinged on the rotating wheel;
one end of the second connecting rod is hinged on the second sliding block, and the other end of the second connecting rod is hinged on the rotating wheel;
a third connecting rod connected between the piston of the first cylinder and the first slider, an
And the fourth connecting rod is connected between the piston of the second cylinder and the second sliding block.
When the rotating wheel rotates anticlockwise in the drawing 2, the first connecting rod pulls the first sliding block to move rightwards, so that the piston in the first cylinder is pulled to move rightwards, the working volume of the first cylinder is gradually increased, and the first cylinder is in an air suction state; the second connecting rod pushes the second sliding block to move rightwards, so that the piston in the second cylinder is pushed to move rightwards, the working volume of the second cylinder is gradually reduced, and the second cylinder is in an exhaust state.
When the rotating wheel rotates anticlockwise in fig. 3, the first connecting rod pushes the first sliding block to move leftwards, so that the piston in the first cylinder is pushed to move leftwards, the working volume of the first cylinder is gradually reduced, and the first cylinder is in an exhaust state; the second connecting rod pulls the second sliding block to move leftwards, and then pulls the piston in the second cylinder to move leftwards, the working volume of the second cylinder is gradually increased, and the second cylinder is in an air suction state.
In order to make the rotation of runner can drive first connecting rod and second connecting rod removal by a wide margin, this embodiment sets up the pin joint of first connecting rod and runner on the outer fringe of runner, also sets up the pin joint of second connecting rod and runner on the outer fringe of runner. And the first connecting rod and the second connecting rod are hinged at the same part of the rotating wheel.
The pivoting movement of the wheel is typically driven by a motor.
The cylinder driving device II 24 has the same structure as the cylinder driving device I7, and the description thereof is omitted.
The intelligent controller is characterized by further comprising an intelligent controller, and the motor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve, the sixth electromagnetic valve, the seventh electromagnetic valve, the eighth electromagnetic valve, the ninth electromagnetic valve, the tenth electromagnetic valve, the eleventh electromagnetic valve, the twelfth electromagnetic valve, the thirteenth electromagnetic valve, the fourteenth electromagnetic valve, the fifteenth electromagnetic valve, the sixteenth electromagnetic valve, the seventeenth electromagnetic valve, the eighteenth electromagnetic valve, the nineteenth electromagnetic valve and the twentieth electromagnetic valve are electrically connected with the intelligent controller.
The molecular sieves filled in the first molecular sieve filled column 5, the second molecular sieve filled column 9, the third molecular sieve filled column 22 and the fourth molecular sieve filled column 26 are all lithium type molecular sieves.
Referring again to fig. 2-5, the operation flow of the air separation oxygen generation system of the present embodiment will now be briefly described as follows:
in the first 1/4 cycle, the on-off state (dark color is on, light color is off) of each solenoid valve and the open state (dark color is on, light color is off) of the gas pipeline in fig. 2 are as shown in fig. 2, only the seven solenoid valves of the fourth, sixth, eighth, tenth, twelfth, sixteenth and eighteenth are in the open state, and the rest of the solenoid valves are in the closed state. As can be seen from fig. 1, the working volume of the first cylinder 6 is gradually increasing and air gradually passes through the fourth solenoid valve 11 into the first cylinder 6. After being compressed, the air in the second cylinder 8 enters the second molecular sieve packed column 9 through the sixth electromagnetic valve 4, the nitrogen in the air is completely adsorbed by the second molecular sieve packed column 9 to obtain pure oxygen, and the pure oxygen passes through the tenth electromagnetic valve 15 and finally enters the tail gas purification device. The volume of the third cylinder 23 is gradually increased, which causes the air pressure in the third molecular sieve packed column 22 to be gradually reduced, so that the desorption of the adsorbed nitrogen is realized, and the desorbed nitrogen is enriched in the third cylinder 23 through the twelfth electromagnetic valve 18. The fourth cylinder 25 is already enriched with a large amount of nitrogen desorbed from the fourth molecular sieve packing column 26, and is compressed and discharged to the air as the working volume of the fourth cylinder 25 is gradually reduced. In this half-turn of the rotary motion, pure oxygen is generated for exhaust cleaning by the combined operation of the second cylinder 8 and the second molecular sieve packed column 9. Obviously, in the first 1/4 cycle, the eighth solenoid valve 12 may also be in a closed state.
In the second 1/4 period, the on-off state of each solenoid valve (dark color is on, light color is off) and the open state of the gas pipeline (dark color is on, light color is off) are as shown in fig. 3, only the seven solenoid valves of the second, fourth, seventh, ninth, twelfth, fourteenth and fifteenth are in the open state, and the rest of the solenoid valves are in the closed state. As can be seen from fig. 3, after being compressed, the air in the first cylinder 6 enters the first molecular sieve packing column 5 through the second electromagnetic valve 1, and after being completely adsorbed, the nitrogen in the air can be obtained as pure oxygen, and the pure oxygen passes through the ninth electromagnetic valve 14 and finally enters the exhaust gas purification device. The volume of the second cylinder 8 is gradually increased, so that the air pressure in the second molecular sieve packing column 9 is gradually reduced, desorption of the adsorbed nitrogen is realized, and the desorbed nitrogen is enriched in the second cylinder 8 through the seventh electromagnetic valve 13. The third cylinder 23 is already enriched with a large amount of nitrogen desorbed from the third molecular sieve packed column 22, and is compressed and discharged to the air as the working volume of the third cylinder is gradually reduced. The volume of the fourth cylinder 25 is gradually increasing and air gradually passes through the fifteenth solenoid valve 20 into the fourth cylinder. In this half-turn of the wheel motion, pure oxygen is generated for exhaust gas purification by the combined operation of the first cylinder 6 and the first molecular sieve packed column 5. Obviously, in this second 1/4 cycle, the fourth solenoid valve 11 may also be in a closed state.
In the third 1/4 period, the on-off state of each solenoid valve (dark color is on, light color is off) and the open state of the gas pipeline (dark color is on, light color is off) are as shown in fig. 4, only seven solenoid valves, namely the third, fifth, seventh, eleventh, fifteenth, seventeenth and twentieth solenoid valves are in the open state, and the rest of the solenoid valves are in the closed state. As can be seen from fig. 4, the volume of the first cylinder 6 is gradually increased, which causes the air pressure in the first molecular sieve packed column 5 to be gradually decreased, so that the desorption of the adsorbed nitrogen is realized, and the desorbed nitrogen is enriched in the first cylinder 6 through the third electromagnetic valve 10. The second cylinder 8, already enriched with a large amount of nitrogen desorbed by the second molecular sieve packed column 9, is compressed and discharged to the air as the working volume of the second cylinder gradually decreases. The volume of the third cylinder 23 is gradually increasing and air gradually passes through the eleventh solenoid valve 11 to enter the third cylinder 23. After being compressed, the air in the fourth cylinder 25 enters the fourth molecular sieve packed column 26 through the seventeenth electromagnetic valve 30, and after being completely adsorbed, the nitrogen in the air can obtain pure oxygen, and the pure oxygen finally enters the tail gas purification device through the twentieth electromagnetic valve 17. In this half-turn of the wheel motion, the fourth cylinder 25 and the fourth molecular sieve packing column 26 work in combination to generate pure oxygen for use in exhaust gas purification. Obviously, in the third 1/4 period, the fifteenth solenoid valve 20 may also be in a closed state.
In the fourth 1/4 period, the on-off state of each solenoid valve (dark color is on, light color is off) and the open state of the gas pipeline (dark color is on, light color is off) are as shown in fig. 5, only seven solenoid valves, i.e., the first, third, eighth, eleventh, thirteenth, sixteenth and nineteenth, are in the open state, and the rest of the solenoid valves are in the closed state. As can be seen from fig. 5, the first cylinder 6, which has been enriched with a large amount of nitrogen desorbed from the first molecular sieve packed column 5, is compressed and discharged to the air as the working volume of the first cylinder gradually decreases. The working volume of the second cylinder 8 is gradually increasing and air is gradually entering the second cylinder through the eighth solenoid valve 12. After being compressed, the air in the third cylinder 23 enters the second molecular sieve packing column 22 through the thirteenth electromagnetic valve 27, and after being completely adsorbed, the nitrogen in the air can obtain pure oxygen, and the pure oxygen finally enters the tail gas purification device through the nineteenth electromagnetic valve 16. The volume of the fourth cylinder 25 is gradually increased, which causes the air pressure in the fourth molecular sieve packing column 26 to be gradually reduced, so that the adsorbed nitrogen is desorbed, and the desorbed nitrogen is enriched in the fourth cylinder 25 through the sixteenth electromagnetic valve 21. In this half-turn wheel motion, the third cylinder 23 and the third molecular sieve packed column 22 work in combination to generate pure oxygen for use in exhaust gas purification. Obviously, in the fourth 1/4 period, the eleventh solenoid valve 19 may also be in the closed state.
In view of the above four 1/4 cycles, in the complete working cycle process, the sequence of the solenoid valves for oxygen output of the system is as follows: the tenth solenoid valve 15 → the ninth solenoid valve 14 → the twentieth solenoid valve 17 → the nineteenth solenoid valve 16, and repeatedly circulated in this order, whereby a continuous flow of pure oxygen for exhaust gas purification can be obtained.
From the above, it can be seen that the present embodiment uses two sets of parallel oxygen generation systems, each oxygen generation system includes a reciprocating air compressor with two cylinders, each cylinder is connected with one molecular sieve packing column through a gas pipeline, the whole system has four molecular sieve packing columns in total, and five electromagnetic valves are arranged corresponding to each molecular sieve packing column. With the rotation of the wheel shaft of the reciprocating air compressor and the periodic switching of the electromagnetic valve, the fact that one air cylinder outputs high-pressure air and enters the corresponding molecular sieve packing column during the rotation of the wheel shaft, the nitrogen component in the air cylinder is adsorbed to prepare pure oxygen, and a system formed by other air cylinders and the corresponding molecular sieve packing columns is respectively in a state that the air enters the air cylinder, the molecular sieve desorbs the nitrogen and enters the air cylinder, and the nitrogen in the air cylinder is compressed and then discharged can be achieved.
The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.

Claims (8)

1. The utility model provides a reciprocating type molecular sieve divides air generation oxygen system for automobile exhaust handles which characterized in that includes:
the reciprocating air compressor I comprises a first air cylinder (6), a second air cylinder (8) and an air cylinder driving device I (7) which is in transmission connection with air cylinder pistons in the first air cylinder (6) and the second air cylinder (8) so as to drive the air cylinder pistons to reciprocate, wherein the first air cylinder (6) is provided with an air suction opening and an air exhaust opening, and the second air cylinder (8) is provided with an air suction opening and an air exhaust opening; the first cylinder (6) can be selectively in an air exhaust state and the second cylinder (8) can be selectively in an air exhaust state, or the first cylinder (6) can be in an air exhaust state and the second cylinder (8) can be in an air exhaust state by the action of the cylinder driving device I (7);
the reciprocating air compressor II comprises a third air cylinder (23), a fourth air cylinder (25) and an air cylinder driving device II (24) which is in transmission connection with the air cylinder pistons in the third air cylinder (23) and the fourth air cylinder (25) so as to drive the air cylinder pistons to reciprocate, the third air cylinder (23) is provided with an air suction opening and an air exhaust opening, and the fourth air cylinder (25) is provided with an air suction opening and an air exhaust opening; the third cylinder (23) can be selectively in an air exhaust state and the fourth cylinder (25) can be selectively in an air exhaust state, or the third cylinder (23) can be selectively in an air exhaust state and the fourth cylinder (25) can be selectively in an air exhaust state by the action of the cylinder driving device II (24);
the device comprises a first electromagnetic valve (2), a second electromagnetic valve (1), a first molecular sieve packing column (5), a third electromagnetic valve (10) and a fourth electromagnetic valve (11) which are sequentially connected through a first air pipe, wherein the first air pipe between the first electromagnetic valve (2) and the second electromagnetic valve (1) is communicated with an exhaust port of a first air cylinder (6) through another air pipe, and the first air pipe between the third electromagnetic valve (10) and the fourth electromagnetic valve (11) is communicated with an air suction port of the first air cylinder (6) through another air pipe;
a fifth electromagnetic valve (3), a sixth electromagnetic valve (4), a second molecular sieve packing column (9), a seventh electromagnetic valve (13) and an eighth electromagnetic valve (12) which are sequentially connected through a second air pipe, wherein the second air pipe between the fifth electromagnetic valve (3) and the sixth electromagnetic valve (4) is communicated with an exhaust port of the second air cylinder (8) through another air pipe, and the second air pipe between the seventh electromagnetic valve (13) and the eighth electromagnetic valve (12) is communicated with an air suction port of the second air cylinder (8) through another air pipe;
a third air pipe, one end of which is communicated with the first air cylinder between the third electromagnetic valve (10) and the first molecular sieve packing column (5), and the other end of which is communicated with the second air pipe between the seventh electromagnetic valve (13) and the second molecular sieve packing column (9);
a ninth electromagnetic valve (14) and a tenth electromagnetic valve (15) connected to the third air pipe;
an eleventh electromagnetic valve (19), a twelfth electromagnetic valve (18), a third molecular sieve packing column (22), a thirteenth electromagnetic valve (27) and a fourteenth electromagnetic valve (28) which are connected in sequence through a fourth air pipe, wherein the fourth air pipe between the eleventh electromagnetic valve (19) and the twelfth electromagnetic valve (18) is communicated with an air suction opening of the third air cylinder (23) through another air pipe, and the fourth air pipe between the thirteenth electromagnetic valve (27) and the fourteenth electromagnetic valve (28) is communicated with an air exhaust opening of the third air cylinder (23) through another air pipe;
a fifteenth electromagnetic valve (20), a sixteenth electromagnetic valve (21), a fourth molecular sieve packing column (26), a seventeenth electromagnetic valve (30) and an eighteenth electromagnetic valve (29) which are sequentially connected through a fifth air pipe, wherein the fifth air pipe between the fifteenth electromagnetic valve (20) and the sixteenth electromagnetic valve (21) is communicated with an air suction port of the fourth cylinder (25) through another air pipe, and the fifth air pipe between the seventeenth electromagnetic valve (30) and the eighteenth electromagnetic valve (29) is communicated with an air exhaust port of the fourth cylinder (25) through another air pipe;
a sixth air pipe, one end of which is communicated with the fourth air cylinder between the twelfth electromagnetic valve (18) and the third molecular sieve packing column (22), and the other end of which is communicated with the fifth air pipe between the sixteenth electromagnetic valve (21) and the fourth molecular sieve packing column (26);
a nineteenth electromagnetic valve (16) and a twentieth electromagnetic valve (17) which are connected to the sixth air pipe;
one end of the seventh air pipe is communicated with the third air pipe between the ninth electromagnetic valve (14) and the tenth electromagnetic valve (15), and the other end of the seventh air pipe is communicated with an automobile exhaust purification device; and
and one end of the eighth air pipe is communicated with the sixth air pipe between the nineteenth electromagnetic valve (16) and the twentieth electromagnetic valve (17), and the other end of the eighth air pipe is communicated with an automobile exhaust purification device.
2. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to claim 1, wherein the cylinder driving device I (7) comprises:
a rotating wheel capable of performing pivoting motion around the axis of the rotating wheel,
a first slide block and a second slide block which can transversely move left and right,
one end of the first connecting rod is hinged on the first sliding block, and the other end of the first connecting rod is hinged on the rotating wheel;
one end of the second connecting rod is hinged on the second sliding block, and the other end of the second connecting rod is hinged on the rotating wheel;
a third connecting rod connected between the piston of the first cylinder and the first slider, an
And the fourth connecting rod is connected between the piston of the second cylinder and the second sliding block.
3. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment according to claim 2, wherein the hinge point of the first connecting rod and the rotating wheel is located on the outer edge of the rotating wheel, and the hinge point of the second connecting rod and the rotating wheel is located on the outer edge of the rotating wheel.
4. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to claim 3, wherein the first connecting rod and the second connecting rod are hinged at the same position of the rotating wheel.
5. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to claim 2, wherein the pivoting motion of the rotating wheel is driven by an electric motor.
6. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment according to claim 5, further comprising an intelligent controller, wherein the motor, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the sixth solenoid valve, the seventh solenoid valve, the eighth solenoid valve, the ninth solenoid valve, the tenth solenoid valve, the eleventh solenoid valve, the twelfth solenoid valve, the thirteenth solenoid valve, the fourteenth solenoid valve, the fifteenth solenoid valve, the sixteenth solenoid valve, the seventeenth solenoid valve, the eighteenth solenoid valve, the nineteenth solenoid valve and the twentieth solenoid valve are electrically connected with the intelligent controller.
7. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to claim 1, wherein the molecular sieves filled in the first molecular sieve filled column (5), the second molecular sieve filled column (9), the third molecular sieve filled column (22) and the fourth molecular sieve filled column (26) are all lithium type molecular sieves.
8. The reciprocating molecular sieve air separation oxygen generation system for automobile exhaust gas treatment according to claim 1, wherein the seventh gas pipe and the eighth gas pipe have a common pipe section leading to the exhaust gas purification device.
CN201710160971.6A 2017-03-17 2017-03-17 Reciprocating molecular sieve air separation oxygen generation system for automobile exhaust treatment Active CN106946226B (en)

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Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
JP2735723B2 (en) * 1992-01-08 1998-04-02 神鋼パンテツク株式会社 Method for producing high-purity oxygen and hydrogen
KR20040094515A (en) * 2003-05-02 2004-11-10 도우넷테크 주식회사 An integrated system of both air dispersion valve and molecular sieve beds for oxygen generator
CN1202384C (en) * 2003-05-28 2005-05-18 林楼飞 Indoor air-collecting and outdoor oxygen generating method and its split oxygen generator
CN101450792A (en) * 2007-12-06 2009-06-10 中国科学院大连化学物理研究所 Method for preparing oxygen and nitrogen by air separation
CN101549629B (en) * 2008-03-31 2012-05-23 朱航海 Oxygen preparing and supplying system for automobiles
CN201606166U (en) * 2010-02-20 2010-10-13 吴广祥 Automobile tail gas recycling device
CN102373990A (en) * 2010-08-09 2012-03-14 林鹰良 Automobile exhaust gas purifier and method for purifying automobile exhaust gas
CN106365123B (en) * 2016-08-27 2018-04-17 成都联帮医疗科技股份有限公司 A kind of list lobe pump double acting medical molecular sieve oxygen generation system and method for producing oxygen through
CN206985702U (en) * 2017-03-17 2018-02-09 苏州思美特表面材料科技有限公司 A kind of reciprocating molecular sieve making oxygen by air separation system for vehicle maintenance service

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