CN209791209U - desorption gas collecting and utilizing device - Google Patents
desorption gas collecting and utilizing device Download PDFInfo
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- CN209791209U CN209791209U CN201920180866.3U CN201920180866U CN209791209U CN 209791209 U CN209791209 U CN 209791209U CN 201920180866 U CN201920180866 U CN 201920180866U CN 209791209 U CN209791209 U CN 209791209U
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Abstract
The utility model discloses a desorption gas is collected and is utilized device, include: the system comprises a nitrogen making machine, a connecting pipeline, a storage tank, a transmission pipeline, a fan, an oxygen purity analyzer, a pneumatic valve and a flowmeter; the storage tank is connected with the nitrogen making machine through a connecting pipeline, one end of the storage tank is connected with an exhaust port of the nitrogen making machine, and the other end of the storage tank is connected with an air inlet of the fan; the connecting pipeline is provided with a three-way valve, a one-way valve and a vacuum pump, the one-way valve is arranged between the three-way valve and the vacuum pump, the three-way valve is arranged at one end of the connecting pipeline close to the nitrogen making machine, and the vacuum pump is arranged at one end of the connecting pipeline close to the storage tank; the transmission pipeline is connected at the gas outlet of storage jar, and fan, oxygen purity analyzer, pneumatic valve and flowmeter set gradually on the transmission pipeline, and the fan setting is close to the one end of storage jar on the transmission pipeline. In this way, the utility model discloses can collect the desorption gas that produces in the nitrogen generator to carry out recycle, resources are saved to the desorption gas.
Description
Technical Field
The utility model relates to a waste gas recycle technical field especially relates to a desorption gas is collected and is utilized device.
Background
The pressure swing adsorption nitrogen production (PSA gas separation nitrogen production) technology is an advanced nitrogen production process which is widely applied to the fields of medical treatment, food, steel making, chemical industry, electronics and the like in recent years. The main components of air are nitrogen and oxygen, wherein the content of nitrogen is about 78%, the content of oxygen is about 21%, the nitrogen preparation technology by pressure swing adsorption takes air as raw material, carbon molecular sieve is used for selectively adsorbing nitrogen and oxygen under specific pressure, and the cycle period of pressure adsorption and pressure reduction desorption is adopted, so that compressed air alternately enters an adsorption tower to realize air separation, thereby separating nitrogen from air and realizing the method for continuously producing nitrogen. It has the advantages of energy saving, no pollution, good flexibility, high nitrogen making purity, wide application and the like.
The air-nitrogen ratio of the existing pressure swing adsorption nitrogen making technology is about 4:1, three cubes of desorption gas are discharged into the air when one cube of nitrogen is generated, the oxygen content is about 30%, the gas is directly discharged into the air without recycling, and resource waste is caused to a certain extent. In the lime procedure of soda plant, pure oxygen and air are mixed according to a certain proportion and then used as combustion-supporting gas, and the mixture is sent into a lime kiln by a blower, and the pure oxygen needs to be purchased externally, so that the cost is high. The soda plant has a nitrogen making machine with large gas volume, the generated oxygen-enriched desorption gas is directly discharged into the air, but is not recycled, so that the resource waste is caused, and the oxygen content in the desorption gas generated by the pressure swing adsorption nitrogen making process is consistent with the oxygen content in the combustion-supporting gas required in the lime procedure.
SUMMERY OF THE UTILITY MODEL
the utility model discloses the main technical problem who solves provides a desorption gas is collected and is utilized device, can collect the utilization to the desorption gas that produces in the nitrogen generator, has practiced thrift the resource greatly.
In order to achieve the above object, the technical solution of the present invention is:
A desorption gas collection and utilization device comprising: the system comprises a nitrogen making machine, a connecting pipeline, a storage tank, a transmission pipeline, a fan, an oxygen purity analyzer, a pneumatic valve and a flowmeter;
The storage tank is connected with the nitrogen making machine through the connecting pipeline, one end of the storage tank is connected with an exhaust port of the nitrogen making machine, and the other end of the storage tank is connected with an air inlet of the fan; the connecting pipeline is provided with a three-way valve, a one-way valve and a vacuum pump, the one-way valve is arranged between the three-way valve and the vacuum pump, the three-way valve is arranged at one end, close to the nitrogen making machine, of the connecting pipeline, and the vacuum pump is arranged at one end, close to the storage tank, of the connecting pipeline;
the transmission pipeline is connected with the air outlet of the storage tank, the fan, the oxygen purity analyzer, the pneumatic valve and the flowmeter are sequentially arranged on the transmission pipeline, and the fan is arranged at one end, close to the storage tank, of the transmission pipeline;
The fan comprises an outer cylinder, an inner cylinder, a motor and blades, wherein the blades are arranged on an output shaft of the motor, the motor is arranged in the outer cylinder, the inner cylinder coats a machine body of the motor, an air exhaust fan blade is arranged on a tail shaft of the motor, an exhaust pipe led in from the outer cylinder is arranged on the inner cylinder, and an air inlet pipe corresponding to the air exhaust fan blade is arranged on the inner cylinder; the wall of the inner cylinder is provided with a hollow interlayer, and the interlayer is filled with heat insulation materials.
preferably, the air inlet pipe comprises an air inlet pipe body and a connecting flange, the air inlet pipe body is arranged at the axis of the connecting flange, and the air inlet pipe body penetrates through the outer cylinder and is communicated with the outside.
Preferably, the heat insulation material is made of high-temperature cotton.
Preferably, the vacuum pump is a rotary vane vacuum pump.
Preferably, the vacuum pump comprises a pump body, an air inlet pipe and an air outlet pipe, the bottom of the pump body is fixed through a fixing frame, and the air inlet pipe and the air outlet pipe are respectively arranged on two sides of the top of the pump body; the oil inlet is arranged at the top of the pump body and located between the air inlet pipe and the exhaust pipe, an oil outlet is arranged on one side of the bottom of the pump body, a closed cavity is formed inside the pump body, a rotor is arranged in the closed cavity, and a rotary vane is arranged on the rotor.
Preferably, the rotor is an eccentric rotor, the rotor plate is fixed on the rotor at equal angles, and the width of the rotor plate far away from the end of the rotor is smaller than that of the rotor plate close to the end of the rotor.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model has the following beneficial effect:
The utility model provides a desorption gas is collected and is utilized device collects the desorption gas that produces in the nitrogen generator to can directly use the desorption gas that collects in the industrial equipment that needs the oxygen content to be about 30% gaseous, with the industrial equipment directly be connected with the transmission pipeline, carry out recycle to desorption gas, practice thrift the resource greatly.
Drawings
Fig. 1 is a schematic view of a desorption gas collecting and utilizing device of the present invention.
Fig. 2 is a schematic view of a fan in the desorption gas collecting and utilizing device of the present invention.
Fig. 3 is a schematic view of a vacuum pump in the desorption gas collecting and utilizing device of the present invention.
Description of reference numerals:
The system comprises a nitrogen making machine 1, a connecting pipeline 2, a storage tank 3, a transmission pipeline 4, a fan 5, an outer cylinder 51, an inner cylinder 52, an interlayer 521, a heat insulating material 522, a motor 53, blades 54, air pumping fan blades 55, an air inlet pipe 56, an air inlet pipe body 561, a connecting flange 562, an exhaust pipe 57, an oxygen purity analyzer 6, a pneumatic valve 7, a flow meter 8, a three-way valve 9, a one-way valve 10, a vacuum pump 11, a pump body 111, a fixing frame 112, an air inlet pipe 113, an air outlet pipe 114, an oil inlet 115, an oil outlet 116, a closed cavity 117, a rotor 118, a rotary vane 119, a DCS system.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to the attached drawings, the desorption gas collecting and utilizing device comprises a nitrogen making machine 1, a connecting pipeline 2, a storage tank 3, a transmission pipeline 4, a fan 5, an oxygen purity analyzer 6, a pneumatic valve 7 and a flowmeter 8.
storage jar 3 passes through connecting tube 2 with nitrogen generator 1 and is connected, and the gas vent at nitrogen generator 1 is connected to the one end of storage jar 3, and the air inlet at fan 5 is connected to the other end of storage jar 3. Be provided with three-way valve 9, check valve 10 and vacuum pump 11 on the connecting tube 2, check valve 10 sets up between three-way valve 9 and vacuum pump 11, and three-way valve 9 sets up the one end that is close to nitrogen generator 1 on connecting tube 2, and vacuum pump 11 sets up the one end that is provided with near storage jar 3 on connecting tube 2.
The exhaust port of the nitrogen making machine 1 is connected with a three-way valve 9 through a connecting pipeline, and desorption gas can be manually emptied through the three-way valve 9 in a non-working state or when the pressure of the storage tank 3 reaches a set value. Then connect check valve 10, guarantee that the desorption gas can not flow back, connect vacuum pump 11 again, vacuum pump 11 can be with the desorption gas suction storage jar 3, can make the regeneration adsorption tower in the nitrogen generator 1 be in the negative pressure state simultaneously, has further improved the purity of nitrogen generator 1.
The transmission pipeline 4 is connected at the gas outlet of storage jar 3, and fan 5, oxygen purity analyzer 6, pneumatic valve 7 and flowmeter 8 set gradually on transmission pipeline 4, and fan 5 sets up the one end that is close to storage jar 3 on transmission pipeline 4. The desorption gas is enriched and stored in the storage tank 3, and finally the desorption gas meeting the requirement is introduced into the lime kiln 13 through the fan 5 according to the requirement. An oxygen purity detector 6, a pneumatic valve 7 and a flowmeter 8 are added on the connecting pipeline 2, and the oxygen purity analyzer 6 is an oxygen content detector to detect the purity and the flow rate of the desorption gas entering the lime kiln 13 and control the on-off of the desorption gas entering the lime kiln 13 through the pneumatic valve 7.
The fan 5 comprises an outer cylinder 51, an inner cylinder 52, a motor 53 and blades 54, wherein the blades 54 are arranged on an output shaft of the motor 53, the motor 53 is arranged in the outer cylinder 51, the inner cylinder 52 covers the body of the motor 53, the tail shaft of the motor 53 is provided with air suction blades 55, the inner cylinder 52 is provided with an exhaust pipe 57 led in by the outer cylinder 51, and the inner cylinder 52 is provided with an air inlet pipe 56 corresponding to the air suction blades 55; the inner cylinder 52 has a hollow interlayer 521 formed on the wall thereof, and the interlayer 521 is filled with a heat insulating material 522. Preferably, the heat insulating material 522 is made of high temperature cotton. The inlet pipe 56 includes an inlet pipe body 561 and a connecting flange 562, the inlet pipe body 561 is disposed at the axis of the connecting flange 562, and the inlet pipe body 561 penetrates the outer cylinder 51 to communicate with the outside.
When the fan 5 works, the main shaft of the motor 53 rotates, the blades 54 and the air extracting blades 55 on the main shaft rotate simultaneously, and when the fan 5 performs air extraction and exhaust, the air extracting blades 55 on the motor 53 also perform cold air extraction, and the cold air enters the inner cylinder 52 from the air inlet pipe 56 and is exhausted out of the fan 5 from the air outlet pipe 57 on the inner cylinder 52, so that the motor 53 is protected from cooling. In addition, the hollow interlayer 521 on the wall of the inner cylinder 52 is filled with a heat insulating material 522, so that the influence of the heat of the working environment on the motor 53 is avoided.
the vacuum pump 11 may be a rotary vane 119 type vacuum pump 11. The vacuum pump 11 comprises a pump body 111, an air inlet pipe 113 and an air outlet pipe 114, wherein the bottom of the pump body 111 is fixed through a fixing frame 112, and the air inlet pipe 113 and the air outlet pipe 114 are respectively arranged on two sides of the top of the pump body 111; an oil inlet 115 is further formed in the top of the pump body 111, the oil inlet 115 is located between the air inlet pipe 113 and the exhaust pipe 57, an oil outlet 116 is formed in one side of the bottom of the pump body 111, a closed cavity 117 is formed inside the pump body 111, a rotor 118 is arranged in the closed cavity 117, and a rotary vane 119 is arranged on the rotor 118. The rotor 118 is an eccentric rotor 118, the rotor blades 119 are fixed on the rotor 118 at equal angles, and the width of the rotor blades 119 far away from the end of the rotor 118 is smaller than that of the rotor blades 118 close to the end of the rotor, so that the rotor blades are not easy to break. Can have the high-molecular composite material that coats respectively with airtight cavity 117 inner wall on the vortex piece 119, prevent to corrode, increase life, overall structure is simple, convenient operation reduces the input of cost, convenient to popularize and use.
The air enters a nitrogen making machine 1 after being treated, nitrogen meeting the purity requirement is obtained after selective adsorption of a carbon molecular sieve in the nitrogen making machine 1, and the nitrogen enters a nitrogen storage tank and is sent to a gas using point. The clean and dry oxygen-enriched desorption gas with the oxygen concentration of about 30 percent generated in the working process of the nitrogen making machine 1 is discharged into the air through the decompression desorption process, and the discharge characteristics of the desorption gas are uneven pressure, non-linearity and uneven concentration, so the oxygen-enriched desorption gas is difficult to recover and cannot be directly used. The utility model discloses it increases three-way valve 9, check valve 10 and vacuum pump 11 to desorb the gas through connecting tube 2 at 1 desorption gas vents of nitrogen generator, and the storage jar 3 is deposited to the gas of will desorbing, makes the gas of desorbing become linear, can stably carry the application. After the pressure in the storage tank 3 has stabilized, the desorption gas in the storage tank 3 is passed by a fan 5 into an industrial plant, such as a lime kiln 13, according to the production requirements. An oxygen purity analyzer 6, a pneumatic valve 7 and a flowmeter 8 are arranged on a transmission pipeline behind the fan 5 and connected to a DCS (distributed control system) 12, so that the oxygen concentration in the desorbed gas and the flow change of the desorbed gas are detected in real time, the opening of the pneumatic valve 7 is automatically adjusted according to needs, and the effective utilization of the desorbed gas is ensured.
the above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (6)
1. A desorption gas collection and utilization device, comprising: the system comprises a nitrogen making machine, a connecting pipeline, a storage tank, a transmission pipeline, a fan, an oxygen purity analyzer, a pneumatic valve and a flowmeter;
The storage tank is connected with the nitrogen making machine through the connecting pipeline, one end of the storage tank is connected with an exhaust port of the nitrogen making machine, and the other end of the storage tank is connected with an air inlet of the fan; the connecting pipeline is provided with a three-way valve, a one-way valve and a vacuum pump, the one-way valve is arranged between the three-way valve and the vacuum pump, the three-way valve is arranged at one end, close to the nitrogen making machine, of the connecting pipeline, and the vacuum pump is arranged at one end, close to the storage tank, of the connecting pipeline;
The transmission pipeline is connected with the air outlet of the storage tank, the fan, the oxygen purity analyzer, the pneumatic valve and the flowmeter are sequentially arranged on the transmission pipeline, and the fan is arranged at one end, close to the storage tank, of the transmission pipeline;
The fan comprises an outer cylinder, an inner cylinder, a motor and blades, wherein the blades are arranged on an output shaft of the motor, the motor is arranged in the outer cylinder, the inner cylinder coats a machine body of the motor, an air exhaust fan blade is arranged on a tail shaft of the motor, an exhaust pipe led in from the outer cylinder is arranged on the inner cylinder, and an air inlet pipe corresponding to the air exhaust fan blade is arranged on the inner cylinder; the wall of the inner cylinder is provided with a hollow interlayer, and the interlayer is filled with heat insulation materials.
2. The desorption gas collecting and utilizing device according to claim 1, wherein: the air inlet pipe comprises an air inlet pipe body and a connecting flange, the air inlet pipe body is arranged at the axis of the connecting flange, and the air inlet pipe body penetrates through the outer barrel and is communicated with the outside.
3. The desorption gas collecting and utilizing device according to claim 1, wherein: the heat insulation material is made of high-temperature cotton.
4. The desorption gas collecting and utilizing device according to claim 1, wherein: the vacuum pump is a rotary vane vacuum pump.
5. The desorption gas collecting and utilizing device according to claim 1, wherein: the vacuum pump comprises a pump body, an air inlet pipe and an air outlet pipe, wherein the bottom of the pump body is fixed through a fixing frame, and the air inlet pipe and the air outlet pipe are respectively arranged on two sides of the top of the pump body; the oil inlet is arranged at the top of the pump body and located between the air inlet pipe and the exhaust pipe, an oil outlet is arranged on one side of the bottom of the pump body, a closed cavity is formed inside the pump body, a rotor is arranged in the closed cavity, and a rotary vane is arranged on the rotor.
6. The desorption gas collection and utilization device according to claim 5, wherein: the rotor is an eccentric rotor, the rotor plate is fixed on the rotor at equal angles, and the width of the rotor plate far away from the rotor end is smaller than that of the rotor end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180866.3U CN209791209U (en) | 2019-02-01 | 2019-02-01 | desorption gas collecting and utilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180866.3U CN209791209U (en) | 2019-02-01 | 2019-02-01 | desorption gas collecting and utilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209791209U true CN209791209U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920180866.3U Active CN209791209U (en) | 2019-02-01 | 2019-02-01 | desorption gas collecting and utilizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209791209U (en) |
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2019
- 2019-02-01 CN CN201920180866.3U patent/CN209791209U/en active Active
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