Waste gas treatment device for methanol-to-hydrogen

Abstract

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device for methanol-to-hydrogen, which comprises a treatment tower, the front end of the treatment tower is provided with vertically opposite observation windows, the inner side of the observation window at the upper end is provided with a gas inlet pipe, and the rear side of the bottom end of the gas inlet pipe is fixedly connected with a breather pipe. A cooling pipe is fixedly connected to the outer side of the ventilation pipe, a connecting pipe is fixedly connected to the bottom side of the top end of the cooling pipe, a conveying assembly is arranged at the bottom end of the connecting pipe, a flow dividing pipe is fixedly connected to the inner side of the bottom end of the cooling pipe, and a heat dissipation assembly is arranged at the bottom end of the flow dividing pipe. According to the waste gas treatment device for methanol-to-hydrogen provided by the utility model, waste gas on the inner side of the breather pipe is cooled by cooling liquid, so that the device is protected, the service life is prolonged, the thermal stress and corrosion of high temperature to the device are reduced, the thermal load of a subsequent treatment system can be reduced by cooling, and the overheating fault of the device is avoided; and the risk of flammable and explosive gas is reduced, and the operation safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste gas treatment technical field, concretely is a kind of waste gas treatment device for methanol hydrogen production. BACKGROUND

[0002] Methanol hydrogen production technology is widely concerned due to its high hydrogen production rate, simple process and low cost, but the waste gas (such as CO, CO2, unreacted methanol and hydrogen, etc.) generated in the hydrogen production process poses a threat to the environment and safety, so the waste gas treatment device is of great significance. The device needs to realize efficient removal of CO and unreacted methanol for complex gas components, reduce CO2 emissions, and recover hydrogen and heat energy to improve energy utilization efficiency. The presence of flammable and explosive gases in waste gas requires the device to have explosion-proof design and safety monitoring function, and attention should be paid to equipment integration and cost control to improve economy. The existing technology includes catalytic oxidation, adsorption separation, membrane separation and combustion recovery, among which catalytic oxidation and membrane separation are concerned due to high efficiency and energy recovery potential. The development of methanol hydrogen production waste gas treatment device is of great importance to improve the sustainability of hydrogen production technology and the clean development of hydrogen energy.

[0003] However, in the actual use process of the existing scheme, the waste gas generated in the methanol hydrogen production process does contain a certain amount of heat. This is because in the methanol reforming (such as steam reforming or partial oxidation) process, there will be an exothermic reaction, which will generate a certain amount of heat, which will accelerate the corrosion of the equipment and the failure of the seal, reduce the efficiency of the catalyst and the adsorption material, increase the energy consumption and damage the heat recovery system. In addition, high temperature will increase the thermal stress of the equipment and increase the safety risk, especially for the treatment of flammable and explosive gases.

[0004] Therefore, the utility model provides a kind of waste gas treatment device for methanol hydrogen production. UTILITY MODEL CONTENT

[0005] In order to make up for the shortcomings of the prior art and solve the problem that the heat in the waste gas will increase the thermal stress of the equipment and increase the safety risk, the utility model provides a kind of waste gas treatment device for methanol hydrogen production.

[0006] The utility model solves the technical scheme adopted for its technical problems: the utility model discloses a kind of waste gas treatment device for methanol hydrogen production, including processing tower, the processing tower front end is equipped with the observation window opposite up and down, the observation window inboard is provided with inlet pipe in upper end, the inlet pipe bottom end rear side is fixedly connected with air pipe, the air pipe outer side is fixedly connected with cooling pipe, the cooling pipe top end bottom side is fixedly connected with connecting pipe, the connecting pipe bottom end is provided with conveying assembly, the cooling pipe bottom end inboard is fixedly connected with shunt pipe, the shunt pipe bottom end is provided with heat dissipation component, the air pipe bottom end left side is fixedly connected with outlet pipe, the outlet pipe left side is provided with outlet assembly.

[0007] Further, the conveying assembly comprises a conveying pump, the left side of the bottom end of the connecting pipe is fixedly connected with the conveying pump, the left side of the outer end of the conveying pump is fixedly connected with a water pumping pipe, and the top end of the water pumping pipe is fixedly connected with a converging pipe.

[0008] Further, the heat dissipation assembly comprises a heat dissipation box, the top end of the converging pipe is fixedly connected with the heat dissipation box, a communication hole is arranged in the heat dissipation box, the communication hole is communicated with the converging pipe, a plurality of evenly distributed ventilation holes are arranged on the outer wall of the heat dissipation box, and the top end of the communication hole is communicated with the diverging pipe.

[0009] Further, the air outlet assembly comprises a first diverging ring, the right side of the diverging pipe is fixedly connected with the first diverging ring, and the inner side of the first diverging ring is fixedly connected with a plurality of evenly distributed air outlet nozzles.

[0010] Further, the processing tower is provided with a plurality of evenly distributed air outlets at the bottom of the front end, the inner side of the air outlet is fixedly connected with an exhaust fan, and the bottom end of the rear side of the processing tower is provided with a protective net.

[0011] Further, the inner side of the top end of the processing tower is fixedly connected with a second diverging ring, the inner side of the second diverging ring is fixedly connected with a plurality of evenly distributed spray heads, and the front side of the middle end of the processing tower is fixedly connected with a drain pipe.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1.The waste gas treatment device for methanol hydrogen production, through the air inlet pipe, the waste gas is conveyed into the air pipe, and the cooling liquid stored in the gap between the cooling pipe and the air pipe is used for cooling the waste gas on the inner side of the air pipe, which helps to protect the equipment, prolongs the service life, reduces the thermal stress and corrosion of the equipment caused by high temperature, improves the activity and stability of the catalyst, and improves the waste gas treatment efficiency.

[0014] 2.The waste gas treatment device for methanol hydrogen production, through the exhaust fan, the air in the ventilation hole and the communication hole is replaced by the cooling liquid, and then the air is discharged and discharged into the external heat exchanger, the heat is replaced and collected, and then the cooling liquid is conveyed back to the gap between the cooling pipe and the air pipe by the conveying assembly, so as to realize the circulating cooling of the waste gas on the inner side of the cooling pipe, effectively control the temperature of the waste gas, improve the waste gas treatment efficiency of methanol hydrogen production, prolong the service life of the equipment, and reduce the energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described in connection with the drawings.

[0016] Figure 1It is a three-dimensional structure schematic diagram in the utility model;

[0017] Figure 2 It is a section structure schematic diagram and an enlarged view of the processing tower in the utility model;

[0018] Figure 3 It is a three-dimensional structure schematic diagram and an enlarged view of the utility model in the local part; Figure 1

[0019] Figure 4 It is a section structure schematic diagram of the heat dissipation box in the utility model;

[0020] Figure 5 It is a three-dimensional structure schematic diagram and an enlarged view of the utility model in the local part; Figure 2

[0021] Figure 6 It is a three-dimensional structure schematic diagram and an enlarged view of the utility model in the local part; Figure 3

[0022] Figure 7 It is a three-dimensional structure schematic diagram and an enlarged view of the utility model in the local part; Figure 4

[0023] In the drawing: 1, processing tower; 11, observation window; 12, gas outlet; 13, exhaust fan; 14, protective net; 2, heat dissipation box; 21, ventilation hole; 22, communication hole; 23, confluence pipe; 24, conveying pump; 25, water suction pipe; 26, connecting pipe; 27, shunt pipe; 3, cooling pipe; 31, air pipe; 4, air inlet pipe; 41, air outlet pipe; 42, first shunt ring; 43, air outlet nozzle; 5, second shunt ring; 51, shower head; 52, sewer pipe. Specific implementation

[0024] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0025] Example one:

[0026] As Figures 1 to 7 ​​​​The utility model discloses a waste gas treatment device for hydrogen production of methanol, including processing tower 1, the upper and lower opposite observation window 11 of processing tower 1 front end is set up, the inboard of upper end observation window 11 is provided with air inlet pipe 4, the inboard of observation window 11 is provided with glass, and air inlet pipe 4 is fixed in the inboard of top observation window 11, and the inside condition of processing tower 1 can be observed through observation window 11, the bottom end rear side of air inlet pipe 4 is fixedly connected with the breather pipe 31, air inlet pipe 4 is fixed to breather pipe 31, the breather pipe 31 outside is fixedly connected with cooling pipe 3, and cooling pipe 3 is fixed to breather pipe 31, and the gap between cooling pipe 3 and breather pipe 31 is left for cooling fluid flow, the bottom side of cooling pipe 3 top end is fixedly connected with connecting pipe 26, and cooling pipe 3 is fixed to connecting pipe 26, and the bottom end of connecting pipe 26 is provided with conveying assembly, the inboard of cooling pipe 3 bottom end is fixedly connected with shunt pipe 27, and cooling pipe 3 is fixed to shunt pipe 27, and the bottom end of shunt pipe 27 is provided with heat dissipation assembly, the left side of breather pipe 31 bottom end is fixedly connected with the air outlet pipe 41, and breather pipe 31 is fixed to air outlet pipe 41, and the left side of air outlet pipe 41 is provided with air outlet assembly, and the waste gas that comes in through air inlet pipe 4 enters the breather pipe 31, and is conveyed into the air outlet pipe 41 through breather pipe 31, and then the cooled waste gas is conveyed into the air outlet assembly through air outlet pipe 41.

[0027] Conveying assembly includes delivery pump 24, and the left side of the bottom end of connecting pipe 26 is fixedly connected with delivery pump 24, and connecting pipe 26 is fixed to delivery pump 24, and the left side of the outer end of delivery pump 24 is fixedly connected with water suction pipe 25, and delivery pump 24 is fixed to water suction pipe 25, and water suction pipe 25 top end is fixedly connected with the confluence pipe 23, and water suction pipe 25 is supported and fixed to the confluence pipe 23.

[0028] Heat dissipation assembly includes heat dissipation box 2, and the top end of the confluence pipe 23 is fixedly connected with heat dissipation box 2, and heat dissipation box 2 is fixed to the confluence pipe 23, and the inside of heat dissipation box 2 is provided with the communication hole 22, and the communication hole 22 is communicated with the confluence pipe 23, and the outer wall of heat dissipation box 2 is provided with the evenly distributed vent hole 21, and the top end of communication hole 22 is communicated with shunt pipe 27, and the confluence pipe 23 is connected by delivery pump 24 using water suction pipe 25, and the cooling fluid in the inside of communication hole 22 is extracted by delivery pump 24 using water suction pipe 25 and confluence pipe 23, and then the cooling fluid is conveyed into cooling pipe 3 by delivery pump 24 using connecting pipe 26, and the waste gas in the breather pipe 31 is cooled in the gap of the breather pipe 31 outside.

[0029] The air outlet assembly comprises a first shunt ring 42, the right side of the shunt pipe 27 is fixedly connected with the first shunt ring 42, the first shunt ring 42 is fixed through the shunt pipe 27, the inner side of the first shunt ring 42 is fixedly connected with uniformly distributed air outlet nozzles 43, the air outlet nozzles 43 are fixed through the first shunt ring 42, the waste gas conveyed by the shunt pipe 27 is shunted through the first shunt ring 42, and is sprayed out through the air outlet nozzles 43.

[0030] The bottom of the front end of the treatment tower 1 is provided with uniformly distributed air outlets 12, the inner side of the air outlet 12 is fixedly connected with an exhaust fan 13, the exhaust fan 13 is fixed through the air outlet 12, the rear side of the exhaust fan 13 is communicated with the ventilation hole 21, so that the hot air in the inner side of the ventilation hole 21 can be extracted and conveyed out through the exhaust fan 13, the bottom of the rear side of the treatment tower 1 is provided with a protective net 14, the internal heat dissipation box 2 is protected through the protective net 14, and cold air is supplemented into the ventilation hole 21 through the protective net 14.

[0031] The inner top of the treatment tower 1 is fixedly connected with a second shunt ring 5, the second shunt ring 5 is fixed through the treatment tower 1, the inner side of the second shunt ring 5 is fixedly connected with uniformly distributed spray heads 51, the spray heads 51 are fixed through the second shunt ring 5, the lower water pipe 52 is fixedly connected to the front side of the middle end of the treatment tower 1, the lower water pipe 52 is fixed through the treatment tower 1, the spraying liquid conveyed into the second shunt ring 5 is atomized and sprayed out through the spray heads 51, the spraying liquid forms a large number of gas-liquid contact surfaces in the waste gas, the contact area of the gas and the liquid is increased, and the pollutant removal efficiency is improved.

[0032] Working Principle: During operation of the methanol-to-hydrogen waste gas treatment unit, waste gas is first conveyed into the ventilation pipe 31 through the inlet pipe 4. Then, the waste gas enters the diversion pipe 27 through the ventilation pipe 31 and is conveyed into the first diversion ring 42 through the diversion pipe 27. Finally, the waste gas is evenly conveyed into the treatment tower 1 through the outlet nozzle 43. During this process, the waste gas in the ventilation pipe 31 is cooled by the coolant stored between the cooling pipe 3 and the ventilation pipe 31. After the coolant is heated, the coolant is drawn from the inside of the connecting hole 22 by the delivery pump 24 through the pumping pipe 25 and the manifold 23, and then conveyed into the gap between the cooling pipe 3 and the ventilation pipe 31 through the connecting pipe 26, thereby cooling the ventilation pipe 31. The heated coolant then flows through… The coolant is returned to the connecting hole 22 via the diverter pipe 27, where the heat in the coolant is exchanged with the heat on the inner wall of the ventilation hole 21. Simultaneously, the cool air inside the ventilation hole 21 exchanges with the heat on its inner wall. The hot air is then extracted by the exhaust fan 13, and cool air is continuously supplied to the ventilation hole 21 through the protective net 14 to cool the inner wall of the connecting hole 22, thus cooling the coolant in the connecting hole 22. After the exhaust gas is delivered by the exhaust nozzle 43, the spray liquid is pumped into the second diverter ring 5 by an external water pump. The second diverter ring 5 then diverts the spray liquid into the spray nozzle 51, where it is atomized and sprayed out, increasing the contact area between the gas and the liquid, thereby improving the pollutant removal efficiency.

[0033] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for hydrogen production from methanol, characterized by comprising: The utility model relates to a processing tower, processing tower (1) front end is equipped with the observation window (11) that is opposite up and down, and the observation window (11) inboard is equipped with the air inlet pipe (4) in upper end, and the air inlet pipe (4) bottom end rear side fixedly connected with the air pipe (31), and the air pipe (31) outside fixedly connected with the cooling pipe (3), and the cooling pipe (3) top end bottom side fixedly connected with the connecting pipe (26), and the connecting pipe (26) bottom end is equipped with conveying assembly, and the cooling pipe (3) bottom end inboard fixedly connected with the shunt pipe (27), and the shunt pipe (27) bottom end is equipped with heat dissipation subassembly, and the air pipe (31) bottom end left side fixedly connected with the air outlet pipe (41), and the air outlet pipe (41) left side is equipped with air outlet subassembly.

2. The exhaust gas treatment device for hydrogen production from methanol according to claim 1, characterized by, The conveying assembly includes a delivery pump (24), the connecting pipe (26) bottom end left side fixedly connected with delivery pump (24), the delivery pump (24) left side outer end fixedly connected with the water suction pipe (25), the water suction pipe (25) top end fixedly connected with the manifold pipe (23).

3. The exhaust gas treatment device for hydrogen production from methanol according to claim 2, characterized by, The heat dissipation subassembly includes a heat dissipation box (2), the manifold pipe (23) top end fixedly connected with heat dissipation box (2), the heat dissipation box (2) inside is equipped with the communicating hole (22), the communicating hole (22) is communicated with manifold pipe (23), the heat dissipation box (2) outer wall is equipped with the evenly distributed vent (21), the communicating hole (22) top end is communicated with shunt pipe (27).

4. The exhaust gas treatment device for hydrogen production from methanol according to claim 3, characterized by, The air outlet subassembly includes a first shunt ring (42), the shunt pipe (27) right side fixedly connected with first shunt ring (42), the first shunt ring (42) inboard fixedly connected with evenly distributed air outlet nozzle (43).

5. The exhaust gas treatment device for hydrogen production from methanol according to claim 4, characterized by, The processing tower (1) front end bottom is equipped with evenly distributed air outlet (12), and the air outlet (12) inboard fixedly connected with the exhaust fan (13), and the processing tower (1) rear side bottom end is equipped with the protective net (14).

6. The exhaust treatment device for hydrogen production from methanol of claim 5, wherein, The processing tower (1) inboard top end fixedly connected with second shunt ring (5), the second shunt ring (5) inboard fixedly connected with evenly distributed shower head (51), and the processing tower (1) middle end front side fixedly connected with the sewer pipe (52).

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