TWM574073U - Gas processing device - Google Patents

Abstract

A gas processing device comprising at least a first processing unit, a first intake pipe, at least a second processing unit, a second intake pipe, at least one second heater disposed in the second processing unit, and A first heat exchange unit. The first processing unit includes a first processing chamber that communicates with the first intake pipe, and a first air outlet that communicates with the first processing chamber. The second processing unit surrounds the first processing unit and includes a second processing chamber that communicates with the second intake tube and does not communicate with the first processing chamber, and a second air outlet that communicates with the second processing chamber. The first heat exchange unit surrounds the first intake pipe and includes a first exchange chamber that communicates with one of the first outlet pipe and the second outlet pipe, and a first exhaust pipe. By the first heat exchange unit, the gas discharged after the treatment can exchange heat with the gas that has not been processed, thereby saving energy required for heating the gas.

Description

Gas treatment device

The present invention relates to a gas treatment device, and more particularly to a gas treatment device having a double reaction unit and capable of independently providing heat required for the reaction to save energy consumption.

Ammonia (NH3) can be used as a raw material for fertilizers, fuels, detergents and refrigerants. It has many industrial chemical applications and is one of the most abundant inorganic compounds in the world, but it has not only a pungent odor but also soluble. Corrosive after water, if it is leaked or discharged into the atmosphere without treatment, it will cause serious environmental concerns. Therefore, it needs to be properly treated before being discharged, and it can be discharged into harmless nitrogen.

Combined with appropriate catalyst, it can decompose ammonia into nitrogen and hydrogen. Nitrogen and hydrogen have wide industrial use. The hydrogen in the product can be used as a raw material for green energy such as hydrogen and oxygen batteries. One.

However, the reaction of decomposing ammonia into nitrogen and hydrogen is an endothermic reaction and needs to be carried out at an extremely high ambient temperature. The current practice is to provide an electric heater in the reaction tank to provide the heat energy required for the reaction, but in the process. There is still room for improvement in the need to consume a large amount of electricity, resulting in a cost burden and a large amount of energy consumption.

Therefore, the object of the present invention is to provide a gas treatment device that can save energy consumption.

Therefore, the novel gas processing apparatus includes at least a first processing unit, a first intake pipe, at least a second processing unit, a second intake pipe, at least a second heater, and a first heat exchange. unit. The first processing unit includes a first processing chamber, a first catalyst disposed in the first processing chamber, and a first air outlet tube in communication with the first processing chamber. The first intake pipe is disposed opposite to the first air outlet and communicates with the first processing chamber. The second processing unit surrounds the first processing unit and includes a second processing chamber, a second catalyst disposed in the second processing chamber, and a second air outlet tube communicating with the second processing chamber, The second processing chamber is out of communication with the first processing chamber. The second intake pipe is disposed opposite to the second air outlet and communicates with the second processing chamber. The second heater is disposed in the second processing unit. The first heat exchange unit surrounds the first intake pipe and includes a first exchange chamber that communicates with one of the first outlet pipe and the second outlet pipe, and a first row that communicates with the first exchange chamber trachea.

The utility model has the advantages that: by the first heat exchange unit, the higher temperature gas discharged after the treatment can exchange heat with the gas which has not been reacted and has a lower temperature, thereby saving heating of the first treatment device. In order to make the gas react with the energy required, the temperature of the gas discharged after the reaction can be lowered to facilitate subsequent application.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, a first embodiment of the present novel gas processing apparatus includes a first processing unit 1, a first intake pipe 2, a second processing unit 3, a second intake pipe 4, and a first A heater 51, a second heater 52, a first heat exchange unit 6, and a second heat exchange unit 7.

In the present embodiment, the treatment of applying the gas treatment device to ammonia gas is taken as an example. The first intake pipe 2 and the second intake pipe 4 are respectively used for ammonia gas generated in an industrial process. The exhaust gas enters the first processing unit 1 and the second processing unit 3, and the ammonia gas reacts with the catalyst in the first processing unit 1 and the second processing unit 3, respectively, and is converted into harmless gas and discharged. In the present embodiment, the first processing unit 1 and the second processing unit 3 are respectively in the shape of a long tube to provide a longer reaction time for the ammonia gas to be sufficiently converted.

The first processing unit 1 includes a first processing chamber 11 , a first catalyst 12 disposed in the first processing chamber 11 , and a first air outlet 13 in communication with the first processing chamber 11 . The first catalyst 11 is a reduction catalyst.

The first intake pipe 2 is disposed opposite to the first air outlet pipe 13 and communicates with the first processing chamber 11 .

The second processing unit 3 is wrapped around the first processing unit 1 and includes a second processing chamber 31, a second catalyst 32 disposed in the second processing chamber 31, and a second processing unit. The second outlet chamber 33 is connected to the chamber 31, and the second processing chamber 31 is not in communication with the first processing chamber 11. The second catalyst 32 is an oxidation catalyst.

The second intake pipe 4 is disposed opposite to the second air outlet pipe 33 and communicates with the second process chamber 31.

The first heater 51 is disposed in the first processing chamber 11, and the second heater 52 is disposed in the second processing chamber 31. The first heater 51 and the second heater 52 can respectively provide the first processing The heat required for the gas treatment reaction in unit 1 and the second processing unit 3. In the embodiment, the first heater 51 and the second heater 52 are respectively long column heaters extending into the first processing chamber 11 and the second processing chamber 31 to uniformly heat the entire first The processing chamber 11 and the entire second processing chamber 31 are processed to achieve a good heating effect, but not limited thereto. It is conceivable that the gas processing apparatus of the present invention can also provide a plurality of first heaters 51 uniformly arranged in the first processing chamber 11 depending on the scale of the reaction or the size of the first processing unit 1 and the second processing unit 3. And a plurality of second heaters 52 uniformly arranged in the second processing chamber 31 to improve the heating effect, but not limited thereto, the second heaters 52 can also be disposed outside the second processing chamber 31. For example, it is arranged around the second processing unit 3, and by heating the outer casing of the second processing unit 3, the effect of increasing the temperature of the second processing unit 3 can also be achieved.

The first heat exchange unit 6 surrounds the first intake pipe 2 and includes a first exchange chamber 61 that communicates with the first air outlet pipe 13 and a first exhaust pipe 62 that communicates with the first exchange chamber 61. In the embodiment, the first heat exchange unit 6 is connected to the first air outlet pipe 13 via an external pipe (not shown) to communicate the first exchange chamber 61 and the first air outlet pipe 13.

The second heat exchange unit 7 surrounds the first intake pipe 2 and includes a second exchange chamber 71 that communicates with the second air outlet pipe 33, and a second exhaust pipe 72 that communicates with the second exchange chamber 71. The second exchange chamber 71 and the first exchange chamber 61 are not in communication. In the present embodiment, the second heat exchange unit 7 is connected to the second air outlet pipe 33 via another external pipe (not shown) to communicate the second exchange chamber 71 and the second air outlet pipe 33.

In this embodiment, the first intake pipe is adapted to transport the ammonia gas to be treated to the first processing chamber along an intake direction D1, and the first heat exchange unit and the second heat exchange unit are along the The intake direction D1 is sequentially disposed at the periphery of the first intake pipe. In addition, in other implementations, the first heat exchange unit 6 may be included only, and the second heat exchange unit 7 may not be included, and the first heat exchange unit 6 may communicate with the first air outlet tube 13 and the One of the second outlet pipes 33.

In operation, the ammonia exhaust gas to be treated enters the first processing unit 1 and the second processing unit 3 via the first intake pipe 2 and the second intake pipe 4, respectively. Referring to the arrow A in FIG. 1 , the ammonia gas sent through the first intake pipe 2 passes through the first catalyst 12 in the first processing unit 1 by the heat supplied by the first heater 51. Catalytic decomposition into nitrogen and hydrogen, the reaction formula is as follows:

2NH ₃ →N ₂ +3H ₂

The obtained product nitrogen and hydrogen are both harmless gases, and are widely used in industry, and are discharged into the first exchange chamber 61 of the first heat exchange unit 6 via the first outlet pipe 13, and then via The first exhaust pipe 62 is discharged and available for subsequent collection for further purification and application.

Referring to the arrow B in FIG. 1 , after the ammonia gas enters the second processing unit 3 from the second intake pipe 4, the heat provided by the second heater 52 and the catalysis of the second catalyst 32, ammonia The gas reacts with oxygen as nitrogen and water, and the reaction formula is as follows:

4NH ₃ +3O ₂ →2N ₂ +6H ₂ O

The nitrogen and water of the product can be directly discharged into the second exchange chamber 71 of the second heat exchange unit 7 via the second outlet pipe 33, and then discharged or collected through the second exhaust pipe 72 for purification. In order to avoid mutual interference of the reaction, the first processing chamber 11 is not in communication with the second processing chamber 31, and the supply of ammonia gas is also independent, and is provided by the first intake pipe 2 and the second intake pipe 3, respectively.

In detail, the "ammoxidation" reaction performed in the second treatment unit 3 is an exothermic reaction, and the "ammonia decomposition" reaction performed in the first treatment unit 1 is an endothermic reaction. Heating the second processing chamber 31 by the second heater 52 to cause a reaction to occur, and then the thermal energy released by the reaction can heat the first processing unit 1 to provide an "ammonia decomposition" reaction in the first processing unit 1. The amount of heat needed. When the temperature of the first processing unit 1 is insufficient, the first heater 51 can be turned on to raise the temperature of the first processing chamber 11, but if the temperature is sufficient to stabilize the "ammonia decomposition" reaction, the first heater can be stopped. The operation of 51, and only the exothermic reaction of the "ammoxidation" reaction in the second treatment unit 3 is supplied to the first treatment unit 1 for reaction.

In addition, the gas (hydrogen and nitrogen) generated after the reaction between the first processing unit 1 and the second processing unit 3 is higher than the ammonia gas before the reaction, so that hydrogen and nitrogen are used. Discharging into the first heat exchange unit 6 and the second heat exchange unit 7, the wall of the first intake pipe 2 can be heated to provide heat to the ammonia gas that will enter the first processing unit 1, thereby saving The energy required for the first processing unit 1 is heated. In addition, the gas discharged from the first exhaust pipe 62 and the second exhaust pipe 72 needs to be cooled to be subjected to subsequent processing and application, and therefore, the exhausted gas passes through the first heat exchange unit 6 and the first When the heat exchange unit 7 is used, in addition to providing heat to the first intake pipe 2, the temperature of the first intake pipe 2 can be lowered to facilitate subsequent purification and application, and the time and energy required for cooling can be reduced.

It is noted that, since the temperature of the gas discharged by the first processing unit 1 is higher than the temperature of the gas discharged by the second processing unit 3, the first heat exchange unit 6 and the second heat exchange unit 7 are along the The intake direction D1 is sequentially disposed on the periphery of the first intake pipe 2, so that the gas discharged by the first processing unit 1 can first contact the first intake pipe 2, so that the first one can be more effectively reduced. The temperature of the gas discharged from the processing unit 1.

It is to be noted that, in this embodiment, the first processing unit 1 is provided with two screens 14 to separate the first processing chamber 11 and the first intake tube 2, and to separate the first processing. The chamber 11 and the first air outlet tube 13. The second processing unit 3 is provided with a screen 34 for partitioning the second processing chamber 31 and the second air outlet tube 33. The screens 14, 34 are for allowing gas to pass through and preventing the first catalyst 12 from The second catalyst 32 leaks from the first processing chamber 11 and the second processing chamber 31, respectively. The second processing unit 3 is further provided with a partition 35 separating the second processing chamber 31 and the second intake pipe 4, and a gas flow pipe 36 extending from the partition 35 toward the second processing chamber 31. The partition plate 35 is made of a gas-tight material, and the ammonia gas enters the second processing chamber 31 via the second intake pipe 2 and the gas flow pipe 36, and thus is extended into the second processing chamber 31 by the extension. The gas flow pipe 36 at the position ensures that ammonia gas can be released in the center of the second processing chamber 31, uniformly reacts in the second processing chamber 31 and releases heat to uniformly heat the first processing unit. 1.

Referring to FIG. 3, the principle of the second embodiment of the present novel gas processing apparatus is substantially the same as that of the first embodiment. The main difference is that the second embodiment includes a plurality of communicating with the first intake pipe 2. The first processing unit 1 and a plurality of second processing units 3 that communicate with the second intake pipe 4 and surround the first processing unit 1 respectively. The first exchange chamber 61 of the first heat exchange unit 6 communicates with the first air outlet tubes 13 of the first processing units 1, and the second exchange chamber 71 of the second heat exchange unit 7 communicates with the first The second outlet tubes 33 of the two processing units 3.

Thus, by the first processing unit 1 and the second processing unit 3 that are "parallel" with each other, the second embodiment can double the ammonia treatment in addition to the same efficiency as the first embodiment. Efficiency to meet the needs of the actual application of the industry. In the present embodiment, only the first processing unit 1 and the second processing unit 3 are shown in the figure, but the implementation is not limited thereto.

It is worth mentioning that the novel gas treatment device can also be applied to other chemical reactions of gas treatment, and is not limited to the ammonia treatment described in the above embodiments. The first treatment unit 1 is provided by a suitable catalyst. Can be applied to an endothermic reaction, such as a reduction reaction, in which case the first catalyst 12 corresponds to a reduction catalyst; the second treatment unit 3 can be applied to an exothermic reaction, such as an oxidation reaction, at this time The second catalyst 32 corresponds to the use of an oxidation catalyst, whereby the second processing unit 3 can heat the first processing unit 1 during the reaction process to achieve the energy cost saving process, and grasp the above principles. The first processing unit 2 and the second processing unit 4 can also be treated with different gases using a suitable catalyst. It is conceivable that the present invention can also be applied to the treatment of other liquefiable hydrogen-containing gases such as methane (CH ₄ ), propane (C ₃ H ₈ ) and the like, but is not limited thereto.

In addition, the first heat exchange unit 6 and the second heat exchange unit 7 are also not limited to the cylindrical form, and the first heat exchange unit 6 and the second heat exchange unit 7 may also be tubular and sequentially The first intake pipe 2 is surrounded to exchange heat between the gas generated after the reaction and the gas that has not undergone the endothermic reaction, but is not limited thereto.

In summary, the effect of the novel gas treatment device is that the first heat exchange unit 1 surrounds the first intake pipe 2, and the first exchange chamber 61 communicates with the first air outlet pipe 13, the first process The high temperature gas generated by the reaction of the unit 1 can exchange heat with the gas to be reacted into the first processing unit 1, thereby saving the energy required for heating the first treatment device 1 to react the gas, and at the same time reducing the discharge after the reaction. The temperature of the gas, in order to facilitate subsequent application, can indeed achieve the purpose of the present invention.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧First Processing Unit

11‧‧‧First treatment chamber

12‧‧‧First Catalyst

13‧‧‧First outlet tube

14‧‧‧ screen

2‧‧‧First intake pipe

3‧‧‧Second processing unit

31‧‧‧Second processing chamber

32‧‧‧Secondary catalyst

33‧‧‧Second outlet tube

34‧‧‧ screen

35‧‧‧Baffle

36‧‧‧ gas flow tube

4‧‧‧Second intake manifold

51‧‧‧First heater

52‧‧‧second heater

6‧‧‧First heat exchange unit

61‧‧‧First exchange room

62‧‧‧First exhaust pipe

7‧‧‧Second heat exchange unit

71‧‧‧Second exchange room

72‧‧‧Second exhaust pipe

D1‧‧‧Intake direction

A‧‧‧ gas flow direction

B‧‧‧ Gas flow direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a cross-sectional view of a first embodiment of the gas processing apparatus of the present invention; and Figure 2 is a gas of the present invention. A schematic cross-sectional view of a second embodiment of a processing device.

Claims (7)

A gas processing apparatus comprising: at least one first processing unit, comprising a first processing chamber, a first catalyst disposed in the first processing chamber, and a first air outlet tube in communication with the first processing chamber a first air inlet tube opposite to the first air outlet tube and connected to the first processing chamber; at least one second processing unit surrounding the first processing unit and including a second processing chamber, one disposed on the first a second catalyst of the two processing chambers, and a second air outlet tube communicating with the second processing chamber, the second processing chamber is not in communication with the first processing chamber; a second intake tube, opposite to the a second air outlet tube is disposed and communicates with the second processing chamber; at least one second heater is disposed at the second processing unit; and a first heat exchange unit surrounds the first air inlet tube and includes a first communication unit a first exchange chamber of one of the outlet pipe and the second outlet pipe, and a first exhaust pipe in communication with the first exchange chamber. The gas processing apparatus of claim 1, wherein the first exchange chamber of the first heat exchange unit communicates with the first outlet pipe. The gas processing apparatus of claim 2, further comprising a second heat exchange unit surrounding the first intake pipe, the second heat exchange unit including a second exchange chamber communicating with the second outlet pipe, and a a second exhaust pipe communicating with the second exchange chamber, the second exchange chamber and the first exchange chamber are not in communication. The gas processing apparatus of claim 3, wherein the first intake pipe is adapted to transport gas to the first processing chamber in an intake direction, the first heat exchange unit and the second heat exchange unit along The intake direction is sequentially disposed at the periphery of the first intake pipe. The gas treatment device of claim 1, wherein the first catalyst is a reduction catalyst. The gas treatment device of claim 1, wherein the second catalyst is an oxidation catalyst. The gas processing apparatus of claim 1, further comprising at least one first heater disposed in the first processing chamber.