CN220276326U - Ammonia water purifying structure - Google Patents
Ammonia water purifying structure Download PDFInfo
- Publication number
- CN220276326U CN220276326U CN202321783730.4U CN202321783730U CN220276326U CN 220276326 U CN220276326 U CN 220276326U CN 202321783730 U CN202321783730 U CN 202321783730U CN 220276326 U CN220276326 U CN 220276326U
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- ammonia water
- rectifying tower
- ammonia
- rectifying column
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- 235000011114 ammonium hydroxide Nutrition 0.000 title claims abstract description 61
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 43
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000012808 vapor phase Substances 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 5
- 238000000746 purification Methods 0.000 claims 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract description 2
- 229930192474 thiophene Natural products 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 239000013527 degreasing agent Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model discloses an ammonia water purifying structure, which comprises a rectifying tower A section, wherein a rectifying tower B section is communicated below the rectifying tower A section, a reboiler is connected below the rectifying tower B section through a pipeline, one side of the rectifying tower B section is connected with a full condenser through a side line, and the full condenser is sequentially connected with an oil removing device and an activated carbon adsorption device through pipelines; rectifying the middle-concentration ammonia water to remove most ammonia salt substances and adjust the concentration of the ammonia water, collecting a stream of vapor phase fluid from the side line of a rectifying tower, condensing the stream of gas into liquid ammonia water, removing most oil from the liquid ammonia water through an oil removing device, reducing the content of oil, naphthalene and salt impurities in the ammonia water to 0.001-1 ppm, adsorbing trace impurities (oil, thiophene, pyridine and the like) in the ammonia water by using active carbon, adjusting the concentration of the ammonia water, and adjusting the adjusting range to 5-80 percent to obtain a high-quality ammonia water product.
Description
Technical Field
The utility model relates to an ammonia water purifying structure, and belongs to the technical field of chemical industry.
Background
Aqueous ammonia refers to aqueous ammonia solution containing NH as main component 3 H 2 O, colorless and transparent and has a pungent odor. Ammonia is volatile and alkaline.
The technology of the patent with application number of CN201811119147.7, namely a process method and a device for producing ammonia water for denitration by using raw material ammonia water, has certain defects, and the produced crude ammonia water mainly has 2 defects:
firstly, the ammonia water has a large amount of impurities such as oil, naphthalene, salt and the like, and the ammonia water evaporation device is blocked when the ammonia water is used in denitration occasions.
Secondly, because the variation range of the cooling water temperature is small, the defect that the concentration of the ammonia water is not easy to adjust exists.
Disclosure of Invention
The utility model provides an ammonia water purifying structure which is used for overcoming the defects that an ammonia water evaporation device is blocked due to the fact that impurities in ammonia water are more likely to cause blockage and the concentration of ammonia water is not easy to adjust in the denitration occasion in the prior art.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model discloses an ammonia water purifying structure which comprises a rectifying tower A section, wherein a rectifying tower B section is communicated with the lower part of the rectifying tower A section, a reboiler is connected with the lower part of the rectifying tower B section through a pipeline, one side of the rectifying tower B section is connected with a full condenser through a side line, and the full condenser is sequentially connected with an oil removing device and an activated carbon adsorption device through pipelines.
Furthermore, one side of the A section of the rectifying tower is connected with a heat exchanger for preheating through a side line, and the heat exchanger controls the flow direction through gravity.
Further, the gas or the gas-liquid mixture heated in the reboiler rises to the bottom of the rectifying tower B section, wherein the gas sequentially passes through the rectifying tower B section and the rectifying tower A section to carry out mass transfer and heat transfer, the final non-condensable gas is discharged from the top of the rectifying tower A section and is sent to a tail gas treatment device outside the boundary region as tail gas, and part of dilute ammonia water is extracted from the reboiler and is sent out.
Further, vapor phase fluid extracted from the upper part of the section B of the rectifying tower flows into a full condenser to form liquid ammonia water, the ammonia water is pressurized and conveyed by a self-flow pump or a pump to sequentially pass through an oil removing device and an active carbon adsorption device to form a final purified ammonia water product, and tail gas discharged from the full condenser is also conveyed to a tail gas treatment device outside an external area.
Further, the oil removing device is a static oil remover, a ceramic membrane filter, a phase separator or a wire mesh oil remover which can remove oil contained in the aqueous solution.
Further, the activated carbon adsorption device is internally provided with activated carbon or activated coke powder for filtering and removing impurities in the aqueous solution.
The beneficial effects achieved by the utility model are as follows: rectifying the middle-concentration ammonia water to remove most ammonia salt substances and adjust the concentration of the ammonia water, collecting a stream of vapor phase fluid from the side line of a rectifying tower, condensing the stream of gas into liquid ammonia water, removing most oil from the liquid ammonia water through an oil removing device, reducing the content of oil, naphthalene and salt impurities in the ammonia water to 0.001-1 ppm, adsorbing trace impurities (oil, thiophene, pyridine and the like) in the ammonia water by using active carbon, adjusting the concentration of the ammonia water, and adjusting the adjusting range to 5-80 percent to obtain a high-quality ammonia water product.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of a first embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.
In the figure: 1. a rectifying tower section A; 2. a rectifying tower B section; 3. a reboiler; 4. a total condenser; 5. an oil removal device; 6. an activated carbon adsorption device; 7. a heat exchanger.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
Example 1
As shown in fig. 1, an ammonia water purifying structure comprises a rectifying tower a section 1, wherein a rectifying tower B section 2 is communicated with the lower part of the rectifying tower a section 1, a reboiler 3 is connected with the lower part of the rectifying tower B section 2 through a pipeline, a full condenser 4 is connected with one side of the rectifying tower B section 2 through a side line, and the full condenser 4 is sequentially connected with an oil removing device 5 and an activated carbon adsorption device 6 through pipelines.
The external medium concentration ammonia water is conveyed into the top of the rectifying tower A section 1 by a pipeline and is sent into the rectifying tower A section 1 for rectification, the rectifying tower A section 1 is arranged above the rectifying tower B section 2 and is connected with the rectifying tower B section 2, the liquid of the rectifying tower A section 1 automatically flows into the rectifying tower B section 2, the gas of the rectifying tower B section 2 rises into the rectifying tower A section 1, the difference of the two sections is that the flow rate and the components of the gas are different, and the medium concentration ammonia water rectification process automatically flows into the reboiler 3 through the rectifying tower A section 1 and the rectifying tower B section 2.
The liquid in the reboiler 3 uses heat source such as steam, heat conducting oil, hot water, etc., and the vapor or vapor-liquid mixture produced by heating, boiling and evaporating rises to the bottom of the rectifying tower B section 2, wherein the gas passes through the rectifying tower B section 2 and the rectifying tower A section 1 in turn for mass and heat transfer, and the final noncondensable gas comes out from the top of the rectifying tower A section 1 as tail gas to be sent to a tail gas treatment device outside the boundary region. Part of the liquid is pumped out from the reboiler 3, the liquid is called diluted ammonia water, and the diluted ammonia water is returned to the technical process flow of the technology method and the device for producing ammonia water for denitration by using raw material ammonia water in the patent with the application number of CN201811119147.7 and is used as reflux liquid. The technical scheme of the utility model is not limited to a specific access point to which the reflux line is connected, as long as the reflux liquid is used as reflux liquid.
A vapor phase fluid is extracted above the rectifying tower B section 2, flows into the full condenser 4, is almost fully condensed to become liquid ammonia water, and the ammonia water is pressurized and conveyed by a self-flow or pump, sequentially passes through the oil removing device 5 and the activated carbon adsorption device 6 to become a final purified ammonia water product.
The degreasing device 5 is a mature complete set of devices capable of removing oil contained in the aqueous solution and comprises a simple standing degreaser, a ceramic membrane filter, a phase separator, a wire mesh degreaser and the like.
The activated carbon adsorption device 6 is a mature complete device capable of filtering and removing impurities in the aqueous solution, the storage tank is filled with activated carbon, the impurities are adsorbed after the solution passes through the activated carbon bed, the activated carbon in the activated carbon adsorption device can be conveniently detached after being adsorbed and saturated, and the old activated carbon is taken out to replace new activated carbon. The active coke powder, which is waste generated by a dust remover in the active coke production process, can be preferably used for adsorbing impurities, so as to achieve the effect of recycling the waste.
Example 2
As shown in fig. 2, the external ammonia water with medium concentration exchanges heat with the heat exchanger 7, enters the rectifying tower A section 1 after being heated, sequentially passes through the rectifying tower A section 1, the rectifying tower B section 2 and the reboiler 3 by gravity, and is rectified in the rectifying tower A section 1.
The reboiler 3 provides steam to the rectifying tower A section and the rectifying tower B section to provide heat, a stream of dilute ammonia water is extracted from the reboiler 3, and the dilute ammonia water exchanges heat with the ammonia water with medium concentration and then is sent to the outside of the boundary area to be used as reflux liquid.
A vapor phase fluid is extracted above the rectifying tower B section 2 and flows into the full condenser 4, the vapor phase fluid is almost fully condensed to become liquid ammonia water, and the ammonia water sequentially passes through the oil removing device 5 and the activated carbon adsorption device 6 to become a final purified ammonia water product.
And collecting the tail gas above the section A1 of the rectifying tower and discharged from the full condenser 4 and sending the collected tail gas to a tail gas treatment device outside the external area.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides an aqueous ammonia purification structure, its characterized in that includes rectifying column A section, rectifying column B section is had in the below intercommunication of rectifying column A section, the below of rectifying column B section has the reboiler through the pipe connection, one side of rectifying column B section has full congealer through the side line connection, full congealer has connected gradually deoiling device and active carbon adsorption device through the pipeline.
2. The ammonia water purifying structure according to claim 1, wherein a side of the rectifying tower a section is connected with a heat exchanger for preheating through a side line, and the heat exchanger controls a flow direction through gravity.
3. The ammonia water purifying structure according to claim 1, wherein the vapor or vapor-liquid mixture heated in the reboiler rises to the bottom of the rectifying column B section, wherein the gas sequentially passes through the rectifying column B section and the rectifying column a section for mass and heat transfer, the final non-condensable gas is discharged from the top of the rectifying column a section and sent to the tail gas treatment device outside the boundary region as tail gas, and part of the dilute ammonia water is extracted from the reboiler and sent out.
4. The ammonia purification structure according to claim 1, wherein the vapor phase fluid extracted from the upper part of the B section of the rectifying tower flows into the total condenser to form liquid ammonia, the ammonia is pressurized and conveyed by gravity flow or a pump to form a final purified ammonia product by sequentially passing through the oil removing device and the activated carbon adsorption device, and the tail gas discharged from the total condenser is also conveyed to the tail gas treatment device outside the external area.
5. The ammonia water purifying structure according to claim 1, wherein the oil removing means is a stationary oil remover, a ceramic membrane filter, a phase separator or a wire mesh oil remover that removes oils contained in an aqueous solution.
6. The ammonia water purifying structure according to claim 1, wherein the activated carbon adsorption device is internally provided with activated carbon or activated coke powder for filtering and removing impurities in the aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321783730.4U CN220276326U (en) | 2023-07-09 | 2023-07-09 | Ammonia water purifying structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321783730.4U CN220276326U (en) | 2023-07-09 | 2023-07-09 | Ammonia water purifying structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220276326U true CN220276326U (en) | 2024-01-02 |
Family
ID=89326499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321783730.4U Active CN220276326U (en) | 2023-07-09 | 2023-07-09 | Ammonia water purifying structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220276326U (en) |
-
2023
- 2023-07-09 CN CN202321783730.4U patent/CN220276326U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |