CN213253741U - Nitrogen dioxide tail gas absorbs and recycles device - Google Patents
Nitrogen dioxide tail gas absorbs and recycles device Download PDFInfo
- Publication number
- CN213253741U CN213253741U CN202021576553.9U CN202021576553U CN213253741U CN 213253741 U CN213253741 U CN 213253741U CN 202021576553 U CN202021576553 U CN 202021576553U CN 213253741 U CN213253741 U CN 213253741U
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- China
- Prior art keywords
- tail gas
- absorption
- nitrogen dioxide
- absorption tower
- tank
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- 239000007789 gas Substances 0.000 title claims abstract description 63
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 title claims abstract description 33
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 claims abstract description 94
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000003513 alkali Substances 0.000 claims abstract description 15
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 14
- 238000004064 recycling Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- 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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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a nitrogen dioxide tail gas absorbs and recycles device, it belongs to chemical industry equipment and tail gas absorption and utilizes technical field, and it includes: the device comprises a primary absorption tower, a secondary absorption tower, an absorption liquid transfer tank, a circulating pump, a dilute nitric acid outlet, a dilute alkali liquid absorption tank and a harmless tail gas outlet; the nitrogen dioxide tail gas absorption and reuse device adopts a multi-stage water absorption method, so that the nitrogen dioxide tail gas can be completely converted into reusable dilute nitric acid, and the absorbed tail gas is neutralized by dilute alkali liquor, thereby realizing harmless emission; the utility model discloses a nitrogen dioxide tail gas absorbs and recycles device has that the investment is not big, the installation is easy, simple process, convenient operation's advantage, the utility model discloses a nitrogen dioxide tail gas absorbs and recycles device not only is favorable to the environmental protection, can also give simultaneously and bring certain economic benefits.
Description
Technical Field
The utility model belongs to the technical field of chemical equipment and tail gas absorption and utilization, in particular to a nitrogen dioxide tail gas absorption and reuse device.
Background
In the oxidation reaction in which nitric acid participates, nitrogen dioxide tail gas is mostly released, people are very sensitive to the nitrogen dioxide due to the special pungent smell of the nitrogen dioxide, and meanwhile, the nitrogen dioxide is converted into dilute nitric acid when meeting water or humid air, so that the corrosion to peripheral equipment is also serious.
If the recovery treatment is not timely and thorough, part of the nitrogen dioxide will be emitted out, which will adversely affect the production area and the atmospheric environment, and also will not be economically lost.
If the nitrogen dioxide tail gas can be effectively recovered and treated in time, the production and living environment of people can be improved, and a certain economic value can be generated.
Disclosure of Invention
The utility model discloses original purpose of solving above problem has designed a nitrogen dioxide tail gas absorption and recycle device, has simple process, absorbs advantage thorough, convenient operation. The method is not only beneficial to protecting the atmospheric environment, but also can bring certain economic return to people.
The technical scheme of the utility model a nitrogen dioxide tail gas absorbs device of recycling has disclosed, and it has adopted the absorptive method of multistage water, makes nitrogen dioxide tail gas can thoroughly change the rare nitric acid that can recycle into, and the tail gas after the absorption is through the neutralization treatment of rare alkali lye again, and then realizes innoxious emission.
The utility model discloses technical scheme a nitrogen dioxide tail gas absorb recycle device, it includes: one-level absorption tower, the second grade absorption tower, the absorption liquid transfer tank, the circulating pump, the export of dilute nitric acid, dilute alkali lye absorption tank, harmless tail gas export, a serial communication port, it links to each other with one-level absorption tower lower part side to contain nitrogen dioxide tail gas pipeline, absorption liquid transfer tank is being connected to one-level absorption tower bottom, the circulating pump rethread pipeline is connected absorption liquid transfer tank and absorption tower upper portion, one-level absorption tower links together with the mode of establishing ties with the second grade absorption tower, second grade absorption liquid transfer tank is being connected to second grade absorption tower bottom, be provided with pure water pipeline above the second grade absorption liquid transfer tank, secondary tail gas pipeline after the absorption treatment links to each other with dilute alkali lye absorption tank, harmless tail gas export sets up in dilute alkali lye absorption tank upper portion.
Preferably, the utility model discloses technical scheme a nitrogen dioxide tail gas absorb device of recycling, a serial communication port, one-level absorption tower and second grade absorption tower choose for use stereoplasm PP material, inside is equipped with 2-4 group's filler module.
Preferably, the utility model discloses technical scheme a nitrogen dioxide tail gas absorb reuse device, its characterized in that, the filler module in choose for use be ripple filler or spherical PE filler.
The utility model discloses technical scheme's a nitrogen dioxide tail gas absorbs recycles device, its obvious beneficial effect who brings is: the method has the advantages that 1 is simple in process, thorough in absorption and convenient and fast to operate, and 2 is beneficial to protecting the atmospheric environment and can bring certain economic return to people.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic view of the plane connection effect of the nitrogen dioxide tail gas absorption and recycling device according to the technical scheme of the present invention.
In fig. 1: the tail gas recycling device comprises a tail gas pipeline 01, a tail gas inlet 02, a primary absorption tower 03, a secondary absorption tower 04, a primary circulating pump 05, a primary absorption liquid transfer tank 06, a primary absorption liquid inlet 07, a primary tail gas outlet 08, a primary tail gas pipeline 09, an absorption liquid transfer control valve 10, a pure water inlet 11, a dilute alkali liquor inlet 12, a dilute nitric acid outlet 13, a dilute alkali liquor absorption tank 14, a secondary absorption liquid transfer tank 15, a secondary circulating pump 16 and a harmless tail gas outlet 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention are further described below with reference to the accompanying drawings.
Referring to fig. 1, a nitrogen dioxide tail gas absorption and reuse apparatus according to the embodiment of the present invention includes: the tail gas recycling device comprises a tail gas pipeline 01, a tail gas inlet 02, a primary absorption tower 03, a secondary absorption tower 04, a primary circulating pump 05, a primary absorption liquid transfer tank 06, a primary absorption liquid inlet 07, a primary tail gas outlet 08, a primary tail gas pipeline 09, an absorption liquid transfer control valve 10, a pure water inlet 11, a dilute alkali liquor inlet 12, a dilute nitric acid outlet 13, a dilute alkali liquor absorption tank 14, a secondary absorption liquid transfer tank 15, a secondary circulating pump 16 and a harmless tail gas outlet 17.
The nitrogen dioxide tail gas absorption and reuse device of the embodiment of the specific embodiment has the following material trend of gas path and liquid path, gas path: the tail gas pipeline 01 → the tail gas inlet 02 → the primary absorption tower 03 → the secondary absorption tower 04 → the dilute alkali liquid absorption tank 14 → the harmless tail gas outlet 17; liquid path: the pure water inlet 11 → the secondary absorption liquid transfer tank 15 → the secondary circulating pump → the primary absorption liquid transfer tank 06 → the dilute nitric acid outlet 13. The working process of (2) is as follows: its simple workflow is such that: starting a circulating pump 05, conveying the absorption liquid in a primary absorption liquid transfer tank 06 to the upper part of an absorption tower 03 through a primary absorption liquid inlet 07 by the circulating pump 05, spraying the absorption liquid from top to bottom, allowing nitrogen dioxide tail gas generated in a workshop to enter the lower part of the absorption tower 03 through a tail gas inlet 02, flowing from bottom to top, crossing the absorption liquid sprayed from top to bottom, performing absorption reaction, allowing the reacted absorption liquid to flow into the primary absorption liquid transfer tank 06, and allowing the primarily absorbed tail gas to enter a secondary absorption tower 04 along a primary tail gas pipeline 09, thus repeatedly circulating; when the concentration of the first-stage absorption liquid reaches 30-35%, the first-stage absorption liquid is available dilute nitric acid, the first-stage absorption liquid is switched to a workshop through a control valve 13 for recycling, then, the absorption liquids of all stages are moved forward, and new pure water is supplemented from a pure water inlet 11; the tail gas after repeated absorption finally enters a dilute alkali solution absorption tank 14 containing 1-10% of NaOH, so that trace nitrogen dioxide tail gas reacts with the NaOH to form sodium nitrite, and the harmless tail gas after harmless treatment is discharged through a harmless tail gas outlet 17.
According to the device, the utility model discloses technical scheme a nitrogen dioxide tail gas absorb device of recycling, have simple process, absorb thorough advantage, still have the advantage of the little simple operation of investment.
Such device, technical scheme a nitrogen dioxide tail gas absorption recycle device, not only favorable to the atmospheric environment that protects, can also bring certain economic benefits for us simultaneously, it is very favorable to the recycling economy of construction green, environmental protection.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The scope of the present invention is to be accorded the widest scope consistent with the principles and novel features provided herein.
Claims (3)
1. A nitrogen dioxide tail gas absorbs and recycles device, it includes: one-level absorption tower, the second grade absorption tower, the absorption liquid transfer tank, the circulating pump, the export of dilute nitric acid, dilute alkali lye absorption tank, harmless tail gas export, a serial communication port, it links to each other with one-level absorption tower lower part side to contain nitrogen dioxide tail gas pipeline, absorption liquid transfer tank is being connected to one-level absorption tower bottom, the circulating pump rethread pipeline is connected absorption liquid transfer tank and absorption tower upper portion, one-level absorption tower links together with the mode of establishing ties with the second grade absorption tower, second grade absorption liquid transfer tank is being connected to second grade absorption tower bottom, be provided with pure water pipeline above the second grade absorption liquid transfer tank, secondary tail gas pipeline after the absorption treatment links to each other with dilute alkali lye absorption tank, harmless tail gas export sets up in dilute alkali lye absorption tank upper portion.
2. The nitrogen dioxide tail gas absorption and reuse device according to claim 1, wherein the primary absorption tower and the secondary absorption tower are made of hard PP materials, and 2-4 groups of packing modules are arranged in the primary absorption tower and the secondary absorption tower.
3. The nitrogen dioxide tail gas absorption and reuse device according to claim 2, wherein the filler module is selected from corrugated filler or spherical PE filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021576553.9U CN213253741U (en) | 2020-08-03 | 2020-08-03 | Nitrogen dioxide tail gas absorbs and recycles device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021576553.9U CN213253741U (en) | 2020-08-03 | 2020-08-03 | Nitrogen dioxide tail gas absorbs and recycles device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213253741U true CN213253741U (en) | 2021-05-25 |
Family
ID=75968628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021576553.9U Active CN213253741U (en) | 2020-08-03 | 2020-08-03 | Nitrogen dioxide tail gas absorbs and recycles device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213253741U (en) |
-
2020
- 2020-08-03 CN CN202021576553.9U patent/CN213253741U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 461500 eastern part of Wei Wu Road, Changge, Xuchang, Henan Patentee after: Xintiandi Pharmaceutical Co.,Ltd. Address before: 461500 eastern part of Wei Wu Road, Changge, Xuchang, Henan Patentee before: HENAN NEWLAND PHARMACEUTICAL Co.,Ltd. |