CN108310948A - The absorption plant and absorption process of acetone contained by a kind of exhaust gas - Google Patents
The absorption plant and absorption process of acetone contained by a kind of exhaust gas Download PDFInfo
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- CN108310948A CN108310948A CN201810208085.0A CN201810208085A CN108310948A CN 108310948 A CN108310948 A CN 108310948A CN 201810208085 A CN201810208085 A CN 201810208085A CN 108310948 A CN108310948 A CN 108310948A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 100
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 41
- 239000008367 deionised water Substances 0.000 claims abstract description 35
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 35
- 230000002745 absorbent Effects 0.000 claims abstract description 27
- 239000002250 absorbent Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000005587 bubbling Effects 0.000 claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- -1 absorption tower Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000005202 decontamination Methods 0.000 claims 1
- 230000003588 decontaminative effect Effects 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
本发明涉及一种废气所含丙酮的吸收装置及吸收方法，将去离子水作为吸收剂由吸收塔进液口进入，经过喷淋器喷洒至吸收塔内，将含有丙酮的VLA气体由吸收塔下部的进气管输入，经过VLA冷却器进入吸收塔，与去离子水互相接触反应，吸收塔内设有振动鼓泡导流板，使丙酮与吸收剂充分接触反应。并采用紫外灯协同吸收净化丙酮，反应后的气体经过石墨烯膜状吸收层二次吸收后从吸收塔上部的出气管排出。本发明具有操作简单、安全可靠、高吸收率、无二次污染以及吸收的丙酮易进一步处理或回收利用的优势，具有极高的推广利用价值。
The invention relates to an absorption device and absorption method for acetone contained in waste gas. Deionized water is used as an absorbent to enter from the liquid inlet of the absorption tower, sprayed into the absorption tower through a sprayer, and VLA gas containing acetone is discharged from the absorption tower The inlet pipe at the lower part enters the absorption tower through the VLA cooler, and contacts and reacts with the deionized water. The absorption tower is equipped with a vibrating bubbling deflector to fully contact and react the acetone and the absorbent. The ultraviolet lamp is used to absorb and purify the acetone, and the gas after the reaction is secondarily absorbed by the graphene film absorbing layer and then discharged from the gas outlet pipe at the upper part of the absorption tower. The invention has the advantages of simple operation, safety and reliability, high absorption rate, no secondary pollution, and the absorbed acetone is easy to further process or recycle, and has extremely high popularization and utilization value.
Description
技术领域technical field
本发明涉及废气处理技术领域，尤其是一种将废气中含有的丙酮给予回收利用的吸收装置及吸收方法。The invention relates to the technical field of waste gas treatment, in particular to an absorption device and an absorption method for recycling acetone contained in waste gas.
背景技术Background technique
丙酮作为一种良好的有机溶媒，大量地用于化工生产过程，特别是在制药工业和醋酸纤维工业中有着广泛的应用。由于丙酮的沸点较低，挥发性强，所以丙酮大量存在于生产过程产生的废气中，对环境和人体健康造成极大的危害，各国政府都制定了相应的法规，限制丙酮的排放。对废气中的丙酮进行回收，使其能达标排放，可减轻对环境的污染和人体的伤害，同时也可以减少丙酮的消耗，节约运行成本。As a good organic solvent, acetone is widely used in chemical production process, especially in pharmaceutical industry and cellulose acetate industry. Due to the low boiling point and strong volatility of acetone, acetone exists in large quantities in the waste gas generated during the production process, causing great harm to the environment and human health. Governments of various countries have formulated corresponding regulations to limit the emission of acetone. The acetone in the waste gas is recovered to make it discharge up to the standard, which can reduce the pollution to the environment and the harm to the human body, and can also reduce the consumption of acetone and save the operating cost.
当前能源紧缺，节能减排刻不容缓，针对传统工艺中能耗高的问题，开发新的低能耗工艺是当务之急。In the current energy shortage, energy conservation and emission reduction are urgently needed. To solve the problem of high energy consumption in traditional processes, it is imperative to develop new low-energy-consumption processes.
发明内容Contents of the invention
本发明要解决的技术问题是：为了克服现有技术中之不足，本发明提供一种The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, the present invention provides a
本发明解决其技术问题所采用的技术方案是：一种废气所含丙酮的吸收装置，包括吸收塔，吸收塔底部侧壁上安装有进气管，吸收塔塔顶安装有出气管，所述的进气管的管路上安装有VLA冷却器，吸收塔内间距设有一端与吸收塔侧壁固定的振动鼓泡导流板，位于所述振动鼓泡导流板另一端与吸收塔侧壁之间的间隙处上方设有紫外灯，吸收塔顶壁下方设有至少一层石墨烯膜状吸收层，石墨烯膜状吸收层下方设有向所述振动鼓泡导流板上喷射去离子水吸收剂的喷淋器，所述的吸收塔侧壁上部具有连通喷淋器的进液口、底部具有与进气管相对的出液口，进液口与出液口之间的外部管路上设有实现去离子水吸收剂循环流动的循环水泵。The technical scheme adopted by the present invention to solve the technical problem is: an absorption device for acetone contained in waste gas, comprising an absorption tower, an intake pipe is installed on the bottom side wall of the absorption tower, and an air outlet pipe is installed on the top of the absorption tower. A VLA cooler is installed on the pipeline of the intake pipe, and a vibration bubbling deflector with one end fixed to the side wall of the absorption tower is arranged at the inner distance of the absorption tower, and is located between the other end of the vibration bubbling deflector and the side wall of the absorption tower An ultraviolet lamp is arranged above the gap, at least one layer of graphene film-like absorbing layer is arranged under the top wall of the absorption tower, and a deionized water absorbing layer is sprayed onto the vibrating bubbling deflector below the graphene film-like absorbing layer. The upper part of the side wall of the absorption tower has a liquid inlet connected to the sprayer, the bottom has a liquid outlet opposite to the inlet pipe, and the external pipeline between the liquid inlet and the liquid outlet is provided with A circulating water pump to realize the circulating flow of the deionized water absorbent.
为进一步提高吸收效果，所述的吸收塔侧壁上从上至下固定有四块振动鼓泡导流板，所述振动鼓泡导流板的固定端交错与吸收塔侧壁固定。In order to further improve the absorption effect, four vibration bubbling deflectors are fixed from top to bottom on the side wall of the absorption tower, and the fixed ends of the vibration bubbling deflectors are interlaced and fixed to the side wall of the absorption tower.
为方便收集从振动鼓泡导流板流下的去离子水吸收剂，所述的吸收塔内底面设有向出液口侧倾斜的倾斜板。In order to facilitate the collection of the deionized water absorbent flowing down from the vibrating bubbling deflector, the inner bottom of the absorption tower is provided with an inclined plate inclined towards the liquid outlet side.
优选地，所述的倾斜板的倾斜角度为20°。Preferably, the inclination angle of the inclined plate is 20°.
一种上述废气所含丙酮吸收装置的吸收方法，具有如下步骤：An absorption method of an acetone absorption device contained in the above-mentioned waste gas has the following steps:
a、去离子水吸收剂由吸收塔上部进液口进入，经过喷淋器喷洒至吸收塔内的振动鼓泡导流板上；a. The deionized water absorbent enters from the upper liquid inlet of the absorption tower, and is sprayed to the vibrating bubbling deflector in the absorption tower through the sprayer;
b、将含有丙酮的VLA气体由吸收塔下部的进气管输入，经过VLA冷却器进入吸收塔，VLA气体与去离子水吸收剂一起在紫外灯所产生紫外光的照射下，在振动鼓泡导流板上互相接触充分反应；b. The VLA gas containing acetone is input from the intake pipe at the lower part of the absorption tower, and enters the absorption tower through the VLA cooler. The flow plate is in contact with each other to fully react;
c、反应后的气体经过石墨烯膜状吸收层二次吸收后从吸收塔上部的出气管排出。c. The reacted gas is discharged from the gas outlet pipe at the upper part of the absorption tower after being absorbed twice by the graphene film-like absorbing layer.
d、当去离子水吸收剂过多时，由于重力作用从振动鼓泡导流板流下至吸收塔底部的出液口，然后经循环水泵净化循环后打入进液口再次利用。d. When there is too much deionized water absorbent, due to gravity, it will flow down from the vibrating bubbling deflector to the liquid outlet at the bottom of the absorption tower, and then be purified and circulated by the circulating water pump and poured into the liquid inlet for reuse.
优选地，步骤a中的去离子水吸收剂为纯净的、无阴阳离子的水，去离子水吸收剂温度为5～10℃，喷淋器的喷淋密度为6m3/(m2h)。Preferably, the deionized water absorbent in step a is pure water without anions and cations, the temperature of the deionized water absorbent is 5-10°C, and the spray density of the sprayer is 6m 3 /(m 2 h) .
步骤b中的VLA气体进塔温度为15～25℃，紫外灯所产生的紫外线强度为15W，振动鼓泡导流板上产生的鼓泡高度为18～28cm。The temperature of the VLA gas entering the tower in step b is 15-25° C., the intensity of ultraviolet light generated by the ultraviolet lamp is 15 W, and the height of the bubbles generated on the vibrating bubble guide plate is 18-28 cm.
本发明的有益效果是：本发明通过振动鼓泡导流板协同紫外灯共同作用吸收VLA气体内含的丙酮，使丙酮与吸收剂充分接触反应，再经过石墨烯膜状吸收层对丙酮进行二次吸收，吸收效果彻底，反应物质少，吸收率和反应效率高，有效地降低了废气处理能耗；同时去离子水吸收剂制备简单，使用方便，无二次污染，可回收重复利用。The beneficial effects of the present invention are: the present invention absorbs the acetone contained in the VLA gas through the combined action of the vibration bubbling deflector and the ultraviolet lamp, so that the acetone and the absorbent are fully contacted and reacted, and then the acetone is double-treated by the graphene film-like absorbing layer. First-time absorption, complete absorption effect, less reactive substances, high absorption rate and reaction efficiency, effectively reducing energy consumption for waste gas treatment; at the same time, the deionized water absorbent is easy to prepare, easy to use, no secondary pollution, and can be recycled and reused.
附图说明Description of drawings
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
图1是本发明所述吸收装置的结构示意图。Fig. 1 is a schematic structural view of the absorption device of the present invention.
图中：1.吸收塔 2.进气管 3.出气管 4.VLA冷却器 5.振动鼓泡导流板 6.紫外灯7.石墨烯膜状吸收层 8.喷淋器 9.进液口 10.出液口 11.循环水泵 12.倾斜板In the figure: 1. Absorption tower 2. Intake pipe 3. Outlet pipe 4. VLA cooler 5. Vibration bubbling deflector 6. Ultraviolet lamp 7. Graphene film-like absorption layer 8. Sprayer 9. Liquid inlet 10. Liquid outlet 11. Circulating water pump 12. Inclined plate
具体实施方式Detailed ways
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
如图1所示的一种废气所含丙酮的吸收装置，包括吸收塔1，吸收塔1底部侧壁上安装有进气管2，吸收塔1塔顶安装有出气管3，所述的进气管2的管路上安装有VLA冷却器4，吸收塔1内从上至下间距设有一端与吸收塔1侧壁固定的四块振动鼓泡导流板5，所述振动鼓泡导流板5的固定端上下交错与吸收塔1侧壁固定，所述振动鼓泡导流板5另一端与吸收塔1侧壁之间具有间隙。A kind of absorption device of acetone contained in waste gas as shown in Figure 1, comprises absorption tower 1, and intake pipe 2 is installed on the bottom side wall of absorption tower 1, and gas outlet pipe 3 is installed on the top of absorption tower 1 tower, and described air intake pipe 2, a VLA cooler 4 is installed on the pipeline of the absorption tower 1, and four vibrating bubbling deflectors 5 with one end fixed to the side wall of the absorption tower 1 are arranged at a distance from top to bottom in the absorption tower 1. The vibration bubbling deflectors 5 The fixed end is staggered up and down and fixed to the side wall of the absorption tower 1, and there is a gap between the other end of the vibration bubbling deflector 5 and the side wall of the absorption tower 1.
位于所述振动鼓泡导流板5与吸收塔1侧壁之间的间隙处上方设有紫外灯6，吸收塔1顶壁下方设有一层石墨烯膜状吸收层7，石墨烯膜状吸收层7下方设有向所述振动鼓泡导流板5上喷射去离子水吸收剂的喷淋器8，与进气管2位置相对应的吸收塔1侧壁上部具有连通喷淋器8的进液口9、底部具有出液口10，进液口9与出液口10之间的外部管路上设有实现去离子水吸收剂循环流动的循环水泵11。An ultraviolet lamp 6 is arranged above the gap between the vibrating bubbling deflector 5 and the side wall of the absorption tower 1, and a graphene film-like absorption layer 7 is arranged below the top wall of the absorption tower 1, and the graphene film-like absorption Below the layer 7, there is a shower 8 for spraying deionized water absorbent onto the vibrating bubbling deflector 5, and the upper part of the side wall of the absorption tower 1 corresponding to the position of the air inlet pipe 2 has an inlet connected to the shower 8. The liquid port 9 and the bottom have a liquid outlet 10, and the external pipeline between the liquid inlet 9 and the liquid outlet 10 is provided with a circulating water pump 11 to realize the circulation of the deionized water absorbent.
所述的吸收塔1内底面设有向出液口10侧倾斜的倾斜板12，所述的倾斜板12的倾斜角度为20°，以方便收集从振动鼓泡导流板5流下的去离子水吸收剂。The inner bottom surface of the absorption tower 1 is provided with an inclined plate 12 inclined toward the liquid outlet 10 side, and the inclined angle of the inclined plate 12 is 20°, so as to facilitate the collection of the deionized water flowing down from the vibrating bubbling guide plate 5. water absorbent.
上述吸收装置的工艺过程如下：将去离子水作为吸收剂由吸收塔1的进液口9进入，经过喷淋器8喷洒至吸收塔1内的振动鼓泡导流板5上，含有丙酮的VLA气体通过进气管2进入进气管道，经过VLA冷却器4进行冷却后进入吸收塔1内，VLA气体与喷淋器8喷洒下的去离子水混合后，在紫外灯6的照射下，气液在振动鼓泡导流板5上互相接触而充分反应，反应后的气体在向上部出气管3排出的过程中再经过石墨烯膜状吸收层7进行二次吸收，最后除尽丙酮的气体经过出气管3排出吸收塔1。而去离子水吸收剂则从吸收塔1底部的出液口10进入循环水泵11的进液管，经循环水泵11的抽取流经循环水泵11出液管进入吸收塔1的进液口9，重新返回进入喷淋器8。当去离子水吸收剂过多时，由于重力作用从振动鼓泡导流板5流下，经倾斜板12流到吸收塔1底部的出液口10处进行循环。The technical process of the above-mentioned absorption device is as follows: deionized water is used as an absorbent to enter from the liquid inlet 9 of the absorption tower 1, and is sprayed on the vibrating bubbling deflector 5 in the absorption tower 1 through the sprayer 8, and the acetone-containing VLA gas enters the intake pipe through the intake pipe 2, and enters the absorption tower 1 after being cooled by the VLA cooler 4. After the VLA gas is mixed with the deionized water sprayed by the shower 8, under the irradiation of the ultraviolet lamp 6, the gas The liquid contacts with each other on the vibrating bubbling deflector 5 and fully reacts, and the reacted gas passes through the graphene film-like absorbing layer 7 for secondary absorption in the process of being discharged to the upper outlet pipe 3, and finally removes the acetone gas It is discharged from the absorption tower 1 through the outlet pipe 3. The deionized water absorbent then enters the liquid inlet pipe of the circulating water pump 11 from the liquid outlet 10 at the bottom of the absorption tower 1, and enters the liquid inlet 9 of the absorption tower 1 through the liquid outlet pipe of the circulating water pump 11 through the extraction of the circulating water pump 11. Return to enter sprinkler 8 again. When there is too much deionized water absorbent, it will flow down from the vibrating bubbling deflector 5 due to gravity, and flow to the liquid outlet 10 at the bottom of the absorption tower 1 through the inclined plate 12 for circulation.
实验条件为：将纯净、无阴阳离子的去离子水作为丙酮的吸收剂，其中吸收剂还可以添加腐蚀抑制剂等，去离子水温度为5～10℃、喷淋器8的喷淋密度为6m3/(m2h)，VLA气体的进塔温度为15～25℃，紫外灯6产生的紫外线强度为15W，振动鼓泡导流板5所产生的鼓泡高度为18～28cm，将去离子水在吸收塔1中通过循环流动而吸收VLA气体中的丙酮。The experimental conditions are: use pure, anion-free deionized water as the absorbent of acetone, wherein the absorbent can also be added with corrosion inhibitors, etc., the temperature of the deionized water is 5-10°C, and the spray density of the sprayer 8 is 6m 3 /(m 2 h), the temperature of the VLA gas entering the tower is 15-25°C, the intensity of ultraviolet rays produced by the ultraviolet lamp 6 is 15W, and the height of the bubbles generated by the vibration bubbling deflector 5 is 18-28cm. Deionized water absorbs the acetone in the VLA gas by circulating in the absorption tower 1 .
实施案例1Implementation Case 1
a、将去离子水作为丙酮的吸收剂。a. Deionized water is used as the absorbent for acetone.
b、VLA气体从吸收塔1下部进气管2引入吸收塔1内，去离子水通过循环水泵11在吸收塔1进行循环，气液两相在振动鼓泡导流板5上充分接触，在紫外灯6产生的紫外线的协同作用下，VLA气体中的丙酮被吸收到去离子水中，在气体排出吸收塔1的过程中被石墨烯膜状吸收层7二次吸收。此过程中的去离子水温度为9℃，VLA气体的进塔温度为21℃，紫外线的强度为12W，鼓泡高度为21cm。b. VLA gas is introduced into the absorption tower 1 from the intake pipe 2 at the lower part of the absorption tower 1, and the deionized water circulates in the absorption tower 1 through the circulating water pump 11. Under the synergistic effect of the ultraviolet light generated by the lamp 6, the acetone in the VLA gas is absorbed into the deionized water, and is secondarily absorbed by the graphene film-like absorption layer 7 when the gas is discharged from the absorption tower 1. The temperature of deionized water in this process is 9°C, the temperature of VLA gas entering the tower is 21°C, the intensity of ultraviolet rays is 12W, and the bubble height is 21cm.
c、按照上述吸收工艺规程实施，VLA气体在处理前含丙酮923mg/L，经过本工艺处理后，排出吸收塔1的VLA气体中丙酮浓度降低到218mg/L，VLA气体中丙酮的脱除率达到76.4％，VLA气体中丙酮得到充分的降解。c. Implement according to the above-mentioned absorption process regulations, VLA gas contains acetone 923mg/L before treatment, after this process treatment, the acetone concentration in the VLA gas discharged from the absorption tower 1 is reduced to 218mg/L, and the removal rate of acetone in the VLA gas Reaching 76.4%, the acetone in VLA gas is fully degraded.
实施案例2Implementation Case 2
a、将去离子水作为丙酮的吸收剂。a. Deionized water is used as the absorbent for acetone.
b、VLA气体从吸收塔1下部进气管2引入吸收塔1内，去离子水通过循环水泵11在吸收塔1进行循环，气液两相在振动鼓泡导流板5上充分接触，在紫外灯6产生的紫外线的协同作用下，VLA气体中的丙酮被吸收到去离子水中，在气体排出吸收塔1的过程中被石墨烯膜状吸收层7二次吸收。此过程的去离子水温度为6℃，VLA气体的进塔温度为27℃，紫外线的强度为15W，鼓泡高度为26cm。b. VLA gas is introduced into the absorption tower 1 from the intake pipe 2 at the lower part of the absorption tower 1, and the deionized water circulates in the absorption tower 1 through the circulating water pump 11. Under the synergistic effect of the ultraviolet light generated by the lamp 6, the acetone in the VLA gas is absorbed into the deionized water, and is secondarily absorbed by the graphene film-like absorption layer 7 when the gas is discharged from the absorption tower 1. The temperature of deionized water in this process is 6°C, the temperature of VLA gas entering the tower is 27°C, the intensity of ultraviolet light is 15W, and the bubble height is 26cm.
c、按照上述脱硫工艺规程实施，VLA气体在处理前含丙酮967mg/L，经过本工艺处理后，排出吸收塔1的VLA气体中丙酮浓度降低到209mg/L，VLA气体中丙酮的脱除率达到78.4％，VLA气体中丙酮得到充分的降解。c. Implement according to the above-mentioned desulfurization process regulations, VLA gas contains acetone 967mg/L before treatment, after this process treatment, the acetone concentration in the VLA gas discharged from the absorption tower 1 is reduced to 209mg/L, and the removal rate of acetone in the VLA gas Reaching 78.4%, the acetone in VLA gas is fully degraded.
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.
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