CN221207486U - Gas absorbing device for substitution of chloroethylene converter - Google Patents
Gas absorbing device for substitution of chloroethylene converter Download PDFInfo
- Publication number
- CN221207486U CN221207486U CN202323197072.3U CN202323197072U CN221207486U CN 221207486 U CN221207486 U CN 221207486U CN 202323197072 U CN202323197072 U CN 202323197072U CN 221207486 U CN221207486 U CN 221207486U
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- Prior art keywords
- alkali
- regulating valve
- valve
- washing tower
- circulation
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical class ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000006467 substitution reaction Methods 0.000 title abstract description 4
- 239000003513 alkali Substances 0.000 claims abstract description 144
- 230000001105 regulatory effect Effects 0.000 claims abstract description 62
- 238000005406 washing Methods 0.000 claims abstract description 51
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 239000003518 caustics Substances 0.000 claims description 10
- 239000008235 industrial water Substances 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
- 239000002585 base Substances 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 31
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a gas absorbing device for substitution of a chloroethylene converter, and belongs to the technical field of tail gas treatment. The utility model comprises an alkaline washing tower, a flow regulating valve, a first manual regulating valve, a waste alkali neutralization tank and a first alkali circulating passage, wherein the flow regulating valve and the first manual regulating valve are respectively connected with the first alkali circulating passage; the flow regulating valve is connected with the top of the alkaline washing tower and the alkaline circulating passage; the first manual regulating valve is connected with the waste alkali neutralization tank and the alkali circulating passage; the first alkali circulation path includes an alkali circulation pump; the alkaline circulating pump is arranged at the outer side of the bottom of the alkaline washing tower, the inlet is connected with the bottom of the alkaline washing tower, and the outlet is connected with the flow regulating valve and the first manual regulating valve; according to the utility model, the alkali circulation passage is connected with the waste alkali neutralization tank by arranging the first manual regulating valve, so that alkali liquid in circulation can be introduced into the waste alkali neutralization tank to complete rapid alkali exchange.
Description
Technical Field
The utility model relates to the technical field of tail gas treatment, in particular to a displacement gas absorbing device of a chloroethylene converter.
Background
Vinyl chloride (Vinyl chloride), also known as Vinyl chloride, is an organic compound used mainly for producing homopolymers and copolymers of polyvinyl chloride, can be copolymerized with Vinyl acetate, butadiene and the like, can be used as a comonomer for various polymers, can be used as a refrigerant or an extractant for dyes and fragrances, and is an important raw material for the plastics industry.
The tail gas generated after the preparation of the chloroethylene contains a large amount of harmful components, the tail gas is directly discharged into the atmosphere to cause the alarm of a flammable and toxic alarm, meanwhile, the discharged gas contains a trace amount of hydrogen chloride to cause environmental pollution, and the discharged hydrogen chloride and the moisture in the air are combined to form hydrochloric acid mist, so that equipment and a heat preservation layer are easy to corrode. Meanwhile, the converter is filled with catalyst and catalyst dust is polluted when the catalyst is put into bags, so that the generated tail gas needs to be recovered by a replacement gas absorbing device, hydrogen chloride and catalyst dust contained in the tail gas are removed, and the environment-friendly emission requirement is met.
However, current vinyl chloride converters also present some problems with displacement gas absorbing devices. For example:
1. The existing vinyl chloride converter replacement gas absorbing device is often arranged separately from the waste alkali neutralization tank, so that the waste alkali liquid cannot be timely led into the waste alkali neutralization tank after the concentration of the alkali liquid is reduced, and the quick alkali replacement cannot be realized;
2. the existing chloroethylene converter is provided with a gas absorbing device instead, the top of the washing tower is not provided with a water mist separating device, and entrained liquid cannot be separated before tail gas is discharged through neutralization reaction.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model provides a gas absorbing device for replacing a vinyl chloride converter, wherein an alkali circulation passage is connected with a waste alkali neutralization tank by arranging a first manual regulating valve, so that alkali liquid in circulation can be introduced into the waste alkali neutralization tank to complete rapid alkali replacement.
A gas absorbing device for substitution of a chloroethylene converter comprises an alkaline washing tower, a flow regulating valve, a first manual regulating valve, a waste alkali neutralization tank and a first alkali circulating passage;
The first alkali circulation passage comprises a first alkali circulation pump, and an inlet of the first alkali circulation passage is connected with the bottom of the alkali washing tower;
an inlet of the flow regulating valve is connected with an outlet of the first alkali circulating passage, and an outlet of the flow regulating valve is connected with the top of the alkali washing tower;
The inlet of the first manual regulating valve is connected with the outlet of the first alkali circulating passage, and the outlet of the first manual regulating valve is connected with the waste alkali neutralization tank.
Further, the device also comprises a first filter, wherein the first filter is arranged at the inlet of the first alkali circulation passage.
Further, the device also comprises a second alkali circulation passage, wherein a second filter is arranged at the inlet of the second alkali circulation passage, and the outlet of the second alkali circulation passage is connected with the flow regulating valve and the first manual regulating valve.
Further, the second alkali circulation path includes a second alkali circulation pump.
Further, the first alkali circulation path and the second alkali circulation path further comprise a first shut-off valve and a second shut-off valve respectively, an inlet of the first shut-off valve is connected with a first alkali circulation pump in the first alkali circulation path, the second shut-off valve is connected with a first alkali circulation pump in the second alkali circulation path, an outlet of the first shut-off valve is connected with the flow regulating valve and the first manual regulating valve, and an outlet of the second shut-off valve is connected with the flow regulating valve and the first manual regulating valve.
Further, the device also comprises a sampling port, wherein the sampling port is arranged between the first alkali circulation passage and the connection of the bottom of the alkaline washing tower, and between the second alkali circulation passage and the connection of the bottom of the alkaline washing tower.
Further, the device also comprises a demister arranged at the top of the alkaline washing tower.
Furthermore, the top of the alkaline washing tower is also connected with an industrial water main through a second manual regulating valve.
Further, a liquid level meter is arranged on the alkaline washing tower.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the alkali circulation passage is connected with the waste alkali neutralization tank by arranging the first manual regulating valve, so that alkali liquid in circulation can be introduced into the waste alkali neutralization tank to complete rapid alkali exchange.
2. According to the utility model, the demister is arranged at the top of the alkaline washing tower, so that the moisture carried in the tail gas after the neutralization reaction treatment can be separated before being discharged.
3. According to the utility model, the industrial water supply pipe can be connected with the top of the alkaline washing tower through the second manual regulating valve, so that the alkaline washing tower can be periodically washed from top to bottom, and sodium chloride crystals in the alkaline washing tower are prevented from blocking equipment pipelines.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present utility model.
In the figure: 1-an alkaline washing tower; 2-a flow regulating valve; 3-a first manual adjustment valve; 4-a first base circulation path; a 5-second alkali circulation path; 6-a spent caustic neutralization tank; 7-a first filter; 8-a second filter; 9-a first alkali circulating pump; 10-a second alkali circulating pump; 11-a demister; 12-sampling port; 13-a level gauge; 14-a second manual regulating valve; 15-a first shut-off valve; 16-a second shut-off valve; 17-a first industrial water mains; 18-a discharge gas header; 19-alkali liquor pipeline; 20-a second industrial water mains;
HV-0277, HV0278, HV-0281 and HV-0282 are all valves (the valves herein are all conventional in the art and are not described too much in the specification); PT-0271 and PI-0271 are pressure gauges and pressure displays; FT-0280 is a flowmeter; AT-0275 is an analytical telemetry meter; AI-0275 is an analytical indicator.
Detailed Description
The technical solution of the present utility model will be clearly and completely described below with reference to fig. 1 of the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in a specific case by those skilled in the art.
The utility model provides a vinyl chloride converter displacement gas absorbing device, which is shown in figure 1, and comprises an alkaline washing tower 1, a flow regulating valve 2, a first manual regulating valve 3, a waste alkali neutralization tank 6 and a first alkali circulating passage 4;
The first alkali circulation path 4 comprises a first alkali circulation pump 9, an inlet of the first alkali circulation path 4 is connected with the bottom of the alkali washing tower 1, and an outlet of the first alkali circulation path is connected with the flow regulating valve 2 and the first manual regulating valve 3; the first alkali circulating pump 9 is used for sucking alkali liquor in the alkali washing tower 4 into the first alkali circulating passage 4;
The inlets of the flow regulating valve 2 and the first manual regulating valve 3 are respectively connected with a first alkali circulating passage 4; the outlet of the flow regulating valve 2 is connected with the top of the alkaline washing tower 1; the outlet of the first manual regulating valve 3 is connected with a waste alkali neutralization tank 6; the flow regulating valve 2 is used for opening and closing the connection between the first alkali circulating passage 4 and the top of the alkali washing tower 1, and can also be used for controlling the flow of circulating alkali liquor entering the alkali washing tower 1 and providing alkali liquor circulation for the tail gas treatment of the alkali washing tower 1; the first manual regulating valve 3 is used for opening and closing the connection between the first alkali circulating passage 4 and the waste alkali neutralization tank 6, and is in a closed state when the tail gas is treated;
When the vinyl chloride converter displacement gas absorbing device is used for treating tail gas, alkali liquor at the bottom of the alkali washing tower 1 flows to the top of the alkali washing tower 1 through a first alkali circulation passage 4 and a flow regulating valve 5 under the action of a first alkali circulation pump 9 to react with exhaust gas in the alkali washing tower 1, then falls back to the bottom of the alkali washing tower 1 again under the action of gravity to finish gas washing, then flows to the top of the alkali washing tower 1 again under the action of the first alkali circulation pump 9 to continue gas washing, and a cycle of 'the bottom of the alkali washing tower 1-the first alkali circulation passage 4-the flow regulating valve 2-the top of the alkali washing tower 1-the bottom of the alkali washing tower 1' is established; after the concentration of the alkali liquor in the alkali washing tower 1 is reduced, the flow regulating valve 2 can be closed, the connection between the first alkali circulating passage 4 and the top of the alkali washing tower 1 is cut off, the first manual regulating valve 3 is opened, the connection between the alkali circulating passage 4 and the waste alkali neutralization tank 6 is opened, and the waste alkali liquor in the alkali washing tower 1 can enter the waste alkali neutralization tank 6 for treatment under the action of the first alkali circulating pump 9. New alkali liquor required by the alkali washing tower 1 is sent to the alkali washing tower 1 through an alkali liquor pipeline 19, and the quick alkali exchange is completed.
In a preferred embodiment, as shown in FIG. 1, the vinyl chloride converter displacement gas absorbing means further comprises a first filter 7 provided at the inlet of the first alkali circulation path 4, the first filter 7 for filtering alkali liquor impurities, protecting the first alkali circulation pump 9 from damage.
In a preferred embodiment, as shown in fig. 1, the vinyl chloride converter displacement gas absorbing device further comprises a second alkali circulation path 5, wherein an inlet of the second alkali circulation path 5 is provided with a second filter 8, and an outlet of the second alkali circulation path is connected with the flow regulating valve 2 and the first manual regulating valve 3; by providing the second alkali circulation path 5, the need for a greater alkali liquor circulation flow rate can be met when required.
In a preferred embodiment, the second alkali circulation path 5 comprises a second alkali circulation pump 10 for sucking the alkali liquor at the bottom of the alkali wash column 1 into the second alkali circulation path 5 through a filter.
In a preferred embodiment, as shown in fig. 1, a first shut-off valve 15 is provided in the first alkali circulation path 4, a second shut-off valve 16 is provided in the second alkali circulation path 5, an inlet of the first shut-off valve 15 is connected to the first circulation pump 9 in the first alkali circulation path 4, and an outlet is connected to the flow rate regulating valve 2 and the first manual regulating valve 3; the inlet of the second shut-off valve 16 is connected with the second circulation pump 10 in the second alkali circulation path 5, the outlet is connected with the flow regulating valve 2 and the first manual regulating valve 3, and the first shut-off valve 15 and the second shut-off valve 16 are used for shutting off/opening the alkali liquor flow in the first alkali circulation path 4 or the second alkali circulation path 5, and further controlling the speed and flow of alkali liquor circulation.
In a preferred embodiment, as shown in fig. 1, the vinyl chloride converter displacement gas absorbing device further comprises a demister 11 arranged at the top of the caustic tower, wherein the demister 11 is used for separating liquid entrained in the off-gas when the off-gas is discharged from the top of the caustic tower 1 after the neutralization reaction is completed.
In a preferred embodiment, as shown in fig. 1, the vinyl chloride converter displacement gas absorbing device further comprises sampling ports 12 provided between the first and second alkaline circulation paths 4 and 5 and the connection to the bottom of the alkaline wash column 1. The sampling port 12 is used for a worker to sample the alkali liquor before entering the alkali circulation path, so that the alkali liquor is accurate in alkali concentration.
In a preferred embodiment, as shown in fig. 1, the top of the alkaline washing tower 1 is also connected with an industrial water main through a second manual regulating valve 14, and industrial water can enter the alkaline washing tower 1 through the top of the alkaline washing tower 1 by opening the second manual regulating valve 14 to wash the inside of the alkaline washing tower 1, so that sodium chloride crystals in the alkaline washing tower 1 are prevented from blocking equipment pipelines.
In a preferred embodiment, as shown in fig. 1, a liquid level meter 13 is further arranged on the alkaline washing tower 1, and the liquid level meter 13 is used for observing the level of the alkaline liquid in the alkaline washing tower 1, and if the level of the alkaline liquid is too high or too low, the flow rate of the alkaline liquid entering the top of the alkaline washing tower 1 through the alkaline circulation passage can be reduced or increased by adjusting the flow rate regulating valve 2.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (9)
1. The displacement gas absorbing device of the chloroethylene converter is characterized by comprising an alkaline washing tower, a flow regulating valve, a first manual regulating valve, a waste alkali neutralization tank and a first alkali circulating passage;
The first alkali circulation passage comprises a first alkali circulation pump, and an inlet of the first alkali circulation passage is connected with the bottom of the alkali washing tower;
an inlet of the flow regulating valve is connected with an outlet of the first alkali circulating passage, and an outlet of the flow regulating valve is connected with the top of the alkali washing tower;
The inlet of the first manual regulating valve is connected with the outlet of the first alkali circulating passage, and the outlet of the first manual regulating valve is connected with the waste alkali neutralization tank.
2. The vinyl chloride converter displacement gas absorbing apparatus of claim 1, further comprising a first filter disposed at an inlet of the first base circulation path.
3. The vinyl chloride converter displacement gas absorbing apparatus of claim 2, further comprising a second alkaline circulation path having a second filter disposed at an inlet thereof, an outlet of the second alkaline circulation path being connected to the flow regulating valve and the first manual regulating valve.
4. A vinyl chloride converter displacement gas absorbing apparatus as defined in claim 3, wherein the second base circulation path comprises a second base circulation pump.
5. The apparatus according to claim 4, wherein the first and second alkali circulation paths further include a first shut-off valve and a second shut-off valve, respectively, the first shut-off valve inlet is connected to a first alkali circulation pump in the first alkali circulation path, the second shut-off valve is connected to a second alkali circulation pump in the second alkali circulation path, the outlet of the first shut-off valve is connected to the flow rate regulating valve and the first manual regulating valve, and the outlet of the second shut-off valve is connected to the flow rate regulating valve and the first manual regulating valve.
6. The vinyl chloride converter displacement gas absorbing apparatus of claim 4, further comprising a sampling port disposed between the connection of the first caustic recirculation path to the bottom of the caustic wash tower and between the connection of the second caustic recirculation path to the bottom of the caustic wash tower.
7. The vinyl chloride converter displacement gas absorbing apparatus of claim 1, further comprising a demister disposed at the top of the caustic tower.
8. The vinyl chloride converter displacement gas absorber of claim 1, wherein the top of the caustic tower is further connected to an industrial water mains via a second manual regulator valve.
9. The vinyl chloride converter displacement gas absorbing apparatus of any one of claims 1-8, wherein a level gauge is further provided on the caustic tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323197072.3U CN221207486U (en) | 2023-11-24 | 2023-11-24 | Gas absorbing device for substitution of chloroethylene converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323197072.3U CN221207486U (en) | 2023-11-24 | 2023-11-24 | Gas absorbing device for substitution of chloroethylene converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221207486U true CN221207486U (en) | 2024-06-25 |
Family
ID=91568137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323197072.3U Active CN221207486U (en) | 2023-11-24 | 2023-11-24 | Gas absorbing device for substitution of chloroethylene converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221207486U (en) |
-
2023
- 2023-11-24 CN CN202323197072.3U patent/CN221207486U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |