CN206188747U - Dissolved acetylene's recycle device among wet acetylene waste water - Google Patents
Dissolved acetylene's recycle device among wet acetylene waste water Download PDFInfo
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- CN206188747U CN206188747U CN201620903652.0U CN201620903652U CN206188747U CN 206188747 U CN206188747 U CN 206188747U CN 201620903652 U CN201620903652 U CN 201620903652U CN 206188747 U CN206188747 U CN 206188747U
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- acetylene
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Abstract
The utility model discloses a carry out the waste water that contains dissolved acetylene in the wet acetylene production recycle's dissolved acetylene's recycle device among wet acetylene waste water, including the acetylene gas generator who connects gradually, positive water seal, acetylene condenser, a washing tower, water ring compressor, washing two towers, peace and quiet tower and neutralizing tower, still include wastewater collection jar, waste water delivery pump and heat exchanger, positive water seal, acetylene condenser, a washing tower, water ring compressor, two towers of washing and neutralizing tower all are equipped with the drain, the drain is respectively through pipeline and wastewater collection tank deck portion intercommunication, the import of waste water delivery pump is connected with the heat exchanger through the pipeline through pipeline and wastewater collection jar sub -unit connection, waste water delivery pump export, the heat exchanger passes through the pipeline and is connected with acetylene gas generator. The utility model discloses collect and the retrieval and utilization dissolved acetylene, reduce environmental pollution, practice thrift the waste water treatment cost, reduce the security that production consumed the cost, improved production.
Description
Technical field
The utility model is related to the process field of acetylene waste water, especially contains dissolved acetylene in a kind of wet method acetylene production
The retracting device of waste water.
Background technology
China mainly uses calcium carbide method acetylene production, and carbide is divided into dry and wet again, domestic at present commonly used
It is calcium carbide method acetylene production wet processing, reaction equation is as follows：
CaC2+2H2O→C2H2+Ca(OH)2+129.8kJ/mol
After hydrolysis, saturated steam and part spray water enter calcium carbide with acetylene gas in acetylene generator
Separated with acetylene gas after the equipment condensations such as follow-up positive water seal, acetylene condenser, one tower of washing, acetylene gas adds through water ring compressor
Washed and lowered the temperature water removal into the tower of water scrubber two after pressure, removed the vapor and spray water carried secretly in acetylene gas, it is laggard
Enter peace and quiet tower to remove the impurity such as the hydrogen phosphide in acetylene, hydrogen sulfide, acetylene gas from peace and quiet tower out after, will be with substantial amounts of acid
Property material (H2SO4、H3PO4Deng), it is necessary to the alkali lye of neutralizing tower absorbs acidic materials therein, acetylene gas middle acid substance with
Feeding VCM synthesis is used after 6%~12% sodium hydroxide solution carries out acid-base neutralization reaction removing acidic materials in neutralizing tower.
At present, Production of PVC enterprise configuration Sewage Plant, the waste water to producing during acetylene production is concentrated
Treatment, but from the benefit of the positive water seal of second, acetylene condenser, one tower of washing, the waste water of the tower of water scrubber two and water ring compressor
Plus pendular ring water, neutralizing tower change the waste water such as buck and contain dissolved acetylene, if directly as discharge of wastewater be transported to Sewage Plant treatment,
Not only it is not comprehensively utilized the water resource in production process, causes the waste of great lot of water resources, production cost increases；And
And recycled containing dissolved acetylene in the waste water of discharge, increase polyvinyl chloride and produce acetylene by raw material of calcium carbide
The consumption of calcium carbide of the products such as gas；And the contained dissolved acetylene gas in processing procedure of waste water can volatilize and enter air, cause
Environmental pollution, influence Sewage Plant production scene operating personnel's is healthy, if the second that it is volatilized during waste water is processed
Alkynes gas concentration gathers finite concentration in local space, may induce blast accident.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of returning for dissolved acetylene in wet method acetylene production waste water
Receipts utilize device, and the waste water containing dissolved acetylene in wet method acetylene production is recycled, while by the dissolving in waste water
Acetylene is recycled, and realizes energy-conservation, emission reduction, the purpose of consumption reduction.
The utility model solves the technical scheme that its technical problem used：Dissolved in a kind of wet method acetylene production waste water
The recycle device of acetylene, including acetylene generator, positive water seal, acetylene condenser, one tower of washing, the water ring pressure being sequentially connected
Contracting machine, two towers of washing, peace and quiet tower and neutralizing tower, also including wastewater collection tank, waste water delivery pump and heat exchanger, the anasarca with shortness of breath
Envelope, acetylene condenser, one tower of washing, water ring compressor, two towers of washing and neutralizing tower are equipped with sewage draining exit, the sewage draining exit point
Not Tong Guo pipeline connected with wastewater collection tank top, waste water conveying pump inlet is connected by pipeline with wastewater collection tank bottom
Connect, waste water conveying pump discharge is connected by pipeline with heat exchanger, and the heat exchanger is connected by pipeline with acetylene generator.
Preferably, the wastewater collection tank top conveys pump discharge and is connected by return valve and waste water, the waste water
Collecting tank is provided with liquid level gauge, and the liquid level gauge is interlocked with return valve.
Preferably, the heat exchanger is plate type heat exchanger.
The beneficial effects of the utility model are：
(1) the utility model is collected and as second to all waste water containing dissolved acetylene during wet method acetylene production
Calcium carbide reaction water in alkynes generator, had both saved calcium carbide hydrolysis industrial water, and waste water in production process is realized again
Zero-emission, it is to avoid environmental pollution that discharge of wastewater is brought, the cost for wastewater treatment saved in production process；
(2) dissolved acetylene in waste water is delivered to be discharged in acetylene generator with waste water and enters production system, realizes
The recycling of dissolved acetylene, reduces production consuming cost；When avoiding that dissolved acetylene volatilization causes wastewater treatment in waste water
Generation blast accident, improves the security of production；
(3) acetylene generator is entered after the higher temperature waste water discharged in production process is cooled down through heat exchanger, it is to avoid useless
The temperature control of the too high influence acetylene generator of coolant-temperature gage.
Brief description of the drawings
Fig. 1 is flow chart of the present utility model；
Fig. 2 is structural representation of the present utility model；
Marked in figure：The positive water seals of 1-, 2- acetylene condenser, 3- wash a tower, 4- water ring compressors, 5- wash two towers,
6- neutralizing towers, 7- wastewater collections tank, 71- return valves, 72- liquid level gauges, 8- waste water delivery pump, 9- heat exchangers, 10- acetylene hair
Raw device.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, in the utility model wet method acetylene production waste water dissolved acetylene recycle device, including
The acetylene generator 10 that is sequentially connected, positive water seal 1, acetylene condenser 2, one tower 3 of washing, water ring compressor 4, two towers 5 of washing,
Peace and quiet tower and neutralizing tower 6, also including wastewater collection tank 7, waste water delivery pump 8 and heat exchanger 9, positive water seal 1, the acetylene condensation
Device 2, one tower 3 of washing, water ring compressor 4, two towers 5 of washing and neutralizing tower 6 are equipped with sewage draining exit, and the sewage draining exit passes through respectively
Pipeline is connected with the top of wastewater collection tank 7, and the waste water delivery pump 8 import is connected by pipeline with the bottom of wastewater collection tank 7, is given up
The outlet of water delivery pump 8 is connected by pipeline with heat exchanger 9, and the heat exchanger 9 is connected by pipeline with acetylene generator 10.
Operation principle of the present utility model：
The calcium carbide input hydrolysis of acetylene generator 10 produces thick acetylene gas, wherein saturated steam and spray water to enter with acetylene gas
Enter positive water seal 1, part vapor and its spray water cooled down at positive water seal 1 and deposit make its liquid level of positive water seal 1 go up and
Cause generator exhaust resistance to increase, therefore the discharge of wastewater that dissolved acetylene is contained in the part need to be fallen to ensure acetylene generator
The safety and stability of 10 production runs.The waste water main component of the positive discharge of water seal 1：Water, a small amount of calcium hydroxide particle and dissolved acetylene.
The acetylene gas discharged through positive water seal 1 condenses cooling, condensed rear its acetylene in the case where recirculated water is cooled down indirectly into acetylene condenser 2
Vapor and spray water in gas are discharged as production waste water.The waste water main component of the discharge of acetylene condenser 2：Water, Shao Liangqing
Calcium oxide particle and dissolved acetylene.Through the condensed acetylene gas of acetylene condenser 2 enter washing one tower 3 carry out further washing and
Cooling, further removes the calcium hydroxide particle and vapor and spray water carried secretly in acetylene gas, to ensure water ring compressor 4
Normal operation.Wash the waste water main component of the discharge of a tower 3：Water, a small amount of calcium hydroxide particle and dissolved acetylene.Through washing a tower
By the pressurized delivered of water ring compressor 4, the waste water of the discharge of water ring compressor 4 is compression to acetylene gas after 3 washings and cooling down
The pendular ring water added in machine running, the waste water main component of the discharge of water ring compressor 4：Water, dissolved acetylene.Compressed through water ring
Acetylene gas after machine 4 pressurizes is washed and is lowered the temperature water removal into two towers 5 of washing, removes the vapor and mist carried secretly in acetylene gas
Shape water, to ensure the normal operation of follow-up peace and quiet tower.Wash the waste water main component of the discharge of two tower 5：Water, dissolved acetylene.Through water
The acetylene gas washed after the washing of two towers and cooling water removal enters S, P foreign gas that the reaction of peace and quiet tower is removed in acetylene gas, after reaction
The Waste Sulfuric Acid of generation is delivered to environmentally friendly factory and office's reason.The acetylene gas for removing S, P impurity through the reaction of peace and quiet tower enters neutralizing tower 6, with
Feeding VCM synthesis after acid-base neutralization reaction removes acidic materials is carried out with 6~12% sodium hydroxide solutions in tower 6 to use.Neutralize
The alkaline waste water that generation is reacted in tower 6 is periodically discharged.The waste water main component of the discharge of neutralizing tower 6：Water, sodium carbonate, sulfuric acid
Sodium, sodium phosphate and dissolved acetylene.
What positive water seal 1, acetylene condenser 2, one tower 3 of washing, water ring compressor 4, two towers 5 of washing and neutralizing tower 6 were produced
Waste water is discharged by sewage draining exit, enters wastewater collection tank 7 by pipeline respectively, then pass through pipeline extremely by waste water delivery pump 8
After heat exchanger 9 exchanges heat, wastewater temperature is down to normal temperature, enters back into acetylene generator 10, used as calcium carbide hydrolysis industrial water, electricity
Stone is exothermic reaction with the hydrolysis of water, and the dissolved acetylene in waste water discharges with the rising of temperature in acetylene generator 10
Out used into production system.
The top of wastewater collection tank 7 is exported with waste water delivery pump 8 by return valve 71 and is connected, and on wastewater collection tank 7
Liquid level gauge 72 is provided with, liquid level gauge 72 is interlocked with return valve 71, the waste water of the outlet of waste water delivery pump 8 passes through return valve 71
Reverse reflux adjusts the liquid level of wastewater collection tank 7 to wastewater collection tank 7, prevents that the liquid level of wastewater collection tank 7 is too low to be caused to give up
The empty scaling loss of water delivery pump 8 is bad.
The heat exchanger 9 is plate type heat exchanger, good effect of heat exchange and convenient cleaning foulant；The heat exchange of the heat exchanger 9
Medium is recirculated water.
Embodiment：
As shown in Figure 1 and Figure 2, in a kind of wet method acetylene production waste water dissolved acetylene recycle device, including connect successively
The acetylene generator 10 that connects, positive water seal 1, acetylene condenser 2, one tower 3 of washing, water ring compressor 4, two towers 5 of washing, peace and quiet tower with
And neutralizing tower 6, also including wastewater collection tank 7, waste water delivery pump 8 and heat exchanger 9, the positive water seal 1, acetylene condenser 2, washing
One tower 3, water ring compressor 4, two towers 5 of washing and neutralizing tower 6 are equipped with sewage draining exit, and described each sewage draining exit passes through pipeline respectively
Connected with the top of wastewater collection tank 7, the waste water delivery pump 8 import is connected by pipeline with the bottom of wastewater collection tank 7, and waste water is defeated
Send pump 8 to export to be connected with heat exchanger 9 by pipeline, the heat exchanger 9 is connected by pipeline with acetylene generator 10.Wastewater collection
The top of tank 7 is exported with waste water delivery pump 8 by return valve 71 and is connected, and wastewater collection tank 7 is provided with liquid level gauge 72, liquid level
Meter 72 is interlocked with return valve 71.
By taking the PVC production lines that annual production is 400,000 tons, whole year production run time is 8000 hours as an example：
Whole year discharge wastewater flow rate
(1) the positive waste discharge water of water seal 1：1.2 × 8000 × 10=96000m3(positive water seal totally 10, waste discharge water is about
1.2m3/ h. platforms)；Positive about 60 DEG C of wastewater temperature of the discharge of water seal 1, acetylene solubility 0.37m3/m3；
(2) acetylene condenser 2 and the washing water amount of blowdown of one tower 3：16 × 8000=128000m3(blowdown flow rate about 16m3/h)；
Acetylene condenser 2 and washing about 40 DEG C of the wastewater temperature of discharge of one tower 3, acetylene solubility 0.65m3/m3；
(3) the pendular ring water blowdown flow rate of water ring compressor 4：2 × 8000 × 7=112000m3(run compressor totally 7, blowdown
Amount about 2m3/ h. platforms)；The pendular ring water of water ring compressor 4 discharges about 50 DEG C of wastewater temperature, acetylene solubility 0.50m3/m3；
(4) blowdown flow rate of two tower 5 is washed：6.5 × 8000=52000m3(blowdown flow rate about 6.5m3/h)；Wash the discharge of two tower 5 useless
About 10 DEG C of coolant-temperature gage, acetylene solubility 1.31m3/m3；
(5) neutralizing tower 6 changes alkali blowdown flow rate：1.5 × 8000=12000m3(blowdown flow rate about 1.5m3/h)；Neutralizing tower 6 is discharged
About 25 DEG C of wastewater temperature, acetylene solubility 0.93m3/m3；
Whole year discharge wastewater flow rate：96000+128000+112000+52000+12000=400000m3。
Positive water seal 1, acetylene condenser 2, one tower 3 of washing, water ring compressor 4, two towers 5 of washing and the discharge of neutralizing tower 6
Waste water is pipelined to wastewater collection tank 7 by sewage draining exit, then by waste water delivery pump 8 by pipeline to heat exchanger 9
Exchanged heat to normal temperature, delivered to acetylene generator 10.Dissolved acetylene discharges reuse in acetylene generator 10 in waste water
In production system.
It is computed, whole year reclaims acetylene tolerance and is：
96000 × 0.37+128000 × 0.65+112000 × 0.50+52000 × 1.31+12000 × 0.93=
254000m3；
Whole year can save calcium carbide consumption：
254000 ÷ 280=907.14 tons (calcium carbide gas forming amount is calculated by 280L/kg)
The economic benefit of generation：
Save consumption of calcium carbide cost：907.14 × 3,200 ten thousand yuan of ÷ 10000=290.28 (calcium carbide purchasing price by 3200 yuan/
Ton is calculated)
Save cost for wastewater treatment：(wastewater treatment unit price is based on 10 yuan/ton for 400000 × 10 ten thousand yuan of ÷ 10000=400
Calculate)
Save industry water consuming cost：400000 × 1 ten thousand yuan of ÷ 10000=40 (industry water unit price is by 1 yuan/ton of calculating)
Equipment operation energy consumption expense：11 × 0.5 × 8000 × 0.8 ten thousand yuan of ÷ 10000=3.52 (waste water delivery pump 11kw,
Whole year production run time was calculated by 8000 hours, and circulating cooling water consumption is increased slightly compared with original system, and operating cost is ignored not
Meter)
Maintenance of equipment depreciation cost：Ten thousand yuan of 10 × 0.15=1.5 (100,000 yuan of equipment gross investment, equipment depreciation and working service
Scale of charges is calculated by 0.15)
Annual return：Ten thousand yuan of 290.28+400+40-3.52-1.5=725.26
Claims (3)
1. in wet method acetylene production waste water dissolved acetylene recycle device, including be sequentially connected acetylene generator (10),
Positive water seal (1), acetylene condenser (2), one tower of washing (3), water ring compressor (4), two towers of washing (5), peace and quiet tower and neutralization
Tower (6), it is characterised in that：Also including wastewater collection tank (7), waste water delivery pump (8) and heat exchanger (9), the positive water seal (1),
Acetylene condenser (2), one tower of washing (3), water ring compressor (4), two towers of washing (5) and neutralizing tower (6) are equipped with sewage draining exit,
The sewage draining exit connect by pipeline and wastewater collection tank (7) top respectively, the waste water delivery pump (8) import pass through pipeline and
Wastewater collection tank (7) bottom is connected, and waste water delivery pump (8) outlet is connected by pipeline with heat exchanger (9), the heat exchanger (9)
It is connected with acetylene generator (10) by pipeline.
2. in wet method acetylene production waste water according to claim 1 dissolved acetylene recycle device, it is characterised in that：
Wastewater collection tank (7) top is exported with waste water delivery pump (8) by return valve (71) and is connected, the wastewater collection tank
(7) liquid level gauge (72) is provided with, the liquid level gauge (72) is interlocked with return valve (71).
3. in wet method acetylene production waste water according to claim 1 dissolved acetylene recycle device, it is characterised in that：
The heat exchanger (9) is plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620903652.0U CN206188747U (en) | 2016-08-18 | 2016-08-18 | Dissolved acetylene's recycle device among wet acetylene waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620903652.0U CN206188747U (en) | 2016-08-18 | 2016-08-18 | Dissolved acetylene's recycle device among wet acetylene waste water |
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|---|---|
| CN206188747U true CN206188747U (en) | 2017-05-24 |
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ID=58737011
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620903652.0U Active CN206188747U (en) | 2016-08-18 | 2016-08-18 | Dissolved acetylene's recycle device among wet acetylene waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078456A (en) * | 2018-10-16 | 2018-12-25 | 内蒙古汇智化工科技发展有限责任公司 | A kind of acetylene recovery device and method |
| CN109354568A (en) * | 2018-10-11 | 2019-02-19 | 长治市霍家工业有限公司 | A kind of mixed dehydration acetylene general pipeline blowdown acetylene gas recovering device |
-
2016
- 2016-08-18 CN CN201620903652.0U patent/CN206188747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354568A (en) * | 2018-10-11 | 2019-02-19 | 长治市霍家工业有限公司 | A kind of mixed dehydration acetylene general pipeline blowdown acetylene gas recovering device |
| CN109078456A (en) * | 2018-10-16 | 2018-12-25 | 内蒙古汇智化工科技发展有限责任公司 | A kind of acetylene recovery device and method |
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