CN203392883U - Steam stripping system for waste sodium hypochlorite generated in acetylene cleaning through calcium carbide method - Google Patents
Steam stripping system for waste sodium hypochlorite generated in acetylene cleaning through calcium carbide method Download PDFInfo
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- CN203392883U CN203392883U CN201320465378.XU CN201320465378U CN203392883U CN 203392883 U CN203392883 U CN 203392883U CN 201320465378 U CN201320465378 U CN 201320465378U CN 203392883 U CN203392883 U CN 203392883U
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Abstract
The utility model relates to a steam stripping system and method for waste sodium hypochlorite generated in acetylene cleaning through a calcium carbide method. The steam stripping system comprises a cooling tower, a mist spray cooling tower, a waste sodium hypochlorite heater and a stripping tower, wherein the waste sodium hypochlorite heater and the stripping tower are arranged between the cooling tower and the mist spray cooling tower, the lower part of the cooling tower is connected with the waste sodium hypochlorite heater through a waste sodium hypochlorite circulating pump, the waste sodium hypochlorite heater is communicated with the upper part of the stripping tower, the stripping tower is externally connected with a vacuum pump group and an air condenser, the rear of the stripping tower is connected with the mist spray cooling tower, a drain pipe of the air condenser is connected with an aeration tank, an exhaust pipe is connected with an exhaust pipe of the vacuum pump group, the rear of the mist spray cooling tower is communicated with a wastewater pump, and the wastewater pump is communicated with a sodium hypochlorite configuration device. The steam stripping system utilizes the cooling tower, the mist spray cooling tower and the stripping tower, so that the acetylene in the waste liquid of sodium hypochlorite is effectively removed, and the waste liquid of sodium hypochlorite can be recycled; due to the utilization of the two-stage cooling tower, the loss of water volume is only equal to the evaporation capacity of the cooling tower, so that a large amount of industrial water is saved.
Description
Technical field
The utility model relates to the useless time sodium stripping system of calcium carbide route acetylene cleaning that extracts acetylene in a kind of calcium carbide route acetylene production process in clorox waste water.
Background technology
In calcium carbide route acetylene production process in PVC Production Process, thick acetylene cleaning needs a large amount of process waters, by 120,000 tons of PVC/, calculates, and it is 50M that the required industrial water yield is received in the configuration time of calcium carbide route acetylene cleaning
3/ h, year production time calculated by 8000 hours, and within 1 year, consuming service water is 400000 M
3.The carbide slag simultaneously producing can be for manufacture of cement, but in manufacture of cement, require carbide slag chloride content to be less than 0.06%, and the useless time sodium liquid producing in original acetylene cleaning process reaches more than 2.0% chloride content in carbide slag after entering producer, thereby cannot be applied to manufacture of cement in practice." chlorine bleach liquor's method is prepared in the trade effluent circulation containing clorox in acetylene production process " of the patent No. 200810096505.7 proposes a kind of acetylene gas utilizing in air flotation desorption tower used removal waste water, make the acetylene mass percentage content in waste water be less than 0.01%, then utilize transferpump that the waste water that removes acetylene gas is delivered in venturi mixer and is hybridly prepared into new chlorine bleach liquor with dense chlorine bleach liquor.It only just can disposablely significantly reduce acetylene content, more difficult realization in actual production process by the mode of aeration.Even if can realize, also need through squeezing into a large amount of pressurized air to air flotation desorption tower used for a long time, make air flotation desorption tower used internal gas pressure reach, even surpass after certain pressure intensity, and through contact for a long time, just can make the acetylene content in waste water be less than 0.01%, efficiency is lower, cannot meet actual industrial production demand.
Summary of the invention
It is effective that the purpose of this utility model is to propose a kind of removal acetylene, saves in a large number process water, the useless time sodium stripping system of calcium carbide route acetylene cleaning that can make clorox waste liquid circulation safe use.
The purpose of this utility model is achieved in that the useless time sodium stripping system of calcium carbide route acetylene cleaning comprises two grade cooling towers: cooling tower and spray cooling tower, be arranged on useless time sodium well heater, stripping tower between two grade cooling towers, cooling tower top is connected with the peace and quiet system of higher level, and being provided with acetylene vapor pipe, acetylene vapor pipe is collected gas holder with acetylene and is connected with booster; Cooling tower bottom is communicated with thick acetylene gas inlet pipe, bottom is also connected with useless time sodium well heater by useless time sodium recycle pump, useless time sodium well heater is communicated with stripping tower top, the external vacuum pump group of stripping tower, atmospheric condenser, after connect spray cooling tower, the liquid discharge pipe of atmospheric condenser is connected with aeration tank, vapor pipe is connected with the vapor pipe of vacuum pump group, the vapor pipe of vacuum pump group is collected gas holder with acetylene and is connected with booster, after spray cooling tower, be communicated with waste water pump, the industrial tank in the inferior sodium configuration-system of waste water pump and the peace and quiet system of higher level is communicated with.
The utility model utilizes cooling tower and spray cooling tower, and stripping tower, effectively removes the acetylene content in clorox waste liquid in calcium carbide route acetylene production process, thereby clorox waste liquid can be circulated, is mixed with new chlorine bleach liquor's use.The use of two grade cooling towers, water loss is only the steam output of cooling tower, the steam output average of the whole year of cooling tower is internal circulating load 5%, a large amount of savings process water.The acetylene gas removing is utilized by centralized recovery, has avoided environmental pollution, reaches the object of environmental protection.In the carbide slag producing in production process, chloride content meets manufacture of cement requirement, further improves and utilizes, and has reduced production cost, has improved economic benefit.
Accompanying drawing explanation: concrete structure of the present utility model is provided by following drawings and Examples:
Fig. 1 is the structural representation of the useless time sodium stripping system of calcium carbide route acetylene cleaning.
Embodiment:
The utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and practical situation.
Embodiment: as shown in Figure 1, the useless time sodium stripping system of calcium carbide route acetylene cleaning comprises two grade cooling towers: cooling tower and spray cooling tower, be arranged on useless time sodium well heater, stripping tower between two grade cooling towers.Cooling tower top is connected with the peace and quiet system of higher level, and is provided with acetylene vapor pipe, and acetylene vapor pipe is collected gas holder with acetylene and is connected with booster; Cooling tower bottom is communicated with thick acetylene gas inlet pipe, and bottom is also connected with useless time sodium well heater by useless time sodium recycle pump, and useless time sodium recycle pump is provided with a circulation line and is communicated with cooling tower top.Useless time sodium well heater is communicated with stripping tower top.The external vacuum pump group of stripping tower, atmospheric condenser, after connect spray cooling tower.The liquid discharge pipe of atmospheric condenser is connected with aeration tank, and vapor pipe is connected with the vapor pipe of vacuum pump group, and the vapor pipe of vacuum pump group is collected gas holder with acetylene and is connected with booster.After spray cooling tower, be communicated with waste water pump, the industrial tank in the inferior sodium configuration-system of waste water pump and the peace and quiet system of higher level is communicated with.Between stripping tower and spray cooling tower, install stripping tower pump, stripping tower pump is provided with a circulation line and is communicated with spray cooling tower top.
In actual production process, clorox waste liquid in spray cooling tower (hereinafter to be referred as useless time sodium liquid), the pH value of useless time sodium liquid is often less than 7, if pH value is less than 5 easy production chloroacetylenes and blasts, pH value is greater than the peace and quiet weak effect of 8 clorox, therefore arrange one on spray cooling tower side, add alkali tank, by by-pass valve control, regularly to spray cooling tower bottom, throw in alkali, keep the interior pH value of spray cooling tower between 7-8.
Between vacuum pump group and stripping tower, be provided with test sample point, stripping tower is communicated with a nitrogen transfer lime, and test sample point is communicated with the inlet, outlet of vacuum pump group respectively, when test sample point place survey oxygen content gas is greater than 2%, close vacuum pump group, in stripping tower, be filled with nitrogen, guarantee security of system.
By the internal recycle at cooling tower, stripping tower place, and cooling, heating, stripping, cooling again step can make the basic zero clearing of acetylene content in useless time sodium liquid, when reclaiming acetylene gas completely, useless time sodium liquid can recirculation be used, and security is higher.Losing aborning moisture content is only the steam output of two grade cooling towers, greatly reduces process water.
By 120,000 tons of PVC/, calculating, is 60M by the useless time sodium liquid quantity discharged of cooling tower in prior art
3/ h, the acetylene gas dissolving in useless time sodium liquid is about 30 M
3/ h, calculated by 8000 hours annual product time, and the acetylene gas of loss in a year is 240000 M
3, press average gas forming amount 285 M of calcium carbide
3/ t calculates, and amounting to calcium carbide is 842 tons.Calcium carbide price is by 3000 yuan/ton of calculating, and amounting to Renminbi is 252.6 ten thousand yuan/year.Adopt after the utility model technique, useless time sodium at the bottom of cooling tower is heated to 90-100 ℃ by 50 ℃ of medial temperatures and enters stripping tower, the vacuum tightness of stripping tower is 80Kpa, according to the complete useless time sodium of analysis of experiments data stripping tower bottom stripping under this situation, containing acetylene amount, be about 10ppm, substantially can ignore, so 120,000 tons of PVC/ calculate by production capacity, annual recyclable calcium carbide is 842 tons, and amounting to Renminbi is 252.6 ten thousand yuan/year.
Above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs inessential technical characterictic.
Claims (5)
1. the useless time sodium stripping system of a calcium carbide route acetylene cleaning, it is characterized in that: comprise two grade cooling towers: cooling tower and spray cooling tower, be arranged on useless time sodium well heater, stripping tower between two grade cooling towers, cooling tower top is connected with the peace and quiet system of higher level, and being provided with acetylene vapor pipe, acetylene vapor pipe is collected gas holder with acetylene and is connected with booster; Cooling tower bottom is communicated with thick acetylene gas inlet pipe, bottom is also connected with useless time sodium well heater by useless time sodium recycle pump, useless time sodium well heater is communicated with stripping tower top, the external vacuum pump group of stripping tower, atmospheric condenser, after connect spray cooling tower, the liquid discharge pipe of atmospheric condenser is connected with aeration tank, vapor pipe is connected with the vapor pipe of vacuum pump group, the vapor pipe of vacuum pump group is collected gas holder with acetylene and is connected with booster, after spray cooling tower, be communicated with waste water pump, the industrial tank in the inferior sodium configuration-system of waste water pump and the peace and quiet system of higher level is communicated with.
2. the useless time sodium stripping system of calcium carbide route acetylene cleaning as claimed in claim 1, is characterized in that: between stripping tower and spray cooling tower, install stripping tower pump, stripping tower pump is provided with a circulation line and is communicated with spray cooling tower top.
3. the useless time sodium stripping system of calcium carbide route acetylene cleaning as claimed in claim 1, is characterized in that: useless time sodium recycle pump is provided with a circulation line and is communicated with cooling tower top.
4. the useless time sodium stripping system of calcium carbide route acetylene cleaning as claimed in claim 1, is characterized in that: on spray cooling tower side, arrange one and add alkali tank, by by-pass valve control, thrown and be communicated with spray cooling tower bottom.
5. the useless time sodium stripping system of calcium carbide route acetylene cleaning as claimed in claim 1, is characterized in that: between vacuum pump group and stripping tower, be provided with test sample point, stripping tower is communicated with a nitrogen transfer lime, and test sample point is communicated with the inlet, outlet of vacuum pump group respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465378.XU CN203392883U (en) | 2013-08-01 | 2013-08-01 | Steam stripping system for waste sodium hypochlorite generated in acetylene cleaning through calcium carbide method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465378.XU CN203392883U (en) | 2013-08-01 | 2013-08-01 | Steam stripping system for waste sodium hypochlorite generated in acetylene cleaning through calcium carbide method |
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| CN203392883U true CN203392883U (en) | 2014-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342399A (en) * | 2013-08-01 | 2013-10-09 | 新疆中泰化学股份有限公司 | Stripping system and stripping method for cleaning waste sodium hypochlorite in production of acetylene by virtue of calcium carbide method |
-
2013
- 2013-08-01 CN CN201320465378.XU patent/CN203392883U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342399A (en) * | 2013-08-01 | 2013-10-09 | 新疆中泰化学股份有限公司 | Stripping system and stripping method for cleaning waste sodium hypochlorite in production of acetylene by virtue of calcium carbide method |
| CN103342399B (en) * | 2013-08-01 | 2016-12-28 | 新疆中泰化学股份有限公司 | Acetylene from calcium carbide peace and quiet useless sodium stripping system and method |
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Owner name: XINJIANG ZHONGTAI CHEMICAL FUKANG ENERGY CO., LTD. Free format text: FORMER OWNER: XINJIANG ZHONGTAI CHEMICAL CO., LTD. Effective date: 20140825 |
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Free format text: CORRECT: ADDRESS; FROM: 830009 URUMQI, XINJIANG UYGUR AUTONOMOUS REGION TO: 831500 CHANGJI HUI AUTONOMOUS PREFECTURE, XINJIANG UYGUR AUTONOMOUS REGION |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140825 Address after: Junggar road 831500 the Xinjiang Uygur Autonomous Region Changji Fukang City, No. 3188 Patentee after: XINJIANG ZHONGTAI CHEMICAL FUKANG ENERGY CO., LTD. Address before: 830009 No. 78 West Hill Road, the Xinjiang Uygur Autonomous Region, Urumqi Patentee before: Xinjiang Zhongtai Chemical Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: XINJIANG ZHONGTAI CHEMICAL CO., LTD. Free format text: FORMER OWNER: XINJIANG ZHONGTAI CHEMICAL FUKANG ENERGY CO., LTD. Effective date: 20150429 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 831500 CHANGJI HUI AUTONOMOUS PREFECTURE, XINJIANG UYGUR AUTONOMOUS REGION TO: 830026 URUMQI, XINJIANG UYGUR AUTONOMOUS REGION |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150429 Address after: 830026 the Xinjiang Uygur Autonomous Region Urumqi Yangcheng Lake Economic and Technological Development Zone, Road No. 39 Patentee after: Xinjiang Zhongtai Chemical Co., Ltd. Address before: Junggar road 831500 the Xinjiang Uygur Autonomous Region Changji Fukang City, No. 3188 Patentee before: XINJIANG ZHONGTAI CHEMICAL FUKANG ENERGY CO., LTD. |