CN104140114A - Method for recycling residual alkali liquor in caustic soda and caustic soda flake concentration device - Google Patents
Method for recycling residual alkali liquor in caustic soda and caustic soda flake concentration device Download PDFInfo
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- CN104140114A CN104140114A CN201410372834.5A CN201410372834A CN104140114A CN 104140114 A CN104140114 A CN 104140114A CN 201410372834 A CN201410372834 A CN 201410372834A CN 104140114 A CN104140114 A CN 104140114A
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Abstract
The invention discloses a method for recycling residual alkali liquor in a caustic soda and caustic soda flake concentration device. The method comprises the following steps that (1) a recycling device for the residual alkali liquor is manufactured; (2) high-concentration and high-temperature alkali liquor remaining in a high-temperature residual alkali liquor pipe network is discharged into a cooling and diluting tank through an alkali liquor output pipe; (3) the high-concentration and high-temperature alkali liquor in the cooling and diluting tank is naturally cooled to 140 DEG C - 160 DEG C; (4) a cooling water source is turned on, and cooling water is made to enter the cooling and diluting tank through a cooling and diluting water pipe to dilute and cool the alkali liquor; (5) the diluted and further cooled alkali liquor in the cooling and diluting tank is discharged into a recycling tank through a diluting tank liquor outlet pipe; (6) an alkali liquor recycling pump is started, and the alkali liquor in the recycling tank is pumped into an alkali liquor storage tank through an alkali liquor recycling pipe. The method has the advantages that the safety for recycling the residual alkali liquor is greatly improved, the recycling efficiency for the residual alkali liquor is greatly improved, and production cost is saved for concentration of caustic soda and caustic soda flakes.
Description
Technical field
The present invention relates to the recovery method of residual alkali lye in caustic soda, sheet alkali concentrate apparatus.
Background technology
After caustic soda, sheet alkali concentrate apparatus stop, residual high temperature alkaline solution must drain.Traditional mode that drains is: residual high temperature alkaline solution in caustic soda, sheet alkali concentrate apparatus is disposed in a lye tank, after the high temperature alkaline solution cooled and solidified in lye tank, is poured in other container again.Because residual concentration of lye is high, corrodibility is strong, so alkali lye tends to cause the generation of security incident in toppling process, causes personnel's injury in various degree.
Summary of the invention
The object of the invention is: provide a kind of can effectively avoid security incident to occur and caustic soda that organic efficiency is high, sheet alkali concentrate apparatus in the recovery method of residual alkali lye.
For achieving the above object, the technical solution used in the present invention is: caustic soda, the recovery method of residual alkali lye in sheet alkali concentrate apparatus, comprise the following steps: one, make the retrieving arrangement of residual alkali lye, the structure of the retrieving arrangement of described residual alkali lye comprises: the residual alkali lye pipe network of high temperature, the residual alkali lye pipe network of high temperature is connected with cooling dilution trap by alkali lye output tube, on described cooling dilution trap, be connected with cooling dilution water pipe, described cooling dilution water pipe is connected with cooling water source, on the exhaust outlet of cooling dilution trap, be connected with dilution trap drain pipe, dilution trap drain pipe is connected with accumulator tank, on described accumulator tank, be provided with recycle of alkali liquor pump, recycle of alkali liquor pump is delivered to the lye pump in accumulator tank in alkali lye storage tanks by recycle of alkali liquor pipe, two, the high temperature alkaline solution of high density residual in the residual alkali lye pipe network of high temperature is all disposed in cooling dilution trap by alkali lye output tube, three, etc. high density, the high temperature alkaline solution in dilution trap to be cooled naturally cools to 140 ℃～160 ℃, a large amount of crystal of crystallization in alkali lye in natural cooling process, four, open cooling water source, making temperature is that the water coolant of 60 ℃～70 ℃ is entered in cooling dilution trap alkali lye is diluted and further cooling by cooling dilution water pipe, five, by cooling dilution trap dilution, and further desuperheated alkali lye by dilution trap drain pipe, be disposed in accumulator tank, six, start recycle of alkali liquor pump, recycle of alkali liquor pump is pumped to the alkali lye in accumulator tank in alkali lye storage tanks by recycle of alkali liquor pipe.
Further, the recovery method of residual alkali lye in aforesaid caustic soda, sheet alkali concentrate apparatus, wherein, the bottom of described cooling dilution trap is also connected with steam pipeline, and steam-pipe is connected with steam pipe system.
Further, the recovery method of residual alkali lye in aforesaid caustic soda, sheet alkali concentrate apparatus, wherein, in step 4, when alkali lye being diluted and lower the temperature, making vapour pipe Netcom cross steam-pipe is that the delivery of steam of 140 ℃～160 ℃ is in cooling dilution trap by temperature.
Further, the recovery method of residual alkali lye in aforesaid caustic soda, sheet alkali concentrate apparatus, wherein, passes into the amount of water coolant in cooling dilution trap and need guarantee crystal that submergence separates out, and guarantee the crystal that enough dissolving is separated out.
Further, the recovery method of residual alkali lye in aforesaid caustic soda, sheet alkali concentrate apparatus, wherein, described cooling dilution trap is installed above ground level, and described accumulator tank is arranged on below ground level.
Advantage of the present invention is: greatly having improved the security of residual recycle of alkali liquor, and greatly improved the organic efficiency of residual alkali lye, is the concentrated production cost of having saved of caustic soda, sheet alkali.
Accompanying drawing explanation
Fig. 1 is the structural representation of the alkali liquor recovery device that uses in the recovery method of residual alkali lye in caustic soda of the present invention, sheet alkali concentrate apparatus.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
As shown in Figure 1, caustic soda, the recovery method of residual alkali lye in sheet alkali concentrate apparatus, comprise the following steps one, make alkali liquor recovery device, its structure comprises: the residual alkali lye pipe network 1 of high temperature, the residual alkali lye pipe network 1 of high temperature is connected with cooling dilution trap 3 by alkali lye output tube 2, on cooling dilution trap 3, be connected with cooling dilution water pipe 5, described cooling dilution water pipe 5 is connected with cooling water source 4, in the present embodiment, bottom at cooling dilution trap 3 is also connected with steam pipeline 7, steam-pipe 7 is connected with steam pipe system 6, on the exhaust outlet 31 of cooling dilution trap 3, be connected with dilution trap drain pipe 8, dilution trap drain pipe 8 is connected with accumulator tank 9, on described accumulator tank 9, be provided with recycle of alkali liquor pump 10, the recycle of alkali liquor pipe 11 that passes through of recycle of alkali liquor pump 10 is delivered to the lye pump in accumulator tank 9 in alkali lye storage tanks 12, two, high density residual in the residual alkali lye pipe network 1 of high temperature, temperature are all disposed in cooling dilution trap 3 by alkali lye output tube 2 up to the high temperature alkaline solution of 450 ℃ of left and right, three, etc. high density, the high temperature alkaline solution in dilution trap 3 to be cooled naturally cools to 140 ℃～160 ℃, is preferably controlled at 150 ℃ of left and right, a large amount of crystal of crystallization in alkali lye in alkali lye natural cooling process, four, open cooling water source 4, making temperature is that the water coolant of 60 ℃～70 ℃ enters in cooling dilution trap 3 by cooling dilution water pipe 5, water coolant is further lowered the temperature to alkali lye and is diluted the alkali lye in cooling dilution trap 3, passes into the amount of water coolant in cooling dilution trap 3 and need guarantee crystal that submergence separates out, and guarantee the crystal that enough dissolving is separated out in the present embodiment, in order to ensure the crystal of separating out can be fast, dissolve thoroughly, open steam pipe system 6 simultaneously, make temperature from steam pipeline 7, enter to the bottom in cooling dilution trap 3 at the steam of 140 ℃～160 ℃, steam constantly moves upward from cooling dilution trap 3 bottoms, thereby the alkali lye in cooling dilution trap 3 is stirred, can not only accelerate the dissolving of crystal like this, and can guarantee that crystal all dissolves, five, by the interior dilution of cooling dilution trap 3, and further desuperheated alkali lye by dilution trap drain pipe 8, be disposed in accumulator tank 9, six, start recycle of alkali liquor pump 10, recycle of alkali liquor pump 10 is pumped to the alkali lye in accumulator tank 9 in alkali lye storage tanks 12 by recycle of alkali liquor pipe 11.Alkali lye in alkali lye storage tanks 12 can continue to serve as the concentrated production of alkali.Said process, has completed the once recovery of residual alkali lye, adopts above-mentioned recovery method not only greatly to improve the security of whole removal process, and has greatly improved organic efficiency, is the concentrated production cost of having saved of caustic soda, sheet alkali.
Claims (6)
1. caustic soda, the recovery method of residual alkali lye in sheet alkali concentrate apparatus, it is characterized in that: comprise the following steps: one, make the retrieving arrangement of residual alkali lye, the structure of the retrieving arrangement of described residual alkali lye comprises: the residual alkali lye pipe network of high temperature, the residual alkali lye pipe network of high temperature is connected with cooling dilution trap by alkali lye output tube, on described cooling dilution trap, be connected with cooling dilution water pipe, described cooling dilution water pipe is connected with cooling water source, on the exhaust outlet of cooling dilution trap, be connected with dilution trap drain pipe, dilution trap drain pipe is connected with accumulator tank, on described accumulator tank, be provided with recycle of alkali liquor pump, recycle of alkali liquor pump is delivered to the lye pump in accumulator tank in alkali lye storage tanks by recycle of alkali liquor pipe, two, the high temperature alkaline solution of high density residual in the residual alkali lye pipe network of high temperature is all disposed in cooling dilution trap by alkali lye output tube, three, etc. high density, the high temperature alkaline solution in dilution trap to be cooled naturally cools to 140 ℃～160 ℃, a large amount of crystal of crystallization in alkali lye in natural cooling process, four, open cooling water source, making temperature is that the water coolant of 60 ℃～70 ℃ is entered in cooling dilution trap alkali lye is diluted and further cooling by cooling dilution water pipe, five, by cooling dilution trap dilution, and further desuperheated alkali lye by dilution trap drain pipe, be disposed in accumulator tank, six, start recycle of alkali liquor pump, recycle of alkali liquor pump is pumped to the alkali lye in accumulator tank in alkali lye storage tanks by recycle of alkali liquor pipe.
2. the recovery method of residual alkali lye in caustic soda according to claim 1, sheet alkali concentrate apparatus, is characterized in that: the bottom of described cooling dilution trap is also connected with steam pipeline, and steam-pipe is connected with steam pipe system.
3. the recovery method of residual alkali lye in caustic soda according to claim 2, sheet alkali concentrate apparatus, it is characterized in that: in step 4, when alkali lye being diluted and lower the temperature, making vapour pipe Netcom cross steam-pipe is that the delivery of steam of 140 ℃～160 ℃ is in cooling dilution trap by temperature.
4. according to the recovery method of residual alkali lye in the caustic soda described in claim 1 or 2 or 3, sheet alkali concentrate apparatus, it is characterized in that: pass into the amount of water coolant in cooling dilution trap and need guarantee crystal that submergence separates out, and guarantee the crystal that enough dissolving is separated out.
5. according to the recovery method of residual alkali lye in the caustic soda described in claim 1 or 2 or 3, sheet alkali concentrate apparatus, it is characterized in that: described cooling dilution trap is installed above ground level, and described accumulator tank is arranged on below ground level.
6. the recovery method of residual alkali lye in caustic soda according to claim 4, sheet alkali concentrate apparatus, is characterized in that: described cooling dilution trap is installed above ground level, and described accumulator tank is arranged on below ground level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410372834.5A CN104140114B (en) | 2014-08-01 | 2014-08-01 | The recovery method of residual alkali lye in caustic soda, sheet alkali concentrate apparatus |
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| CN201410372834.5A CN104140114B (en) | 2014-08-01 | 2014-08-01 | The recovery method of residual alkali lye in caustic soda, sheet alkali concentrate apparatus |
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| CN104140114B CN104140114B (en) | 2016-01-13 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52114598A (en) * | 1976-03-24 | 1977-09-26 | Ishikawajima Harima Heavy Ind Co Ltd | Purification of caustic soda obtained by diaphragm process |
| CN1234370A (en) * | 1998-05-01 | 1999-11-10 | 黄中杰 | Method for recovering waste liquid of industrial mixed alkali |
| CN101549912A (en) * | 2008-10-29 | 2009-10-07 | 浙江东洋环境工程有限公司 | Mercerized waste alkali recovery process and system thereof |
| CN101905894A (en) * | 2009-06-03 | 2010-12-08 | 开平富琳纺织制衣有限公司 | Method for recycling waste alkali liquor |
| CN102963911A (en) * | 2012-11-14 | 2013-03-13 | 中湘钨业股份有限公司 | Method of recycling residual alkali from sodium tungstate solution in tungsten smelting |
| CN203419752U (en) * | 2013-06-28 | 2014-02-05 | 张家港化工机械股份有限公司 | Alkali liquor distribution device used for concentration of caustic soda and caustic soda flakes |
| CN103813840A (en) * | 2011-07-21 | 2014-05-21 | 蒂森克虏伯工业解决方案有限公司 | Method for concentrating aqueous lye and apparatus suitable therefor |
-
2014
- 2014-08-01 CN CN201410372834.5A patent/CN104140114B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52114598A (en) * | 1976-03-24 | 1977-09-26 | Ishikawajima Harima Heavy Ind Co Ltd | Purification of caustic soda obtained by diaphragm process |
| CN1234370A (en) * | 1998-05-01 | 1999-11-10 | 黄中杰 | Method for recovering waste liquid of industrial mixed alkali |
| CN101549912A (en) * | 2008-10-29 | 2009-10-07 | 浙江东洋环境工程有限公司 | Mercerized waste alkali recovery process and system thereof |
| CN101905894A (en) * | 2009-06-03 | 2010-12-08 | 开平富琳纺织制衣有限公司 | Method for recycling waste alkali liquor |
| CN103813840A (en) * | 2011-07-21 | 2014-05-21 | 蒂森克虏伯工业解决方案有限公司 | Method for concentrating aqueous lye and apparatus suitable therefor |
| CN102963911A (en) * | 2012-11-14 | 2013-03-13 | 中湘钨业股份有限公司 | Method of recycling residual alkali from sodium tungstate solution in tungsten smelting |
| CN203419752U (en) * | 2013-06-28 | 2014-02-05 | 张家港化工机械股份有限公司 | Alkali liquor distribution device used for concentration of caustic soda and caustic soda flakes |
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| CN104140114B (en) | 2016-01-13 |
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Address after: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Lu Applicant after: Suzhou Tian Wo Science and Technology Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Road Zhangjiagang chemical machinery Limited by Share Ltd Applicant before: Zhangjiagang Chamical Machinery Co., Ltd. |
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Effective date of registration: 20170828 Address after: 215632, Linjiang Road, Changshan village, Nansha Town, Zhangjiagang, Jiangsu, Suzhou 1, China Patentee after: Chang Hua machine (Suzhou) heavy equipment Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Lu Patentee before: Suzhou Tian Wo Science and Technology Co., Ltd. |