CN103030183A - Device and method for recycling waste water for washing plate frame for pentaerythritol - Google Patents
Device and method for recycling waste water for washing plate frame for pentaerythritol Download PDFInfo
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- CN103030183A CN103030183A CN2012105729682A CN201210572968A CN103030183A CN 103030183 A CN103030183 A CN 103030183A CN 2012105729682 A CN2012105729682 A CN 2012105729682A CN 201210572968 A CN201210572968 A CN 201210572968A CN 103030183 A CN103030183 A CN 103030183A
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- material still
- waste water
- tetramethylolmethane
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Abstract
The invention provides a device and a method for recycling waste water for washing a plate frame for pentaerythritol. The treatment method comprises the following steps that 1), the waste water for washing the filter plate frame is collected and then introduced into a dissolving kettle, the dissolving kettle is kept at 80-100 DEG C, liquid in the dissolving kettle enters the filter plate frame through a pump, the filter plate frame is washed repeatedly by the liquid, circulation is formed between the filter plate frame and the dissolving kettle, the concentration of pentaerythritol in the waste water is increased, and the concentration of pentaerythritol in the liquid in the dissolving kettle is detected; and 2), when the mass concentration of pentaerythritol reaches 5-20%, a liquid material is introduced into a hydrolysis kettle through a dissolving kettle pump, acid is added to the hydrolysis kettle, stirring is conducted, the temperature rises to 90-110 DEG C and is kept for 1-2h, methanol and methanal are discharged, and the rest of liquid is subjected to pentaerythritol separation and purification. According to the device and the method, the waste water for washing the plate frame in pentaerythritol production is collected, and then hydrolyzed and recycled after reaching a certain concentration, and no secondary pollution is generated.
Description
Technical field
The present invention relates to a kind of tetramethylolmethane and wash the device and method that the sheet frame waste water reclamation utilizes.
Background technology
An important step is filtered exactly in the existing Production of pentaerythritol, wherein once mother liquor filtration, secondary mother liquid filtration, clear liquid filtration etc., filtrate after the filtration and filter cake are waited until the subsequent processing processing, but on filter cloth, speckle with a lot of solid materialss, affect next filtration velocity and precision, reuse after need to be with a large amount of hot water that filter cloth washing is clean.These waste water that clean behind filter clothes are low because of material concentrations such as tetramethylolmethanes wherein; the foreign matter contents such as acetal, tetramethylolmethane methyl ether are high; directly recovery is often lost more than gain; affect the production of tetramethylolmethane; cause the tetramethylolmethane quality to descend; every consumption such as steam is risen; therefore general producer is direct emission treatment all; affect on the one hand environment protection; cause on the other hand the high expensive of Production of pentaerythritol; therefore how effectively to handle this waste water well, can either effectively reduce the pressure of environmental protection, also will produce certain economic benefit simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of tetramethylolmethane and wash the device and method that the sheet frame waste water reclamation utilizes, wash sheet frame waste water by collecting in the Production of pentaerythritol, reach finite concentration after hydrolysis recycle, turn waste into wealth, and do not produce secondary pollution.
The object of the present invention is achieved like this: a kind of tetramethylolmethane is washed the device that the sheet frame waste water reclamation utilizes, and comprises the filtration sheet frame, molten material still and the hydrolysis kettle that connect successively, filters between sheet frame and the molten material still to form the recycle system.
The bottom of described molten material still is connected respectively to the top of filtering sheet frame and molten material still by pipeline, and molten material still bottom pipe is provided with molten material still pump.
Described hydrolysis kettle is provided with outer circulation pipeline and hydrolysis kettle pump, and the hydrolysis kettle top also is provided with vapor pipe and feed-pipe.
Described molten material still and hydrolysis kettle are equipped with water back.
A kind of tetramethylolmethane is washed the method that the sheet frame waste water reclamation utilizes, and may further comprise the steps:
1) molten material still will be introduced after the wastewater collection of cleaning and filtering sheet frame, keep 80-100 ℃ of molten material still temperature, liquid enters by pump and filters in the sheet frame repeatedly cleaning and filtering sheet frame in the molten material still, filtering formation circulation between sheet frame and the molten material still, increase tetramethylolmethane in the waste water concentration, detect the concentration of tetramethylolmethane in the molten material still liquid;
When 2) mass concentration of tetramethylolmethane reaches 5-20%, liquid material is introduced in the hydrolysis kettle by molten material still pump, to the hydrolysis kettle acid adding, the pH value is between 2.0-2.5 in the controlled hydrolysis still, be warmed up to 90-110 ℃, kept temperature 1-2 hour, and then discharged methyl alcohol and formaldehyde, remaining liquid carries out the separating-purifying of tetramethylolmethane.
Described acid is formic acid, phosphoric acid or hydrochloric acid.
A kind of tetramethylolmethane provided by the invention is washed the device and method that the sheet frame waste water reclamation utilizes, technical process is short, filter operation in the Production of pentaerythritol can be washed the utilization of sheet frame waste water reclamation, turns waste into wealth, and do not produce secondary pollution, accomplished the comprehensive utilization of resource; The device that adopts only need increase molten material still, hydrolysis kettle and recycle pump and just can reach and wash the purpose that the sheet frame waste water reclamation utilizes, and drops into littlely, and production cost is low, and crucible, hydrolysis kettle are equipped with self outer circulation pipeline in addition, can allow material fully dissolve.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is structural representation of the present invention.
Among the figure, 1, filter sheet frame, 2, molten material still, 3, hydrolysis kettle, 4-1, molten material still pump, 4-2, hydrolysis kettle pump.
Embodiment
A kind of tetramethylolmethane is washed the device that the sheet frame waste water reclamation utilizes, and comprises the filtration sheet frame 1, molten material still 2 and the hydrolysis kettle 3 that connect successively, filters between sheet frame 1 and the molten material still 2 to form the recycle system.
The bottom of described molten material still is connected respectively to the top of filtering sheet frame and molten material still by pipeline, and molten material still bottom pipe is provided with molten material still pump 4-1.
Described hydrolysis kettle is provided with outer circulation pipeline and hydrolysis kettle pump 4-2, and the hydrolysis kettle top also is provided with vapor pipe and feed-pipe.
Described molten material still and hydrolysis kettle are equipped with water back, pass into steam in water back it is heated.
A kind of tetramethylolmethane is washed the method that the sheet frame waste water reclamation utilizes, and may further comprise the steps:
1) with introducing molten material still after the wastewater collection of cleaning and filtering sheet frame, keep 80-100 ℃ of molten material still temperature, a liquid part enters by pump and filters in the sheet frame repeatedly cleaning and filtering sheet frame in the molten material still, forms circulation between sheet frame and the molten material still filtering; Another part directly circulates from the top of molten material still by pipeline, increase tetramethylolmethane in the waste water concentration, detect the concentration of tetramethylolmethane in the molten material still liquid;
When 2) mass concentration of this season penta tetrol reaches 5-20%, liquid material is introduced in the hydrolysis kettle by molten material still pump, to the hydrolysis kettle acid adding, the pH value is between 2.0-2.5 in the controlled hydrolysis still, be warmed up to 90-110 ℃, kept temperature 1-2 hour, and then discharged methyl alcohol and formaldehyde, remaining liquid carries out the separating-purifying of tetramethylolmethane.
Claims (6)
1. a tetramethylolmethane is washed the device that the sheet frame waste water reclamation utilizes, and it is characterized in that: comprise the filtration sheet frame, molten material still and the hydrolysis kettle that connect successively, form the recycle system between filtration sheet frame and the molten material still.
2. a kind of tetramethylolmethane according to claim 1 is washed the device that the sheet frame waste water reclamation utilizes, and it is characterized in that: the bottom of described molten material still is connected respectively to the top of filtering sheet frame and molten material still by pipeline, and molten material still bottom pipe is provided with molten material still pump.
3. a kind of tetramethylolmethane according to claim 1 is washed the device that the sheet frame waste water reclamation utilizes, and it is characterized in that: described hydrolysis kettle is provided with outer circulation pipeline and hydrolysis kettle pump, and the hydrolysis kettle top also is provided with vapor pipe and feed-pipe.
4. a kind of tetramethylolmethane according to claim 1 is washed the device that the sheet frame waste water reclamation utilizes, and it is characterized in that: described molten material still and hydrolysis kettle are equipped with water back.
5. a tetramethylolmethane is washed the method that the sheet frame waste water reclamation utilizes, and it is characterized in that, may further comprise the steps:
1) molten material still will be introduced after the wastewater collection of cleaning and filtering sheet frame, keep 80-100 ℃ of molten material still temperature, liquid enters by pump and filters in the sheet frame repeatedly cleaning and filtering sheet frame in the molten material still, filtering formation circulation between sheet frame and the molten material still, increase tetramethylolmethane in the waste water concentration, detect the concentration of tetramethylolmethane in the molten material still liquid;
When 2) mass concentration of tetramethylolmethane reaches 5-20%, liquid material is introduced in the hydrolysis kettle by molten material still pump, to the hydrolysis kettle acid adding, the pH value is between 2.0-2.5 in the controlled hydrolysis still, stirring is warmed up to 90-110 ℃, kept temperature 1-2 hour, and then discharged methyl alcohol and formaldehyde, remaining liquid carries out the separating-purifying of tetramethylolmethane.
6. a kind of tetramethylolmethane according to claim 5 is washed the method that the sheet frame waste water reclamation utilizes, and it is characterized in that: described acid is formic acid, phosphoric acid or hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572968.2A CN103030183B (en) | 2011-12-27 | 2012-12-26 | Device and method for recycling waste water for washing plate frame for pentaerythritol |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110442901 | 2011-12-27 | ||
| CN201110442901.2 | 2011-12-27 | ||
| CN201210572968.2A CN103030183B (en) | 2011-12-27 | 2012-12-26 | Device and method for recycling waste water for washing plate frame for pentaerythritol |
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| Publication Number | Publication Date |
|---|---|
| CN103030183A true CN103030183A (en) | 2013-04-10 |
| CN103030183B CN103030183B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210572968.2A Active CN103030183B (en) | 2011-12-27 | 2012-12-26 | Device and method for recycling waste water for washing plate frame for pentaerythritol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365340A (en) * | 2016-08-30 | 2017-02-01 | 安徽金禾实业股份有限公司 | Pentaerythritol vibrating membrane sewage treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277620A (en) * | 1980-02-29 | 1981-07-07 | Virginia Chemicals Inc. | Byproduct recovery from a pentaerythritol waste stream |
| JPH0616585A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Production of dipentaerythritol |
| CN1091723A (en) * | 1993-03-01 | 1994-09-07 | 衡阳市环境保护科学研究所 | The method of wastewater treatment that contains tetramethylolmethane |
| CN101696158A (en) * | 2009-09-30 | 2010-04-21 | 濮阳市鹏鑫化工有限公司 | Method for preparing pentaerythritol and dipentaerythritol |
| CN102070413A (en) * | 2010-12-23 | 2011-05-25 | 安徽金禾实业股份有限公司 | Method for synthesizing dipentaerythritol |
-
2012
- 2012-12-26 CN CN201210572968.2A patent/CN103030183B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277620A (en) * | 1980-02-29 | 1981-07-07 | Virginia Chemicals Inc. | Byproduct recovery from a pentaerythritol waste stream |
| JPH0616585A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Production of dipentaerythritol |
| CN1091723A (en) * | 1993-03-01 | 1994-09-07 | 衡阳市环境保护科学研究所 | The method of wastewater treatment that contains tetramethylolmethane |
| CN101696158A (en) * | 2009-09-30 | 2010-04-21 | 濮阳市鹏鑫化工有限公司 | Method for preparing pentaerythritol and dipentaerythritol |
| CN102070413A (en) * | 2010-12-23 | 2011-05-25 | 安徽金禾实业股份有限公司 | Method for synthesizing dipentaerythritol |
Non-Patent Citations (2)
| Title |
|---|
| 程丽敏: "加压水解法处理回收季戊四醇及母液", 《河南化工》 * |
| 程丽敏: "回收季戊四醇的处理方法", 《河南化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365340A (en) * | 2016-08-30 | 2017-02-01 | 安徽金禾实业股份有限公司 | Pentaerythritol vibrating membrane sewage treatment method |
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| CN103030183B (en) | 2015-01-14 |
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