CN1915853A - Cleansing production method for producing furfural with zero dischrge of waste water - Google Patents
Cleansing production method for producing furfural with zero dischrge of waste water Download PDFInfo
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- CN1915853A CN1915853A CN 200610017170 CN200610017170A CN1915853A CN 1915853 A CN1915853 A CN 1915853A CN 200610017170 CN200610017170 CN 200610017170 CN 200610017170 A CN200610017170 A CN 200610017170A CN 1915853 A CN1915853 A CN 1915853A
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- waste water
- furfural
- evaporation system
- boiler
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Abstract
This invention relates to a clean method for manufacturing furfural with zero wastewater discharge. The method comprises: (1) introducing the column bottom wastewater produced by furfural manufacture into a neutralization tank, adding calcium hydroxide, and neutralizing to a pH value of 7-8; (2) introducing the neutralized wastewater into a double-effect or pleiotropic evaporation system, and evaporating by using steam generated from a boiler as the heat source; (3) introducing the wastewater steam into a furfural hydrolytic column for hydrolysis, discharging organic residues from the bottom of the double-effect or pleiotropic evaporation system, and feeding to the boiler as fuel. The method has such advantages as zero wastewater discharge, low energy consumption and no pollution.
Description
Technical field
The invention belongs to treatment process, belong to the environmental protection field furfural waste-water.
Background technology
In the existing furfural production process, produce a large amount of trade effluents, wherein contain a small amount of furfural, acetic acid, sulfuric acid and multiple organism, its acid number can reach PH2～1, the COD waste strength can reach more than 20,000, such discharge of wastewater, brings great harm for environment and ecology.
Waste water carried out biochemical treatment method after some producers adopted and reclaim acetic acid at present, though energy pollution abatement index, biochemical some practical problems of operation, adopt treatment processs such as neutralization, flocculation, precipitation, anaerobism, oxygen consumption, investment cost is big, the working cost height, and effect is not very good.
Though some waste water treatment technology can make waste discharge reach emission standard, its waste water treatment expense producer is difficult to bear, and uses the conventional improvement method of tradition to be difficult to obtain promising result, has hindered the development that furfural is produced.
Summary of the invention
The invention provides the clean preparation method of furfural production waste water zero release, bad to solve present furfural production waste water processing, problem of environment pollution caused, the technical scheme that the present invention takes is:
Comprise the following steps:
One, waste water at the bottom of the tower that produces in the furfural production is entered in the neutralization tank, add calcium hydroxide and be neutralized to pH value 7～8;
Two, the waste water after will neutralizing enters in economic benefits and social benefits or the multi-effect evaporation system and evaporates, and thermal source is the steam that boiler produces;
Three, the steam after the waste water evaporation enters in the furfural hydrolysis tower and participates in hydrolysis reaction, and organic slag is discharged through the bottom of economic benefits and social benefits or multi-effect evaporation system, sends into boiler and acts as a fuel.
The present invention also comprises: the furfural gas that the furfural hydrolysis tower produces also enters in the economic benefits and social benefits or multi-effect evaporation system in the step 2, is used for together adding the waste water behind the thermo-neutrality.
The invention has the advantages that; with in the waste water that produces in the production process and after; enter in economic benefits and social benefits or the multi-effect evaporation system and utilize again; not outside environmental emission sewage; non-wastewater discharge in accomplishing to produce utilizes furfural gas to enter to add in economic benefits and social benefits or the multi-effect evaporation system waste water behind the thermo-neutrality, has saved the energy again; be beneficial to environment protection, promote the furfurol industry benign development.
Embodiment
Embodiment 1
One, waste water at the bottom of the tower that produces in the furfural production is entered in the neutralization tank, add calcium hydroxide and be neutralized to pH value 7～8;
Two, the waste water after will neutralizing enters in economic benefits and social benefits or the multi-effect evaporation system and evaporates, and thermal source is the steam that boiler produces;
Three, the steam after the waste water evaporation enters in the furfural hydrolysis tower and participates in hydrolysis reaction, and organic slag is discharged through the bottom of economic benefits and social benefits or multi-effect evaporation system, sends into boiler and acts as a fuel.
Embodiment 2
One, waste water at the bottom of the tower that produces in the furfural production is entered in the neutralization tank, add calcium hydroxide and be neutralized to pH value 7～8;
Two, the waste water after will neutralizing enters in economic benefits and social benefits or the multi-effect evaporation system and evaporates, and thermal source is the steam that boiler produces; The furfural gas that the furfural hydrolysis tower produces also enters in economic benefits and social benefits or the multi-effect evaporation system, is used for together adding the waste water behind the thermo-neutrality;
Three, the steam after the waste water evaporation enters in the furfural hydrolysis tower and participates in hydrolysis reaction, and organic slag is discharged through the bottom of economic benefits and social benefits or multi-effect evaporation system, sends into boiler and acts as a fuel.
Claims (2)
1, a kind of clean preparation method of furfural production waste water zero release comprises the following steps;
One, waste water at the bottom of the tower that produces in the furfural production is entered in the neutralization tank, add calcium hydroxide and be neutralized to pH value 7～8;
Two, the waste water after will neutralizing enters in economic benefits and social benefits or the multi-effect evaporation system and evaporates, and thermal source is the steam that boiler produces;
Three, the steam after the waste water evaporation enters in the furfural hydrolysis tower and participates in hydrolysis reaction, and organic slag is discharged through the bottom of economic benefits and social benefits or multi-effect evaporation system, sends into boiler and acts as a fuel.
2, the clean preparation method of furfural production waste water zero release according to claim 1 is characterized in that: the furfural gas that the furfural hydrolysis tower produces also enters in the economic benefits and social benefits or multi-effect evaporation system in the step 2, is used for together adding the waste water behind the thermo-neutrality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100171706A CN100376495C (en) | 2006-09-13 | 2006-09-13 | Cleansing production method for producing furfural with zero dischrge of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100171706A CN100376495C (en) | 2006-09-13 | 2006-09-13 | Cleansing production method for producing furfural with zero dischrge of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1915853A true CN1915853A (en) | 2007-02-21 |
| CN100376495C CN100376495C (en) | 2008-03-26 |
Family
ID=37736955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100171706A Expired - Fee Related CN100376495C (en) | 2006-09-13 | 2006-09-13 | Cleansing production method for producing furfural with zero dischrge of waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376495C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129103A (en) * | 2017-05-09 | 2017-09-05 | 济南大学 | A kind of furfural production waste water integrated treatment utilizes technique and method |
| CN110054336A (en) * | 2019-04-16 | 2019-07-26 | 南京工业大学 | Method for treating low-concentration acetic acid wastewater containing inorganic metal ions and organic impurities |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210911C2 (en) * | 1982-03-25 | 1985-10-31 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Process for obtaining furfural-degrading bacteria, bacteria obtainable thereafter and their use |
| US4917769A (en) * | 1988-05-02 | 1990-04-17 | Oo Chemicals, Inc. | Distillation apparatus for removal of volatile acids from aqueous solutions |
| CN1141302C (en) * | 2001-03-08 | 2004-03-10 | 水志良 | Process for treating waste water containing furaldehyde and recovering furaldehyde and acetic acid |
| CN1282615C (en) * | 2004-12-24 | 2006-11-01 | 长春市佳辰环保设备有限公司 | Process for treating industrial waste water from production of furfural |
| CN1314647C (en) * | 2005-07-13 | 2007-05-09 | 杨正学 | Furfural waste water disposal method capable of producing acetone |
-
2006
- 2006-09-13 CN CNB2006100171706A patent/CN100376495C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129103A (en) * | 2017-05-09 | 2017-09-05 | 济南大学 | A kind of furfural production waste water integrated treatment utilizes technique and method |
| CN107129103B (en) * | 2017-05-09 | 2020-06-09 | 济南大学 | Comprehensive treatment and utilization process and method for furfural production wastewater |
| CN110054336A (en) * | 2019-04-16 | 2019-07-26 | 南京工业大学 | Method for treating low-concentration acetic acid wastewater containing inorganic metal ions and organic impurities |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100376495C (en) | 2008-03-26 |
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Granted publication date: 20080326 Termination date: 20091013 |