CN104445698A - Pyrolysis treatment method of phenol-containing wastewater generated by gasification of crushed coal - Google Patents
Pyrolysis treatment method of phenol-containing wastewater generated by gasification of crushed coal Download PDFInfo
- Publication number
- CN104445698A CN104445698A CN201410749555.6A CN201410749555A CN104445698A CN 104445698 A CN104445698 A CN 104445698A CN 201410749555 A CN201410749555 A CN 201410749555A CN 104445698 A CN104445698 A CN 104445698A
- Authority
- CN
- China
- Prior art keywords
- phenol
- waste water
- phenolic wastewater
- containing wastewater
- wastewater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/024—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/10—Separation of ammonia from ammonia liquors, e.g. gas liquors
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/72—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention discloses a pyrolysis treatment method of phenol-containing wastewater. The pyrolysis treatment method comprises the following steps: (1) removing dust of wastewater generated by pressurization and gasification of crushed coal, and separating and removing tar and medium oil; and (2) processing the phenol-containing wastewater without the tar and the medium oil in two paths, namely recycling phenolamine of one path of wastewater by using a phenolamine recycling device, and filtering the other path of phenol-containing wastewater by using a filter, introducing the wastewater into a storage tank after regulating via a valve, and conveying the phenol-containing wastewater in the storage tank to a stage of pressing-gasifying and chilling water-chilled powdered coal by a booster pump for implementing high-temperature pyrolysis of the phenol-containing wastewater. By virtue of the method, the treatment amount of the phenol-containing wastewater generated by pressure gasification of crushed coal is reduced.
Description
Technical field
The present invention relates to the pyrolysis processing that crushed coal pressure gasifying produces phenolic wastewater, refer more particularly to the pyrolysis of fixed bed crushed coal pressure gasifying waste water and utilize.
Background technology
Fixed bed crushed coal pressure gasifying technique is high because of methane content in synthetic gas, reduces the load of follow-up methanation unit, improves the heating rate of coal preparing natural gas process, reduces construction investment.Crushed coal pressure gasifying technology maturation, simple to operate, invest low, be also that in all large-scale coal gasifying process, oxygen consumption is minimum simultaneously, the empty point of coal gasifying process that investment economizes most, process cost is minimum.Coal adaptability is strong, and almost can gasify all coals, especially can adapt to the coal as raw material inferior of high-moisture, high ash content, high ash melting point, and not by the restriction of sludge forming performance.
The shortcoming of crushed coal pressure gasifying technology is that steam consumption quantity is large, and the large and complicated component of sewage quantity, control expense is high.Containing pollutents such as a large amount of phenol, ammonia, tar class, sulfur-bearing and carbon containing sour gas in a large amount of high pollution waste water, COD is generally at more than 20000mg/L, the mode generally adopting chemical industry treatment scheme to combine with biochemical treatment both at home and abroad processes it, but intractability is large, cost high (1 ton of phenol ammonia waste water processing cost is on average at 40 ~ 60 yuan/ton), total phenol content higher (generally at more than 400mg/l, during fluctuation of operating conditions, content can be higher) in the outer discharge water of gasification.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind for the treatment of capacity reducing phenolic wastewater in smashed coal pressure gasification is provided, meet the broken coal gasification phenolic wastewater pyrolysis treating method that descending water Quench fine coal gasification process Quench requires simultaneously.
A kind of phenolic wastewater pyrolysis treating method of the present invention, it comprises the following steps:
(1) waste water of crushed coal pressure gasifying generation is after dedusting, based on the density variation separation removal tar between tar, oil and aqueous phase and middle oil;
(2) phenolic wastewater removed after tar and middle oil divides two-way process:
One road waste water goes phenol ammonia recovery unit to carry out phenol recovery ammonia, concrete steps are: (a) waste water is sent into extracting tower and the sour gas in waste water and ammoniacal liquor remove by deammoniation tower, sour gas is sent into incinerator and is burned, liquefied ammonia passes into purification tower and rectifying tower is purified further, obtains byproduct liquefied ammonia; B phenolic wastewater after depickling deamination is sent into extraction tower by (), by the phenol component extracting in waste water out, through dehydration and purification, obtain byproduct crude phenols;
Another road phenolic wastewater is filtered, and by entering in storage tank after valve regulated, the phenolic wastewater in storage tank is transported in the powdered coal pressuring gasified Quench section of water Quench through force (forcing) pump again, realizes the high temperature pyrolysis containing phenol ammonia waste water.
The invention has the beneficial effects as follows:
To the powdered coal pressuring gasified stove of descending water Quench, keep in original chilled water flow process, by passing into a certain amount of pressurization phenolic wastewater in Quench section, effectively can decompose the organism in coal gas waste, reduce the sewage load of broken coal gasification, reduce the supplies consumption such as extraction agent and associated steam, reduce running cost.Adopt present method, by crushed coal pressure gasifying combine mode powdered coal pressuring gasified with descending water Quench, reduce the treatment capacity of phenolic wastewater in smashed coal pressure gasification, meet the requirement of coal gasification Quench simultaneously.
Accompanying drawing explanation
Accompanying drawing is the schematic flow sheet of a kind of phenolic wastewater pyrolysis treating method of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of phenolic wastewater pyrolysis treating method of the present invention as shown in drawings, it comprises the following steps:
(1) waste water of crushed coal pressure gasifying generation is after dedusting, based on the density variation separation removal tar between tar, oil and aqueous phase and middle oil;
(2) phenolic wastewater removed after tar and middle oil divides two-way process:
One road waste water goes phenol ammonia recovery unit to carry out phenol recovery ammonia, concrete steps are: (a) waste water is sent into extracting tower and the sour gas in waste water and ammoniacal liquor remove by deammoniation tower, sour gas is sent into incinerator and is burned, liquefied ammonia passes into purification tower and rectifying tower is purified further, obtains byproduct liquefied ammonia; B phenolic wastewater after depickling deamination is sent into extraction tower by (), by the phenol component extracting in waste water out, through dehydration and purification, obtain byproduct crude phenols; The extraction agent of extraction phenol component can adopt Di Iso Propyl Ether or hexone etc.;
Another road phenolic wastewater is filtered, and by entering in storage tank after valve regulated, the phenolic wastewater in storage tank is transported in the powdered coal pressuring gasified Quench section of water Quench through force (forcing) pump again, realizes the high temperature pyrolysis containing phenol ammonia waste water.
The concrete structure realizing the phenolic wastewater pyrolysis treatment device of the inventive method can comprise phenol ammonia recovery unit and phenolic wastewater is transported to the powdered coal pressuring gasified Quench segment structure of water Quench:
Wherein phenol ammonia recovery unit inlet line is connected with waste water house steward by the first arm.
Phenolic wastewater is transported to the powdered coal pressuring gasified Quench segment structure of water Quench and comprises a storage tank 1, described storage tank is for removing the broken coal gasification waste water temporary reservoir after tar and middle oil, described storage tank 1 is provided with liquidometer L1, described storage tank import by be equipped with successively main valve BV1, first and second strainer SV1, the SV2 that are arranged in parallel, the first variable valve FV1 and first-class gauge F1 the second arm be connected with coal gas waste house steward, the outlet of described storage tank is divided into two-way in parallel, one tunnel is successively by the first entrance hand valve BV2, 3rd strainer SV3, first sewage force (forcing) pump P1, first tensimeter PI and the first outlet hand valve BV4 and the first non-return valve IV1 and the defensive position valve connection outlet house steward thereof be arranged in parallel, another road is successively by the second entrance hand valve BV3, 4th strainer SV4, second sewage force (forcing) pump P2, second tensimeter PII and the second outlet hand valve BV5 and the second non-return valve IV2 and the defensive position valve connection outlet house steward thereof be arranged in parallel, described outlet header is equipped with under meter F2 and pressure warning unit PIII.The outlet of described outlet header connects the hand valve BV10 of vaporized stove;
Reflux pipeline, described reflux pipeline one end is connected with the pipeline section of the under meter F2 liquid outlet of outlet header and the other end is connected the water return outlet of pipeline and the storage tank be arranged in parallel successively; At the described pipeline be arranged in parallel, the 5th water inlet hand valve BV6, the second variable valve FV2 and defensive position valve BV8 are housed on the way, 6th water inlet hand valve BV7 and the 7th water inlet hand valve BV9 is housed on the way, as by-pass hand valve the another of the described pipeline be arranged in parallel.Output flow signal is to Controlling System respectively for described first-class gauge F1 and second gauge F2, and described Controlling System controls the aperture of two variable valve to the first variable valve FV1 and the second variable valve FV2 according to flow signal output control signal.Outlet header's pressure of the first pump P1 and the second pump P2 is indicated by tensimeter PIII.
The working method of this structure:
(1) first the main valve BV1 on the second arm, the first variable valve FV1 and vaporized stove hand valve BV10 are closed when vapourizing furnace is driven.
(2) gasifier operation steadily after, slowly open main valve BV1, regulate the first variable valve FV1 gradually, will containing in phenol coal gas waste introducing storage tank.After storage tank liquid level reaches 50 ~ 60%, close the first variable valve FV1.Open reflux pipeline the 5th water intaking valve BV6 and defensive position valve BV8, closing volume pipeline by-pass the 6th water inlet hand valve BV7 and the 7th water inlet hand valve BV9, by the second variable valve FV2 manual-lock.
(3) the second entrance hand valve BV2 and the 3rd entrance hand valve BV3 is opened, close the first outlet hand valve BV4 (or second outlet hand valve BV5), start the first sewage force (forcing) pump P1 (or second sewage force (forcing) pump P2), slowly open the first non-return valve IV1 defensive position valve (or second non-return valve IV2 defensive position valve), progressively regulate the second variable valve FV2 aperture, after making second gauge F2 flow reach set(ting)value, the second variable valve FV2 controller is got to " automatically " and control.
(4) slowly open vaporized stove hand valve BV10, until standard-sized sheet, will introduce in vapourizing furnace Quench section containing phenol coal gas waste.Slowly open the first variable valve FV1, keep the liquid level of storage tank 1 50% ~ 60%.
Claims (2)
1. a phenolic wastewater pyrolysis treating method, is characterized in that it comprises the following steps:
(1) waste water of crushed coal pressure gasifying generation is after dedusting, based on the density variation separation removal tar between tar, oil and aqueous phase and middle oil;
(2) phenolic wastewater removed after tar and middle oil divides two-way process:
One road waste water goes phenol ammonia recovery unit to carry out phenol recovery ammonia, concrete steps are: (a) waste water is sent into extracting tower and the sour gas in waste water and ammoniacal liquor remove by deammoniation tower, sour gas is sent into incinerator and is burned, liquefied ammonia passes into purification tower and rectifying tower is purified further, obtains byproduct liquefied ammonia; B phenolic wastewater after depickling deamination is sent into extraction tower by (), by the phenol component extracting in waste water out, through dehydration and purification, obtain byproduct crude phenols;
Another road phenolic wastewater is filtered, and by entering in storage tank after valve regulated, the phenolic wastewater in storage tank is transported in the powdered coal pressuring gasified Quench section of water Quench through force (forcing) pump again, realizes the high temperature pyrolysis containing phenol ammonia waste water.
2. phenolic wastewater pyrolysis treating method according to claim 1, is characterized in that: the extraction agent of extraction phenol component adopts Di Iso Propyl Ether or hexone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749555.6A CN104445698B (en) | 2014-12-09 | 2014-12-09 | A kind of broken coal gasification phenolic wastewater pyrolysis treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749555.6A CN104445698B (en) | 2014-12-09 | 2014-12-09 | A kind of broken coal gasification phenolic wastewater pyrolysis treating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104445698A true CN104445698A (en) | 2015-03-25 |
| CN104445698B CN104445698B (en) | 2016-02-03 |
Family
ID=52892556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410749555.6A Active CN104445698B (en) | 2014-12-09 | 2014-12-09 | A kind of broken coal gasification phenolic wastewater pyrolysis treating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104445698B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317973A (en) * | 2021-12-17 | 2022-04-12 | 北京工业大学 | Pyrolysis recovery method for organic components of waste light-emitting diodes |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059165A (en) * | 1991-04-01 | 1992-03-04 | 陈绍维 | Secondary reformer gas station phenol water treatment technique and device |
| CN1162624A (en) * | 1996-04-16 | 1997-10-22 | 陈绍维 | Process of two stage furnace water gas plant and treatment of phenol containing water |
| CN101062796A (en) * | 2007-04-18 | 2007-10-31 | 淄博万丰煤气设备有限公司 | Phenol water treatment technique and device for gas furnace |
| DE19608463B4 (en) * | 1996-03-02 | 2008-08-14 | Sasol- Lurgi Technology Co.(Pty)Ltd. | Process for extracting phenols from a phenol-containing wastewater by means of a solvent mixture |
| CN102259943A (en) * | 2011-07-21 | 2011-11-30 | 天津市昊永化工科技有限公司 | Energy-saving method for recycling wastewater containing phenol and ammonia |
| CN102465043A (en) * | 2010-11-01 | 2012-05-23 | 中国科学院过程工程研究所 | Multi-section fractional pyrolysis gasification device and method for solid fuel |
| CN103880242A (en) * | 2014-03-13 | 2014-06-25 | 中钢集团鞍山热能研究院有限公司 | Advanced treatment process of coal chemical industry wastewater |
| CN103965970A (en) * | 2013-02-05 | 2014-08-06 | 栾涛 | Treatment method for phenolic water produced by gas producer |
-
2014
- 2014-12-09 CN CN201410749555.6A patent/CN104445698B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059165A (en) * | 1991-04-01 | 1992-03-04 | 陈绍维 | Secondary reformer gas station phenol water treatment technique and device |
| DE19608463B4 (en) * | 1996-03-02 | 2008-08-14 | Sasol- Lurgi Technology Co.(Pty)Ltd. | Process for extracting phenols from a phenol-containing wastewater by means of a solvent mixture |
| CN1162624A (en) * | 1996-04-16 | 1997-10-22 | 陈绍维 | Process of two stage furnace water gas plant and treatment of phenol containing water |
| CN101062796A (en) * | 2007-04-18 | 2007-10-31 | 淄博万丰煤气设备有限公司 | Phenol water treatment technique and device for gas furnace |
| CN102465043A (en) * | 2010-11-01 | 2012-05-23 | 中国科学院过程工程研究所 | Multi-section fractional pyrolysis gasification device and method for solid fuel |
| CN102259943A (en) * | 2011-07-21 | 2011-11-30 | 天津市昊永化工科技有限公司 | Energy-saving method for recycling wastewater containing phenol and ammonia |
| CN103965970A (en) * | 2013-02-05 | 2014-08-06 | 栾涛 | Treatment method for phenolic water produced by gas producer |
| CN103880242A (en) * | 2014-03-13 | 2014-06-25 | 中钢集团鞍山热能研究院有限公司 | Advanced treatment process of coal chemical industry wastewater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317973A (en) * | 2021-12-17 | 2022-04-12 | 北京工业大学 | Pyrolysis recovery method for organic components of waste light-emitting diodes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104445698B (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5727903A (en) | Process and apparatus for purification and compression of raw landfill gas for vehicle fuel | |
| CN103435005B (en) | A kind of synthesis gas washing treatment process | |
| CN104004557B (en) | Crushed coal pressure gasifying associating coal water slurry gasification produces the method for coal preparing natural gas | |
| CN110282810A (en) | A kind of graywater treating method in coal gasification scouring water recycling system | |
| CN211098387U (en) | Comprehensive treatment system for tail gas in acid water tank area of refinery plant | |
| CN104445698B (en) | A kind of broken coal gasification phenolic wastewater pyrolysis treating method | |
| CN101613777B (en) | Process for backblowing and deashing through bag-type dust remover by blast furnace dry method | |
| CN103466873A (en) | Method for processing sewage with high-concentration phenol and ammonia | |
| CN203781978U (en) | Advanced treatment equipment for coal chemical industrial wastewater | |
| CN109384340A (en) | Gasification waste water composite processing system and method | |
| CN204384906U (en) | A kind of broken coal gasification phenolic wastewater pyrolysis treatment device | |
| CN205740923U (en) | The equipment that technique waste water containing solid is processed | |
| CN214060265U (en) | Crushed coal pressure gasification gas water separation and recycling system | |
| CN202208705U (en) | Device for preparing synthesis gas or hydrogen through BGL pressurizing molten slag gasification with pure oxygen non-catalytic partial oxidation | |
| CN107902804A (en) | A kind of oil field produced water treatment facilities | |
| CN211159197U (en) | Non-condensable gas recycling device in slag water treatment system | |
| JP5112664B2 (en) | Methane recovery method and digestion gas purification device | |
| CN103523836B (en) | A kind of sulfur-containing wasting alkali liquid processing method | |
| CN107098525A (en) | Heisui River coupling processing device and method | |
| CN208279584U (en) | Low-level oxidation method waste machine oil regeneration device | |
| CN106365372A (en) | Solid-particle-containing acidic black water treatment method | |
| CN101209882A (en) | Black pigment water separation and dehydrogenating method | |
| CN219526307U (en) | Pre-extraction phenol recovery system | |
| CN206173277U (en) | A lime set collection device for dry pulverized coal gasification system | |
| US20130168333A1 (en) | Circulation of process waters in entrained-bed gasification under process pressure with a pressure filtration unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |