CN109264846A - A kind of processing unit and method of chemical waste alkaline liquor - Google Patents
A kind of processing unit and method of chemical waste alkaline liquor Download PDFInfo
- Publication number
- CN109264846A CN109264846A CN201811019313.6A CN201811019313A CN109264846A CN 109264846 A CN109264846 A CN 109264846A CN 201811019313 A CN201811019313 A CN 201811019313A CN 109264846 A CN109264846 A CN 109264846A
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- tank
- reactor
- chemical waste
- alkaline liquor
- waste alkaline
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- 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
- C02F2101/101—Sulfur compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of processing unit of chemical waste alkaline liquor and method, the processing unit of chemical waste alkaline liquor, including lye adjust tank, feed pump, dosing pump, reactor tank, neutralization chamber, jet reactor, circulating pump, gas handling system, heating system etc..The present invention utilizes jet-flow aeration principle, prepares high-efficiency jet reactor, under the action of catalyst, uses air for oxidant, by the oxidizing sodium sulphide in lye to sodium sulphate under atmospheric low-temperature, sulfur content is down to 30ppm hereinafter, sodium sulphate selectively reaches 98% or more.The advantages that present invention has process simple, runs easy to operate, high treating effect, at low cost, economic and environment-friendly.
Description
Technical field
The present invention relates to chemical wastewater treatment technical fields, processing unit and side more particularly, to a kind of chemical waste alkaline liquor
Method.
Background technique
Spent lye generally generates in enterprises' productions such as petrochemical industry, New Coal Chemical and extraordinary chemical industry, and discharge amount is big,
Complicated component, sulfide, mercaptan, acylate, creosote, oil containing higher concentration and other similar organic and inorganization
Object is closed, there is dark, stench and strong corrosive, belong to hazardous waste.Such waste water should not be directly discharged into the sewage of manufacturing enterprise
Centralized processing system is pre-processed.
It is oxidizing process that spent lye, which is handled most commonly seen, be under certain temperature, pressure, using catalyst to spent lye into
The processing of row catalytic air oxidation, finally converts thiosulfate or sulfate for toxic sulfide.As disclosed in US4855123
A kind of method for oxidation is the catalysis oxygen carried out under conditions of 50~130 DEG C, 0~980KPa using non-impregnated C catalyst
Change, by oxidizing sodium sulphide at sodium polysulfide and sodium thiosulfate, this method cannot be fundamentally converted to sulfur-containing compound
The form of stable sulfate.It is such as disclosed in CN101143746A patent text and uses support type Cobalt Phthalocyanine catalytic oxidation desulfurization,
Using tower reactor, it is improved sulfide desulfuration efficiency, but product is also thiosulfate.For another example CN1579956A is special
It in the presence of mentioning iron-containing catalyst in sharp text, is stirred to react with compressed air, sulfide can be made to be down to 45mg/L hereinafter, but should
Method is still to convert thiosulfate for most of sulphur, and catalyst amount is big in treatment process, is solidliquid mixture, operation
Program is complicated.For another example method disclosed in CN10178068A patent text is to make catalyst using bismuthous compound, normal
Sulfide or thiosulfate are completely oxidized to sulfate under temperature, normal pressure, the dosage of catalyst is larger in treatment process, and needs
PH is repeatedly adjusted repeatedly and introduces a large amount of water, generates a large amount of salt, increase filter device is also needed that catalyst, process need to be recycled
It is excessively complicated.It is using metal catalytic for another the method addressed in the patent text of Publication No. US5207927, US5470486
Agent under the conditions of 1000KPa or so, is oxidation of the sulfide into sulfate at 150 DEG C.High temperature, high-pressure oxidation method are used at present, though
Preferable oxidation processes effect can be so obtained, but the engineering equipment investment of device is big, operating cost is high, processing cost is high, is
System operation, management are also extremely complex.And low temperature oxidation technology, there are oxidation rate is slow, the problems such as oxidation is not thorough, after will lead to
Continuous a series of problems, for example salt complicated composition, be not readily separated, generate solid waste etc..
Summary of the invention
The object of the present invention is to provide a kind of processing unit of chemical waste alkaline liquor and methods, have process simple, operation behaviour
Facilitate, high treating effect is at low cost, it is economic and environment-friendly the features such as.
The purpose of the present invention is being achieved through the following technical solutions, a kind of processing unit of chemical waste alkaline liquor, including adjust
Save tank, feed pump, catalyst storage tank, metering pump, mixer, circulating pump, jet reactor, reactor tank, moisture trap, air blast
Machine, gas flowmeter and fluid reservoir；
It adjusts tank, feed pump and mixer to be sequentially connected by lye feed pipe, catalyst storage tank, metering pump and mixer
It is sequentially connected by catalyst charge pipe, the bottom connection of mixer and jet reactor, one end of circulating pump and mixer connect
It connects, the other end is connected to the bottom of reactor tank, and jet reactor is located at the inside of reactor tank, and air blower passes through with gas flowmeter
Tracheae connection, and tracheae passes through reactor tank and the top of jet reactor connects, moisture trap is located at the top of reactor tank, and
It is connected to by escape pipe with the top of reactor tank, fluid reservoir is connected to by outlet tube with the side wall of reactor tank.
Preferably, it adjusts and is equipped with the first valve between tank and feed pump, second is equipped between circulating pump and jet reactor
Valve is equipped with needle-valve between jet reactor and gas flowmeter.
Preferably, outlet tube is located at reaction pot sidewall close to one end of moisture trap.
Preferably, steam heating or electric heating can be used in reactor tank.
Preferably, reactor tank includes that single tank operation or multiple tank operation, multiple tank operate to series operation or parallel running.
A kind of processing method of the processing unit of chemical waste alkaline liquor, comprising the following steps:
The chemical waste alkaline liquor adjusted in tank is passed through in mixer according to design discharge by feed pump and lye feed pipe；
The catalyst stored in catalyst storage tank is passed through by metering pump and catalyst charge pipe according to setting metering mixed
In clutch；
Chemical waste alkaline liquor and catalyst are mixed in a mixer in laggard incident flow reactor, while starting air blower, will
Air-flow is passed through in jet reactor by gas flowmeter and tracheae；
Reactor tank is heated, chemical waste alkaline liquor carries out oxidation reaction in reactor tank and forms thiosulfuric acid and sodium sulphate, not instead
Enter circulating pump from reaction pot bottom after answering complete chemical waste alkaline liquor degassed, be passed through in jet reactor again, realizes object
Circulation in material；
The chemical waste alkaline liquor of complete oxidation is gradually increasing in reactor tank, realizes gas-liquid separation, complete oxidation is sulphur
The chemical waste alkaline liquor of sour sodium is expelled in fluid reservoir by outlet tube, and remaining gas drains into outside through moisture trap.
Preferably, the flow of chemical waste alkaline liquor is 0.1-20m3/h。
Preferably, according to chemical waste alkaline liquor liquid volume ratio, catalyst dosage is 0.5-5 ‰.
Preferably, the heating temperature of reactor tank is 30-70 DEG C, and the heating reaction response time is 30-100h.
The beneficial effects of the present invention are: using air for oxidant, using microbubble gas distribution fluidics, strengthens gas-liquid and pass
Matter, oxidizing sodium sulphide in chemical waste alkaline liquor is reduced to 30ppm hereinafter, and be completely converted into sodium sulphate, have process simple, fortune
Row easy to operate, high treating effect, it is at low cost, it is economic and environment-friendly the advantages that.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the processing device structure diagram of chemical waste alkaline liquor of the present invention.
Specific embodiment
In order to enable those skilled in the art to more fully understand, technical solution of the present invention is practiced, with reference to the accompanying drawing
The present invention is further described with specific embodiment, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
The present invention provides a kind of processing unit of chemical waste alkaline liquor, including adjust tank 1, feed pump 4, catalyst storage tank 2,
Metering pump 5, mixer 6, circulating pump 7, jet reactor 8, reactor tank 9, moisture trap 10, air blower 11, gas flowmeter
12 and fluid reservoir 13；
Adjusting tank 1, feed pump 4 are sequentially connected with mixer 6 by lye feed pipe, and chemical waste alkaline liquor can be passed through to mixing
In device 6, catalyst storage tank 2, metering pump 5 are sequentially connected with mixer 6 by catalyst charge pipe, mixed in order to which catalyst to be passed through
In clutch 6, mixer 6 is connect with the bottom of jet reactor 8, and mixed liquor is passed through in jet reactor 8 and is reacted, circulation
One end of pump 7 is connect with mixer 6, and the other end is connected to the interior circulation, it can be achieved that mixed liquor with the bottom of reactor tank 9, and jet stream is anti-
Answer device 8 to be located at the inside of reactor tank 9, air blower 11 is connect with gas flowmeter 12 by tracheae, and tracheae pass through reactor tank 9 with
The top of jet reactor 8 connects, and moisture trap 10 is located at the top of reactor tank 9, and passes through the top of escape pipe and reactor tank 9
Portion's connection, fluid reservoir 13 are connected to by outlet tube with the side wall of reactor tank 9.
Wherein, it adjusts and is equipped with the first valve 3-1 between tank 1 and feed pump 4, be equipped between circulating pump 7 and jet reactor 8
Second valve 3-2 is equipped with needle-valve 3-3 between jet reactor 8 and gas flowmeter 12；Outlet tube is located at 9 side wall of reactor tank and leans on
One end of nearly moisture trap 10, is discharged tank body after carrying out aqueous separation convenient for the lye after reacting completely；Reactor tank 9 can adopt
With steam heating or electric heating；Reactor tank 9 includes that single tank operation or multiple tank operation, multiple tank operate to series operation or simultaneously through transport
Row.
A kind of processing method of chemical waste alkaline liquor, comprising the following steps:
The chemical waste alkaline liquor adjusted in tank 1 is passed through mixer 6 by feed pump 4 and lye feed pipe according to design discharge
In；
The catalyst stored in catalyst storage tank 2 is passed through according to setting metering by metering pump 5 and catalyst charge pipe
In mixer 6, wherein according to chemical waste alkaline liquor liquid volume ratio, catalyst dosage is 0.5-5 ‰.
Chemical waste alkaline liquor and catalyst are mixed in mixer 6 in laggard incident flow reactor 8, while starting air blower
11, air-flow is passed through in jet reactor 8 by gas flowmeter 12 and tracheae；
Reactor tank 9 is heated, chemical waste alkaline liquor carries out oxidation reaction in reactor tank 9 and forms thiosulfuric acid and sodium sulphate, not
Enter circulating pump 7 from 9 bottom of reactor tank after the chemical waste alkaline liquor of fully reacting is degassed, is passed through in jet reactor 8 again, it is real
Circulation in existing material；
The chemical waste alkaline liquor of complete oxidation is gradually increasing in reactor tank 9, realizes gas-liquid separation, complete oxidation is sulphur
The chemical waste alkaline liquor of sour sodium is expelled in fluid reservoir 13 by outlet tube, and remaining gas drains into outside through moisture trap 10.
Embodiment 2
The embodiment of the invention provides a kind of processing unit of chemical waste alkaline liquor and method, specific processing includes following step
It is rapid:
Be processing water sample with certain chemical plant sulfur-containing waste lye, wherein the component of sulfur-containing waste lye according to mass percent,
7.5%Na2CO3, 0.8%NaOH, 1.8%Na2S and 89.6%H2O, sulfur-containing waste lye water sample pH value is 13, by sulfur-containing waste lye
According to design discharge 20m3/ h is passed through in mixer 6 by feed pump 4 and lye feed pipe；By what is stored in catalyst storage tank 2
Catalyst is passed through in mixer 6 according to mass percent 3 ‰, according to setting metering by metering pump 5 and catalyst charge pipe；It reaches
Circulation 7 is opened after to reactor tank liquid level 40%, adjusts power, and holding gas liquid ratio is 2:1, heats reactor tank 9 and keeps temperature 60
DEG C, reach 2/3 to liquid level, adjust circulation pump power, keep big flow operation, circulation in material is realized, at this point, vulcanized sodium is by oxygen
Chemical conversion thiosulfuric acid and sodium sulphate, liquid level gradually rise, and start overflow, at this point, the first valve 3-1 and the second valve 3-2 is closed,
Matter Transfer in reactor tank 9 is reacted, carries out the deep oxidation of sulfide, sulfate radical selectively reaches 85% or more, Huo Zhechang
The index that family requires opens the first valve 3-1 and the second valve 3-2 charging, with 7m3The speed of/h enters reactor tank, the company of realization
Continuous charging reaction, the lye overflow after reaction is to fluid reservoir 13, and remaining gas drains into outside through moisture trap 10, from liquid storage
Tank sampling analysis, wherein sulfide content 25mg/L, sodium thiosulfate 960mg/L.
Embodiment 3
The embodiment of the invention provides a kind of processing unit of chemical waste alkaline liquor and method, specific processing includes following step
It is rapid:
Be processing water sample with certain chemical plant sulfur-containing waste lye, wherein the component of sulfur-containing waste lye according to mass percent,
5%Na2CO3, 1%NaOH, 2.3%Na2S and 91.7%H2O, sulfur-containing waste lye water sample pH value are 13.3, and sulfur-containing waste lye is pressed
According to design discharge 20m3/ h is passed through in mixer 6 by feed pump 4 and lye feed pipe；It is urged what is stored in catalyst storage tank 2
Agent is passed through in mixer 6 according to mass percent 3.5 ‰, according to setting metering by metering pump 5 and catalyst charge pipe；It reaches
Circulation 7 to be opened after to liquid level 40%, adjusts power, holdings gas liquid ratio is 2.5:1, and heating reactor tank 9 is simultaneously kept for 65 DEG C of temperature, to
Liquid level reaches 2/3, adjusts circulation pump power, keeps big flow operation, circulation in material is realized, at this point, vulcanized sodium is oxidized to
Thiosulfuric acid and sodium sulphate, liquid level gradually rise, and start overflow, at this point, closing the first valve 3-1 and the second valve 3-2, make anti-
It answers in tank 9 Matter Transfer to react, carries out the deep oxidation of sulfide, reach sulfate radical and selectively reach 90% or more, open the
One valve 3-1 and the second valve 3-2 charging, with 8m3The speed of/h enters reactor tank, continuous feed reaction is realized, after reaction
Lye overflow to fluid reservoir 13, remaining gas drains into outside through moisture trap 10, from fluid reservoir sampling analysis, wherein vulcanizing
Object content 20mg/L, sodium thiosulfate 670mg/L.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of processing unit of chemical waste alkaline liquor, which is characterized in that including adjusting tank (1), feed pump (4), catalyst storage tank
(2), metering pump (5), mixer (6), circulating pump (7), jet reactor (8), reactor tank (9), moisture trap (10), air blast
Machine (11), gas flowmeter (12) and fluid reservoir (13)；
Adjust tank (1), feed pump (4) is sequentially connected with mixer (6) by lye feed pipe, catalyst storage tank (2), metering pump
(5) it is sequentially connected with mixer (6) by catalyst charge pipe, mixer (6) is connect with the bottom of jet reactor (8), is followed
One end of ring pump (7) is connect with mixer (6), and the other end is connected to the bottom of reactor tank (9), and jet reactor (8) is located at anti-
The inside of tank (9) is answered, air blower (11) is connect with gas flowmeter (12) by tracheae, and tracheae passes through reactor tank (9) and penetrates
The top of flow reactor (8) connects, and moisture trap (10) is located at the top of reactor tank (9), and passes through escape pipe and reactor tank
(9) top connection, fluid reservoir (13) are connected to by outlet tube with the side wall of reactor tank (9).
2. a kind of processing unit of chemical waste alkaline liquor according to claim 1, which is characterized in that the adjusting tank (1) with
It is equipped with the first valve (3-1) between feed pump (4), is equipped with the second valve (3-2) between circulating pump (7) and jet reactor (8),
Needle-valve (3-3) is equipped between jet reactor (8) and gas flowmeter (12).
3. a kind of processing unit of chemical waste alkaline liquor according to claim 1, which is characterized in that circulating pump (7) successively connects
Valve (3-2), jet reactor (8) and reactor tank (9) are connect, material self-circulation system is constituted.
4. a kind of processing unit of chemical waste alkaline liquor according to claim 1, which is characterized in that the reactor tank (9) can
Using steam heating or electric heating.
5. a kind of processing unit of chemical waste alkaline liquor according to claim 1, which is characterized in that reactor tank (9) packet
It includes single tank operation or multiple tank operation, the multiple tank operates to series operation or parallel running.
6. a kind of processing method of the processing unit of the chemical waste alkaline liquor using any claim 1-5, which is characterized in that including
Following steps:
The chemical waste alkaline liquor adjusted in tank (1) is passed through mixer by feed pump (4) and lye feed pipe according to setting flow
(6) in；
The catalyst stored in catalyst storage tank (2) is passed through according to setting metering by metering pump (5) and catalyst charge pipe
In mixer (6)；
In chemical waste alkaline liquor and the laggard incident flow reactor (8) of catalyst mixing in mixer (6), while starting air blower
(11), air-flow is passed through in jet reactor (8) by gas flowmeter (12) and tracheae, and gas is cut into small gas
Bubble；
It heats reactor tank (9), chemical waste alkaline liquor carries out oxidation reaction in reactor tank (9) and forms thiosulfuric acid and sodium sulphate, not
Enter circulating pump (7) from reactor tank (9) bottom after the chemical waste alkaline liquor of fully reacting is degassed, is passed through jet reactor again
(8) in, circulation in material is realized；
The chemical waste alkaline liquor of complete oxidation is gradually increasing in reactor tank (9), realizes gas-liquid separation, complete oxidation is sulfuric acid
The chemical waste alkaline liquor of sodium is expelled in fluid reservoir (13) by outlet tube, and remaining gas drains into outer through moisture trap (10)
Portion.
7. the processing method of chemical waste alkaline liquor according to claim 6, which is characterized in that the flow of chemical waste alkaline liquor is
0.1-20m3/h。
8. the processing method of chemical waste alkaline liquor according to claim 6, which is characterized in that according to chemical waste alkaline liquor liquid product
Than catalyst dosage is 0.5-5 ‰.
9. the processing method of chemical waste alkaline liquor according to claim 6, which is characterized in that the heating of the reactor tank (9)
Temperature is 30-70 DEG C, and the heating reaction time is 30-100h.
10. the processing method of chemical waste alkaline liquor according to claim 6, which is characterized in that the heating of the reactor tank (9)
Temperature is 50-65 DEG C, and the heating reaction time is 50-80h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019313.6A CN109264846A (en) | 2018-09-03 | 2018-09-03 | A kind of processing unit and method of chemical waste alkaline liquor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019313.6A CN109264846A (en) | 2018-09-03 | 2018-09-03 | A kind of processing unit and method of chemical waste alkaline liquor |
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| CN201811019313.6A Pending CN109264846A (en) | 2018-09-03 | 2018-09-03 | A kind of processing unit and method of chemical waste alkaline liquor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904465A (en) * | 2019-10-22 | 2020-03-24 | 新疆中泰创新技术研究院有限责任公司 | Device and method for treating byproduct mirabilite of viscose factory |
| CN116445183A (en) * | 2023-03-14 | 2023-07-18 | 中国石油化工股份有限公司 | Reaction device and method for jet mixing and reinforcing waste alkali liquid oxidation |
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| CN105561981A (en) * | 2015-12-16 | 2016-05-11 | 陕西省石油化工研究设计院 | High-efficient desulphurization catalyst for treating waste energy chemical alkaline liquor and preparation method thereof |
| CN205953633U (en) * | 2016-08-29 | 2017-02-15 | 陕西省石油化工研究设计院 | Be applicable to chemical industry waste lye catalytic oxidation desulfurization process device |
| CN107758934A (en) * | 2017-12-05 | 2018-03-06 | 陕西省石油化工研究设计院 | A kind of sulfur-bearing alkali lye desulfurization drop COD method and device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849881A (en) * | 2012-09-28 | 2013-01-02 | 陕西省石油化工研究设计院 | Electroplated wastewater comprehensive treatment method |
| CN105561981A (en) * | 2015-12-16 | 2016-05-11 | 陕西省石油化工研究设计院 | High-efficient desulphurization catalyst for treating waste energy chemical alkaline liquor and preparation method thereof |
| CN205953633U (en) * | 2016-08-29 | 2017-02-15 | 陕西省石油化工研究设计院 | Be applicable to chemical industry waste lye catalytic oxidation desulfurization process device |
| CN107758934A (en) * | 2017-12-05 | 2018-03-06 | 陕西省石油化工研究设计院 | A kind of sulfur-bearing alkali lye desulfurization drop COD method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110904465A (en) * | 2019-10-22 | 2020-03-24 | 新疆中泰创新技术研究院有限责任公司 | Device and method for treating byproduct mirabilite of viscose factory |
| CN116445183A (en) * | 2023-03-14 | 2023-07-18 | 中国石油化工股份有限公司 | Reaction device and method for jet mixing and reinforcing waste alkali liquid oxidation |
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