CN105236680B - A kind of process of coal gas Water warfare - Google Patents
A kind of process of coal gas Water warfare Download PDFInfo
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- CN105236680B CN105236680B CN201510670778.8A CN201510670778A CN105236680B CN 105236680 B CN105236680 B CN 105236680B CN 201510670778 A CN201510670778 A CN 201510670778A CN 105236680 B CN105236680 B CN 105236680B
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Abstract
The invention discloses a kind of process of coal gas Water warfare, including：1）Technique purification auxiliary agent is added in the recovery of circulatory system of gas liquor, then carries out cooling treatment；2）Antisludging agent is added in gas liquor after cooling treatment, then carries out air-liquid separation；3）Polyphosphazene polymer dirt agent is added in the liquid obtained after isolation, sediment, tar and middle oily separation is then carried out successively, obtains remaining liq；4）Add technique purification auxiliary agent again in remaining liq, be passed through after the fluid remained in remaining liq is separated in phenol ammonia recovery system；5）The liquid after the recycling of phenol ammonia recovery system is passed through again after being handled in biochemistry pool and adds purification of waste water auxiliary agent, then carry out flocculation treatment, purification is completed；The process can effectively prevent from blocking in gas liquor recovery of circulatory system, the problem of parking, greatly extend the service life and maintenance cycle of recovery of circulatory system, reduce the expense of maintenance, realize the zero-emission of gas liquor.
Description
Technical field
The present invention relates to coal chemical industry production field, specifically provides a kind of process of coal gas Water warfare.
Background technology
In the age developed rapidly now, the either Chinese or world, energy-consuming demand is growing day by day, and rich
Coal, few oil, deficency are the basic structure of China's energy again, therefore, develop the Chemical Industry using coal as raw material be China must
So selection.
Coal chemical industry refers to using coal as raw material, coal is converted into gas, liquid and solid fuel and chemistry through chemical process
The process of product, mainly including coal gasification, liquefaction, destructive distillation and tar production and carbide acetylene chemical industry etc..Can profit in coal chemical industry
In production technology, coking is to apply earliest technique, and is still the important component of chemical industry so far.Coal
Gasification occupies critical role in coal chemical industry, is the clean energy for producing various gaseous fuels, the synthesis of coal gasification production
Gas is the raw material of the multiple products such as synthetic liquid fuel, chemical products.
Caused gas liquor is needed to handle coal chemical industry in process of production, and substantial amounts of oil, dirt and suspension are contained in gas liquor
The materials such as thing, phenol, ammonia, oil-containing phenol water carry out vacuum flashing after the separation of coal gas water separation device, and separation is fuel-displaced, phenol water, dirt, portion
Divide oil emulsion, dissolved oil, dirt to efficiently separate and enter rear system phenol ammonia recovery unit, so may result in heat exchanger, tower
Disk blocks, and influences depriving hydrogen sulphide, deamination, extraction, is unfavorable for device high load capacity long-term operation, energy consumption is significantly increased, reduction is set
Standby production capacity, increase the clear tower cost of overhaul and use, increase producing cost input, and phenol ammonia recovery unit is not normally functioning,
Then cause biochemical treatment apparatus can not normal operation, waste water can not be up to standard, it is impossible to realizes wastewater zero discharge, this problem is always
It is the technical barrier for perplexing coal chemical industry enterprises.Wastewater zero discharge is realized, remaining waste water caused by production process need to be entered to advance
The processing of one step, but wastewater treatment difficulty is very big, is almost difficult to realize coal chemical industry wastewater zero emission truly, coalification
Work enterprise easily pollutes to environment.This is also the bottleneck problem for developing coal chemical industry, so waste water realizes that zero-emission is to restrict
The problem of most critical of Development of Coal Chemical Industry, and the environmental protection policy red line that current China is required coal chemical industry enterprises.
Therefore, the purified treatment of gas liquor how is realized, turns into people's urgent problem to be solved.
The content of the invention
In consideration of it, it is an object of the invention to provide a kind of process of coal gas Water warfare, at least to solve conventional coal
Air water purified treatment is difficult, recycle unit blocking often occurs, and maintenance cycle is short, it is costly the problems such as.
The invention provides a kind of process of coal gas Water warfare, it is characterised in that comprises the following steps：
1）Technique purification auxiliary agent is added in the recovery of circulatory system of gas liquor, then carries out cooling treatment；
2）Antisludging agent is added in gas liquor after cooling treatment, then carries out air-liquid separation；
3）Polyphosphazene polymer dirt agent is added in the liquid obtained after isolation, then carries out sediment, tar and middle oil successively
Separation, obtain remaining liq；
4）Add technique purification auxiliary agent again in remaining liq, after the fluid remained in remaining liq is separated, must locate
Liquid after reason, liquid after processing is passed through in phenol ammonia recovery system；
5）Liquid after the recycling of phenol ammonia recovery system is passed through to addition purification of waste water after handling in biochemistry pool again to help
Agent, then carries out flocculation treatment, and purification is completed.
It is preferred that the step 1）With step 4）In technique purification auxiliary agent consist of the following composition：By weight, 90
~ 99 parts of oleyl amine APEOs and 1 ~ 5 part of fatty amine.
Further, the step 1）With step 4）In technique purification auxiliary agent added using gradually incremental addition manner
Enter.
Further preferably, the gradually incremental addition manner includes：
S1, into the recovery of circulatory system add account for 1 ~ 3ppm of quantity of circulating water in the recovery of circulatory system technique it is net
Change auxiliary agent, kept for 10 ~ 15 days；
S2, into the recovery of circulatory system add account for 3 ~ 5ppm of quantity of circulating water in the recovery of circulatory system technique it is net
Change auxiliary agent, kept for 25 ~ 30 days；And
S3, the technique for accounting for 5 ~ 10ppm of quantity of circulating water in the recovery of circulatory system is added into the recovery of circulatory system
Auxiliary agent is purified, until the coal tar content described in the recovery of circulatory system in quantity of circulating water drops to original 20% ~ 30%.
Further preferably, the step 2）In antisludging agent be organic phosphonate.
Further preferably, the antisludging agent is added by the way of persistently adding, and the addition of the antisludging agent accounts for institute
State 3 ~ 5PPM of quantity of circulating water in recovery of circulatory system.
Further preferably, the step 3）In the agent of polyphosphazene polymer dirt be PDDA, its quality
Concentration is 26.2%, pH value 7.2.
Further preferably, the polyphosphazene polymer dirt agent is added by the way of persistently adding, the polyphosphazene polymer dirt agent
Addition accounts for 3 ~ 5PPM of quantity of circulating water in the recovery of circulatory system.
Further preferably, the step 5）In purification of waste water auxiliary agent consist of the following composition, by weight, activated carbon
35%th, aluminium polychloride 65% is further preferred, and the purification of waste water auxiliary agent is added by the way of persistently adding, and the waste water is net
100 ~ 500KG/KT gas liquors provided by the invention that the addition of change auxiliary agent accounts for quantity of circulating water in the recovery of circulatory system are net
The process of change, dosing is carried out respectively at five different chemical feeding points in gas liquor recovery of circulatory system, realizes gas liquor
It purification, on the one hand can reach the purpose of zero-emission, on the other hand can also solve the circulatory system and be stopped due to blocking, be transported
The problems such as row cycle is short, and maintenance cost is high.Wherein, adding technique purification auxiliary agent in gas liquor recovery of circulatory system first makes
Oil emulsion, dissolubility oil, sediment in gas liquor are separated with water, and the gas liquor after processing is cooled down with pending
Air-liquid separates, in order to which the line equipment for preventing the gas liquor in gas liquor recovery of circulatory system from flowing through occurs due to fouling
Obstructing problem, the antisludging agent added in gas liquor, solve the problems, such as fouling obstruction, then separated air-liquid, wherein,
Gas is raw gas, as a kind of energy collection；And liquid waits for the oil separation of next step, in order to improve the oil isolated
Product, polyphosphazene polymer dirt agent is added into liquid before separation, so that the flocculate in liquid is brought together, then passes through Jiao
Oil eliminator is separated the flocculate being brought together and tar respectively, then carries out the separation of tar again, in order to anti-
Only there are the oil and sediment of part residual in remaining gas liquor, add technique cleanser in remaining gas liquor again,
Oil therein and sediment are separated, remaining gas liquor is subjected to phenol ammonia recovery system, after reclaiming phenol therein, ammonia,
Wastewater purificant is added, carries out the further purification of gas liquor, eventually passes through the whole purification of completion gas liquor after flocculation treatment
Process.
The process of coal gas Water warfare provided by the invention, the gas, oil, phenol, ammonia etc. that will can be retained in gas liquor
Material separation and Extraction comes out, and realizes the purification of gas liquor, simultaneously, additionally it is possible to effectively prevents occurring in gas liquor recovery of circulatory system
Block, the problem of parking, greatly extend the service life and maintenance cycle of recovery of circulatory system, reduce the expense of maintenance
With realizing the zero-emission of gas liquor.
Brief description of the drawings
Fig. 1 is the flow chart of gas liquor technological process for purifying.
Embodiment
The present invention is further expalined with reference to specific embodiment, but be not intended to limit the invention
Protection domain.
Easily block, repair to solve gas liquor recovery of circulatory system present in conventional coal gas water treatment procedure
The problems such as cycle is short, and maintenance cost is high.Present embodiment provides a kind of process of coal gas Water warfare, the process is led to
Five different chemical feeding points of setting in gas liquor recovery of circulatory system are crossed, realize the purification of gas liquor, specific technological process
Referring to Fig. 1, the gas liquor in coal gas tank 1 is passed through in coal gas water reclamation system, technique purification auxiliary agent is passed through into high pressure first
Water jet pump 2 adds in coal gas water reclamation system, then gas liquor is cooled down by spray cooler 3, to facilitate follow-up raw gas
Extraction, in order to which the problem of fouling, blocking occurs in the pipeline for preventing gas liquor from flowing through, antisludging agent is added in gas liquor, so
After be passed through in waste heat boiler 4, gas liquor is subjected to air-liquid separation, gas therein is discharged by the upper end of waste heat boiler 4, and liquid
Body is discharged from the lower end of waste heat boiler 4, and the liquid of discharge first passes around expander 5, prevents thermal expansion from producing damage to pipeline,
Add polyphosphazene polymer dirt agent in a liquid again, the suspension in liquid to be brought together, then pass to tar separator 6
In, the sediment being brought together is discharged from bottom, then tar separation is come out, middle oil eliminator is then passed through again, will wherein
Middle oil separate, to prevent from also remaining part fluid or sediment in remaining liquid, in remaining liq again plus
Enter technique purification auxiliary agent, be pumped into by phenol water pump 7 in surge tank 8, the fluid of residual and sediment are removed, then by liquid via
Dilute phenol water pump 9, which is pumped into phenol ammonia recovery system 10, carries out phenol, recovery ammonia, wherein, it is respectively to connect successively in phenol, ammonia recovery system
Phenol ammonia recovery unit 11, flotation tank 12 and the homogeneous pond 13 connect, the liquid after the recycling of phenol ammonia recovery system are passed through life
Change after carrying out biochemical treatment in pond 14, be passed through the progress flocculation treatment of flocculation basin 15 after adding wastewater purificant, above-mentioned processing is complete
Cheng Hou, detects water quality, and each index meets the requirements.
Above-mentioned purification technique is summarized, is specially：
1）Technique purification auxiliary agent is added in the recovery of circulatory system of gas liquor, then carries out cooling treatment；
2）Antisludging agent is added in gas liquor after cooling treatment, then carries out air-liquid separation；
3）Polyphosphazene polymer dirt agent is added in the liquid obtained after isolation, then carries out sediment, tar and middle oil successively
Separation, obtain remaining liq；
4）Add technique purification auxiliary agent again in remaining liq, after the fluid remained in remaining liq is separated, must locate
Liquid after reason, liquid after processing is passed through in phenol ammonia recovery system；
5）Liquid after the recycling of phenol ammonia recovery system is passed through to addition purification of waste water after handling in biochemistry pool again to help
Agent, then carries out flocculation treatment, and purification is completed.
Wherein, step 1）With step 4）The addition of middle technique purification auxiliary agent, can be to gasification installation, coal gas water separation device
Realize and efficiently separate with the oil emulsion in gas liquor in phenol ammonia recovery unit, dissolubility oil, dirt slag and water, in residual gas water
Oil, dust content substantially reduce, in gas liquor oil content decline more than 80%, solve the equipment such as each tower tray, heat exchanger because of oily dirt
Resulted in blockage problem, improves tray efficiency and heat exchanger heat transfer effect, and a large amount of extractant, steam and circulations are saved for system
Water, the long-period stable operation of device is ensured.
Following data is a coal chemical industry enterprises gas liquor index situation using technique purification auxiliary agent：
The addition of auxiliary agent is purified by technique, makes the reduction of phenol water oil content, not only improves the water quality of gas liquor, and make
Obtaining the COD of gas liquor also significantly reduces, while the more efficient damage for improving extraction efficiency and extractant of reduction of oil content
Consumption；Oil content is huge to biological sludge toxicity in subsequent biochemical processing unit in gas liquor, in gas liquor pre-treatment of inlet waste water
Oil content is reduced, and biochemical treatment apparatus inlet wastewater oil content can be made effectively to reduce, the activity of biological bacteria is so improved, subtract
Light biochemical device processing load, enhances biochemical treatment waste water effect；Due to oil and slag good separating effect, middle oil, tar etc.
Water content in oil declines 50%, and Oil Recovery rate improves, and oil product yield increase, oily quality improves.Auxiliary agent is purified using the technique
Coal chemical industry enterprises can increase by 50 ~ 80% oil products, bring considerable economic benefit for enterprise；If adopted in the device of operation
Oil removing is carried out with technique purification auxiliary agent, and the dregs of fat, the deposit at each position also may be used in the system such as each tank body of runtime, pipeline
Effectively cleared up, make plant running more stable；Technique purification auxiliary agent oil removing scheme with the safety in production for being advantageous to device,
Reduce the purging system frequency, while greatly reduce the maintenance frequency of the equipment such as heat exchanger, tower, pump.Improve equipment processing
Ability, the equipment cycle of operation and service life are extended, because of maintenance and will not safeguarded and the underproduction or parking, and then also increase
Business Economic Benefit；Coal gas oil-containing dust-laden can be greatly lowered, cleaning of coal gas, prevent shift unit catalyst
Pollution, alleviate the produce load of follow-up gas cleaning system.
Many problems, particularly gasification installation, coal gas water separation device occur among the operation of coal chemical industry enterprises device
With phenol ammonia recovery unit after a period of time is run, scale problems occur in the line equipment of these device water runnings, occur
After these problems, device must not cause potential safety hazard and economic loss without parking process to enterprise, for this problem,
The process of above-mentioned coal gas Water warfare is taken in step 2）It is middle that antisludging agent is added into gas liquor, it can prevent gasification from filling
Put, the line equipment fouling of coal gas water separation device and phenol ammonia recovery unit, equipment installation is in normal condition, thus protect
Demonstrate,proved device high load capacity, long-term operation, these devices would not cause to run because of equipment installation scale problems it is abnormal even
The generation of parking accident.
After suspension in gas liquor, coal dust, ash is separated with oily and water, can quicker, significantly more efficient removing,
This purification technique is in step 3）Polyphosphazene polymer dirt agent is added into gas liquor so that suspension content declines 90% in gas liquor
More than, gas liquor quality is further improved, and has ensured effective operation of the centrifuge apparatus of solid-liquor separation.
Gas liquor after the processing of above-mentioned 4 step stills need to use biochemical treatment, is difficult otherwise up to standard, this purification technique exists
Step 5）In add purification of waste water auxiliary agent, make the water quality after processing really to accomplish to meet Treated sewage reusing processing requirement,
Realize the zero-emission of coal chemical industrial waste water truly.
The process for the coal gas Water warfare that the present embodiment provides, place with strong points to each section of coal gas aqueous nature, composition
It is closely linked to manage step, each section of gas liquor is all effectively controlled and is handled, and make each section of coal gas water treatment facilities all
In most efficient running status, coal gas water treatment procedure is so just set to have obtained most reliable, maximally effective guarantee.And we
Case does not increase apparatus investment cost, and easy and effective is this programme maximum feature, can be brought using this scheme to enterprise huge
Big environmental benefit and economic benefit.
Wherein, step 1）With step 4）As long as technique purification auxiliary agent in can realize oil emulsion in gas liquor, dissolubility
Oil, sediment and water are layered, and are preferably consisted of the following composition：By weight, 90 ~ 99 parts of oleyl amine APEOs and
1 ~ 5 part of fatty amine.
And step 1）With step 4）In technique purification auxiliary agent added using gradually incremental addition manner, be specially：
S1, into the recovery of circulatory system add account for 1 ~ 3ppm of quantity of circulating water in the recovery of circulatory system technique it is net
Change auxiliary agent, kept for 10 ~ 15 days；
S2, into the recovery of circulatory system add account for 3 ~ 5ppm of quantity of circulating water in the recovery of circulatory system technique it is net
Change auxiliary agent, kept for 25 ~ 30 days；And
S3, the technique for accounting for 5 ~ 10ppm of quantity of circulating water in the recovery of circulatory system is added into the recovery of circulatory system
Auxiliary agent is purified, until the coal tar content described in the recovery of circulatory system in quantity of circulating water drops to original 20% ~ 30%.
Wherein, step 2）In antisludging agent can be with purchased in market, preferably organic phosphonate, be most preferably：HEDP (hydroxyl Asia second
Base di 2 ethylhexyl phosphonic acid）, the antisludging agent can normally play its effect at 300 degrees Celsius, and it can prevent gasification installation, gas liquor separation
The line equipment fouling of device and phenol ammonia recovery unit, its mechanism of action are：Exist in gas liquor and Heisui River system substantial amounts of
The deposit that the metal ions such as calcium are formed, gas liquor antisludging agent can be by destroying the growth of crystal（Threshold effect）To prevent water
The generation of middle hardness ions foulant, in this way the necessary factor of scale deposition eliminate the need for.Antisludging agent is to solid mineral
Material has very strong dispersibility, and therefore, soluble solid can be by transition form, so as to the generation deposit in control system
Fouling, dirt can not be formed, and equipment installation is in normal condition, so ensure that device high load capacity, long-term operation, these dresses
Putting would not cause to run abnormal or even parking accident generation because of equipment installation scale problems.
More preferably, the antisludging agent is added by the way of persistently adding, and the addition of the antisludging agent account for it is described
3 ~ 5PPM of quantity of circulating water in recovery of circulatory system；Step 3）In the agent of polyphosphazene polymer dirt can be with purchased in market, preferably described step 3）
In the agent of polyphosphazene polymer dirt be PDDA, its mass concentration is 26.2%, pH value 7.2；It is more excellent
Choosing, the polyphosphazene polymer dirt agent are added by the way of persistently adding, and the addition of the polyphosphazene polymer dirt agent accounts for the recovery
3 ~ 5PPM of quantity of circulating water in the circulatory system.
Step 5）In purification of waste water auxiliary agent it is commercially available, preferably consist of the following composition, it is by weight, activated carbon 35%, poly-
Close aluminium chloride 65%；The purification of waste water auxiliary agent primarily directed to gas liquor in current coal chemical industry commonly use supplemented by Polyferric Sulfate or poly-aluminium
The biochemical processing method of two sections of a/o methods is carried out with organic flocculant, the decolouring of appearance and water treatment efficiency are all not satisfactory, if with
Organic decolorising agent, can be with although decolourizing, but the water COD after handling but can these elevated problems, and the purification of waste water auxiliary agent enters
Condensed ring type organic in row decolouring (decolouring Shuai≤87%), removal COD≤80%, removal BOD, removal fluoride f- and waste water etc.
Aspect has the incomparable advantage and effect of other any products, and the water quality after processing just can really accomplish to meet reclaimed water
Treatment for Reuse requirement, realizes the zero-emission of coal chemical industrial waste water truly.
More preferably, the purification of waste water auxiliary agent is added by the way of persistently adding, the purification of waste water auxiliary agent adds
Enter 100 ~ 500KG/KT that amount accounts for quantity of circulating water in the recovery of circulatory system.
Above-mentioned each embodiment is write according to progressive form, mainly emphasizes the difference of each embodiment
Place, its similar portion can be with cross-reference.
Embodiment 1
Purified treatment is carried out to the coal gas water reclamation system of certain company according to the method described above, the concrete outcome after purification is such as
Under：
First, the heat exchanger cleaning frequency
On October 19th, 2014 phenol retracting device resume operation after, because of each main heat exchanger（Reboiler）Still block up
Phenomenon is filled in, system frequent switching heat exchanger, with alkali lye foam washing, system loading is difficult to improve, and because a variety of causes system is repeatedly stopped
Car（It see the table below）.Dosing was tried out coal gas water system since November 30, through debugging after a while（And change pump）, dosing
System is progressively stable, while using during 9 to 20 December system shutdown, tissue professional is to 62401,62402,
62405 have carried out core pulling/opening head cleaning.As dosing is tried out, each heat exchanger device cycle of operation is progressively lengthened, and load is carried
Height, 115m has been up to it3/h（Enter tower amount）, fully met the production requirement of gasification installation and full Corporation system.
December 15 is front and rear using parking machine meeting, and after having carried out core pulling cleaning to each main heat exchanger of phenol recovery, heat exchanger is thrown
Enter operation, phenol recovery system operating load has reached the highest level since founding the factory, and the heat exchanger operation cleaning frequency rises appreciably.
From 20 days December in 2014, the cleaning frequency of heat exchanger progressively lengthened, and finally more than 30 days, had by the end of at present
The record of more than 50 days.
There are 5 days, 16 days, 29 days records not etc. dosing the first two months, the heat exchanger cycle of operation, and analysis reason is due to whole
The coal gas water circulation and runtime that individual gasification, gas liquor separation, phenol recovery are related to, have conventional long term accumulation to get off（Setting
In standby and pipeline）Grease, medicament remove these deposition greases need certain time, occurring once at the beginning of test run phenol recovery change
Hot device concentrates the phenomenon blocked（Because a large amount of greases are gone out the result peeled off in system）, but Round trip time relatively also carries in the past
It is high（Before medicament is on probation, Round trip time about 7 days or so）, by the end of April 12, the heat exchanger cycle of operation put into operation exceeded
30 days.
2nd, middle oil and tar yield analysis
After each chemical feeding points dosing, in production run operating process, hence it is evident that oil yield increased on year-on-year basis in discovery, by pair
Gasify the output statistics of branch caused tar, dust-laden tar, middle oily three kinds of byproducts over the years, obtain a result such as following table：
The output statistics of tar, dust-laden tar, middle oily three kinds of byproducts
Yield is various oily yield caused by one ton of feed coal of mean consumption
As can be seen from the above table, oil yield has a larger increase than in the past in coal gas water separation device in new purification method,
Tar simultaneously（Including dust-laden tar）Decline.Three kinds of oily gross production rates increase on a small quantity but amplification is little, are almost roughly equal to maintain an equal level,
This theoretically can also explain logical：All oils is that the addition of medicament being capable of maximum journey caused by gasification
Oil is from the separating effect in tar or water in degree increase, and substantive can not possibly additionally produce oils.But due to middle oily value
（Price）It is higher than tar, so that medicament is tried out as a result, it is possible to make company produce benefit more middle oily and then that generation is bigger.
Calculated by January 1st, 2015 to during March 31：
Compared with 2014
Middle oily yield adds 14.57-8.14=6.43 kg/t
One month increase yield 6.43 × 218943/3=469.2 t
Three months increase yield 6.43 × 218943 /=1407.8 t
The t of yield 1407.8 × 10/3=4692 can be increased within 1 year（Tire out operation per year to count for 10 months）
Tar（Including dust-laden tar）Yield reduces
27.69-23.72=3.97 kg/t
Lower the t of yield 3.97 × 218943/3=289.7 within one month
The t of yield 289.7 × 10=2897 can be lowered within 1 year（Add up operation per year to count for 10 months）
Comprehensive benefit value added：
Oil, tar price see the table below in January, 2015~3 month（Dust-laden tar is slightly disregarded）
Then benefit can be increased within one month
469.2 × 1937-289.7 × 1375=908840-398337=51.0503 ten thousand yuan
Benefit can be increased within 1 year
510.503 ten thousand yuan（Add up operation per year to count for 10 months）.
Embodiment 2
Purification method provided by the invention is equally used, the coal gas water reclamation system of certain factory is purified, specifically
Purification result, it see the table below：
Contrast on effect table before and after purification
Claims (6)
1. a kind of process of coal gas Water warfare, it is characterised in that comprise the following steps：
1）Technique purification auxiliary agent is added in the recovery of circulatory system of gas liquor, then carries out cooling treatment；
2）Antisludging agent is added in gas liquor after cooling treatment, then carries out air-liquid separation；
3）Polyphosphazene polymer dirt agent is added in the liquid obtained after isolation, then carries out sediment, tar and middle oily point successively
From obtaining remaining liq；
4）Add technique purification auxiliary agent again in remaining liq, phenol ammonia is passed through after the fluid remained in remaining liq is separated and is returned
In receipts system；
5）The liquid after the recycling of phenol ammonia recovery system is passed through again after being handled in biochemistry pool and adds purification of waste water auxiliary agent, so
After carry out flocculation treatment, purification is completed；
The step 1）With step 4）In technique purification auxiliary agent consist of the following composition：By weight, 90 ~ 99 parts of oleyl amines
APEO and 1 ~ 5 part of fatty amine；
The step 2）In antisludging agent be organic phosphonate；
The step 3）In the agent of polyphosphazene polymer dirt be PDDA, its mass concentration is 26.2%, pH
It is worth for 7.2；
The step 5）In purification of waste water auxiliary agent consist of the following composition, by weight, activated carbon 35%, aluminium polychloride
65%。
2. according to the process of coal gas Water warfare described in claim 1, it is characterised in that：The step 1）With step 4）In
Technique purification auxiliary agent is added using gradually incremental addition manner.
3. according to the process of coal gas Water warfare described in claim 2, it is characterised in that：The gradually incremental addition manner
Including：
S1, into the recovery of circulatory system add account for 1 ~ 3ppm of quantity of circulating water in the recovery of circulatory system technique purification help
Agent, kept for 10 ~ 15 days；
S2, into the recovery of circulatory system add account for 3 ~ 5ppm of quantity of circulating water in the recovery of circulatory system technique purification help
Agent, kept for 25 ~ 30 days；And
S3, the technique purification for accounting for 5 ~ 10ppm of quantity of circulating water in the recovery of circulatory system is added into the recovery of circulatory system
Auxiliary agent, until the coal tar content described in the recovery of circulatory system in quantity of circulating water drops to original 20% ~ 30%.
4. according to the process of coal gas Water warfare described in claim 1, it is characterised in that：The antisludging agent is using lasting addition
Mode add, and the addition of the antisludging agent accounts for 3 ~ 5PPM of quantity of circulating water in the recovery of circulatory system.
5. according to the process of coal gas Water warfare described in claim 1, it is characterised in that：The polyphosphazene polymer dirt agent is used and held
The mode of continuous addition adds, the addition of the polyphosphazene polymer dirt agent account for quantity of circulating water in the recovery of circulatory system 3 ~
5PPM。
6. according to the process of coal gas Water warfare described in claim 1, it is characterised in that；The purification of waste water auxiliary agent is used and held
The mode of continuous addition adds, the addition of the purification of waste water auxiliary agent account for quantity of circulating water in the recovery of circulatory system 100 ~
500KG/KT。
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| CN106630090B (en) * | 2017-03-21 | 2019-11-22 | 张征北 | A kind of purification method for coal chemical industrial waste water |
| CN108101262B (en) * | 2017-12-22 | 2021-06-01 | 张征北 | Gas water purification method |
| CN108911345A (en) * | 2018-09-17 | 2018-11-30 | 陕西黑猫焦化股份有限公司 | The cleaning treatment system of gas liquor after a kind of Coal Gasification |
| CN111362378A (en) * | 2018-12-26 | 2020-07-03 | 苏州永峰联环保科技有限公司 | Treatment method and treatment device for gas water of gas furnace |
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| CN103043847A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Floatation-biochemical treatment method and apparatus of ultra-thick oil sewage |
| CN103801114A (en) * | 2014-02-19 | 2014-05-21 | 张征北 | Purification assistant for coal chemical industry production and application thereof in coal chemical industry production |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312599B1 (en) * | 2000-06-01 | 2001-11-06 | John H. Reid | Method of using wastewater flow equalization basins for multiple biological treatments |
| CN103043847A (en) * | 2011-10-17 | 2013-04-17 | 中国石油天然气股份有限公司 | Floatation-biochemical treatment method and apparatus of ultra-thick oil sewage |
| CN103801114A (en) * | 2014-02-19 | 2014-05-21 | 张征北 | Purification assistant for coal chemical industry production and application thereof in coal chemical industry production |
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