CN106731242A - A kind of cleaning method of chemical engineering sludge treatment canvas press cloth - Google Patents

A kind of cleaning method of chemical engineering sludge treatment canvas press cloth Download PDF

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Publication number
CN106731242A
CN106731242A CN201611166515.4A CN201611166515A CN106731242A CN 106731242 A CN106731242 A CN 106731242A CN 201611166515 A CN201611166515 A CN 201611166515A CN 106731242 A CN106731242 A CN 106731242A
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parts
powder
water
cleaning
filter cloth
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CN201611166515.4A
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彭庆生
呼雪萍
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Anhui Su Qi Chemical Co Ltd
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Anhui Su Qi Chemical Co Ltd
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Priority to CN201611166515.4A priority Critical patent/CN106731242A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3707—Polyethers, e.g. polyalkyleneoxides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3788—Graft polymers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/10—Salts
    • C11D7/12—Carbonates bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/10—Salts
    • C11D7/14—Silicates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/265—Carboxylic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/268—Carbohydrates or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3245—Aminoacids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/40—Products in which the composition is not well defined
    • C11D7/44—Vegetable products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Detergent Compositions (AREA)
  • Filtration Of Liquid (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a kind of cleaning method of chemical engineering sludge treatment canvas press cloth, it is related to chemical engineering sewage processing equipment technical field, comprises the following steps：(1) once wash；(2) cleaning agent cleaning；(3) secondary washing；(4) dry.The cleaning performance of cleaning method of the present invention is good, the sludge being blocked on filter cloth mesh can be effectively removed, clearance rate reaches more than 98%, to avoid corroding filter cloth and influence sludge press filtration effect because sludge is blocked for a long time, extend the service life of filter cloth, reduce the replacement cost of filter cloth.

Description

A kind of cleaning method of chemical engineering sludge treatment canvas press cloth
Technical field：
The present invention relates to chemical engineering sewage processing equipment technical field, and in particular to press filtration machine filter is used in a kind of chemical engineering sludge treatment The cleaning method of cloth.
Background technology：
Filter press is the visual plant of chemical engineering sludge treatment, is used to increase the solid content in sludge.And filter cloth belongs to press filtration Machine work important component, after the sludge solids in filter press reach it is a certain amount of after need to clean filter cloth.And due to Contain chemical composition in chemical engineering sludge, filter cloth is easily corroded after filter cloth is attached to for a long time, shorten the service life of filter cloth, thus it is right Filter cloth will as much as possible wash the sludge being attached on filter cloth when cleaning.Conventional filter cloth cleaning method is rinsed using clear water, Not only water consumption is big, and cleaning performance is poor, it is difficult to the sludge being blocked in filter cloth mesh is effectively removed, so as to reduce filter press Press filtration effect.
The content of the invention：
The technical problems to be solved by the invention are that a kind of easy to operate, cleaning performance of offer is good and extension filter cloth is used The cleaning method of the chemical engineering sludge treatment canvas press cloth in life-span.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of cleaning method of chemical engineering sludge treatment canvas press cloth, comprises the following steps：
(1) once wash：Canvas press cloth is immersed in 50-55 DEG C of water, 30-60min is stood, then with 50-55 DEG C of water Rinse 10-15min；
(2) cleaning agent cleaning：Filter cloth after once washing is immersed in 55-60 DEG C of cleaning agent, 15-30min is stood, Then 5-10min is rinsed with 55-60 DEG C of cleaning agent；
(3) secondary washing：Filter cloth after cleaned dose is cleaned is immersed in 40-45 DEG C of water, stands 15-30min, then 5-10min is rinsed with 40-45 DEG C of water；
(4) dry：With 45-50 DEG C of hot-air seasoning, that is, filter cloth cleaning is completed by through the filter cloth after secondary washing；
The cleaning agent is mixed by the raw material of following parts by weight：Polished rice powder 10-15 parts, stone flour 5-10 parts, poly- second Glycol 40002-3 parts, microcrystalline cellulose 2-3 parts, carbomer 2-3 parts, molecular screen primary powder 1-2 parts, 1-2 parts of tea seed powder, little Su Beat powder 0.5-1 parts, potassium citrate 0.5-1 parts, Sodium Glycinate 0.2-0.3 parts, water 100-150 parts.
The stone flour is made up of the raw material of following parts by weight：Sepiolite powder 10-15 parts, zeolite powder 10-15 parts, vermiculite power 5-8 parts, asbestos wool 3-5 parts, polyethylene glycol oxide 3-5 parts, HPMA 2-3 parts, polyvinyl alcohol resin 1-2 parts, N- hydroxyls Methacrylamide 0.5-1 parts, 0.5-1 parts of laruyl alcohol sulfosuccinate disodium, water 80-100 parts, its preparation method is：Will Sepiolite powder, zeolite powder, vermiculite power and asbestos wool are warming up to 110-115 DEG C of insulation mixing with the programming rate of 5 DEG C/min 15min, adds polyethylene glycol oxide, HPMA and N hydroxymethyl acrylamide, continues to be incubated at 110-115 DEG C Mixing 15min, is then cooled to 45-50 DEG C of insulation mixing 10min, and add polyvinyl alcohol tree with the cooling rate of 5 DEG C/min Fat, laruyl alcohol sulfosuccinate disodium and water, then reflux state insulation mixing is warming up to the programming rate of 5 DEG C/min 15min, gained mixture naturally cools to room temperature, finally sends into freeze drier, dries gained solid abrasive into powder.
Above-mentioned made stone flour has excellent absorption and flocculation concurrently, so as to the dirt blocked in efficient absorption filter cloth mesh Mud.
Using preceding by modification, its processing method is the molecular screen primary powder：To in molecular screen primary powder add sun from Sub- polyacrylamide, PDDA and maleic anhydride grafting compatilizer, using at microwave after being sufficiently mixed Reason device microwave treatment 5min, and 30min is stood in 35-40 DEG C of environment, continue microwave treatment 5min, add PVPP And pre-gelatinized starch, continue microwave treatment 5min after being well mixed, then by gained mixture 0-5 DEG C of water of addition, dispersion is equal 15min is stood after even, reflux state insulation mixing 10min, finally feeding spray are then warming up to the programming rate of 10 DEG C/min In mist drying machine, gained particulate abrasive into powder is dried.
The molecular screen primary powder, PAMC, PDDA, maleic anhydride graft phase The quality amount ratio for holding agent, PVPP, pre-gelatinized starch and water is 15-20:1-2:0.5-1:0.1-0.2:0.5-1: 0.5-1:40-60。
The microwave frequency of the microwave treater is 2450MHz, power is 700W.
Molecular screen primary powder is realized in equal consumption by that its adsorption capacity can be improved into 20-25% after above-mentioned modification The effect of lower effectively absorption filter cloth sludge.
The beneficial effects of the invention are as follows：Cleaning method of the present invention is exclusively used in the clear of chemical engineering sludge treatment canvas press cloth Wash, with the easy to operate and amount of conserving water distinguishing feature, and cleaning performance is good, can effectively remove and be blocked in filter cloth mesh On sludge, clearance rate reaches more than 98%, to avoid corroding filter cloth and influence sludge press filtration effect because sludge is blocked for a long time, Extend the service life of filter cloth, reduce the replacement cost of filter cloth.
Specific embodiment：
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
(1) once wash：Canvas press cloth is immersed in 50-55 DEG C of water, 30min is stood, then rinsed with 50-55 DEG C of water 10min；
(2) cleaning agent cleaning：Filter cloth after once washing is immersed in 55-60 DEG C of cleaning agent, 15min is stood, so Afterwards 5min is rinsed with 55-60 DEG C of cleaning agent；
(3) secondary washing：Filter cloth after cleaned dose is cleaned is immersed in 40-45 DEG C of water, stands 30min, Ran Houyong 40-45 DEG C of water rinses 10min；
(4) dry：With 45-50 DEG C of hot-air seasoning, that is, filter cloth cleaning is completed by through the filter cloth after secondary washing；
The preparation of cleaning agent：By 15 parts of polished rice powders, 5 parts of stone flours, 2 parts of Macrogol 4000s, 2 parts of microcrystalline celluloses, 2 parts of cards Ripple resin, 1 part of molecular screen primary powder, 1 part of tea seed powder, 0.5 part of saleratus power, 0.5 part of potassium citrate, 0.2 part of Sodium Glycinate and 150 Part water is uniformly mixed.
The preparation of stone flour：By 15 parts of sepiolite powders, 10 parts of zeolite powders, 5 parts of vermiculite powers and 5 parts of asbestos wools with 5 DEG C/min's Programming rate be warming up to 110-115 DEG C insulation mixing 15min, add 3 parts of polyethylene glycol oxides, 3 parts of HPMAs and 0.5 part of N hydroxymethyl acrylamide, continues to be incubated mixing 15min at 110-115 DEG C, then with the cooling rate of 5 DEG C/min Be cooled to 45-50 DEG C insulation mixing 10min, and add 1 part of polyvinyl alcohol resin, 1 part of laruyl alcohol sulfosuccinate disodium and 80 parts of water, then reflux state insulation mixing 15min is warming up to the programming rate of 5 DEG C/min, gained mixture is naturally cooled to Room temperature, finally sends into freeze drier, dries gained solid abrasive into powder.
Molecular screen primary powder it is modified：To 1 part of PAMC, 1 part of poly- diformazan of addition in 20 parts of molecular screen primary powders Base diallyl ammonium chloride and 0.2 part of maleic anhydride grafting compatilizer, utilize microwave frequency 450MHz, power after being sufficiently mixed The microwave treater microwave treatment 5min of 700W, and 30min is stood in 35-40 DEG C of environment, continue microwave treatment 5min, then add Enter 0.5 part of PVPP and 0.5 part of pre-gelatinized starch, microwave treatment 5min is continued after being well mixed, then mix gained Thing is added in 60 parts of 0-5 DEG C of water, and 15min is stood after being uniformly dispersed, and is then warming up to backflow shape with the programming rate of 10 DEG C/min State insulation mixing 10min, finally sends into spray dryer, dries gained particulate abrasive into powder.
Embodiment 2
(1) once wash：Canvas press cloth is immersed in 50-55 DEG C of water, 30min is stood, then rinsed with 50-55 DEG C of water 10min；
(2) cleaning agent cleaning：Filter cloth after once washing is immersed in 55-60 DEG C of cleaning agent, 15min is stood, so Afterwards 5min is rinsed with 55-60 DEG C of cleaning agent；
(3) secondary washing：Filter cloth after cleaned dose is cleaned is immersed in 40-45 DEG C of water, stands 30min, Ran Houyong 40-45 DEG C of water rinses 10min；
(4) dry：With 45-50 DEG C of hot-air seasoning, that is, filter cloth cleaning is completed by through the filter cloth after secondary washing；
The preparation of cleaning agent：By 15 parts of polished rice powders, 5 parts of stone flours, 3 parts of Macrogol 4000s, 2 parts of microcrystalline celluloses, 2 parts of cards Ripple resin, 2 parts of molecular screen primary powders, 1 part of tea seed powder, 1 part of saleratus power, 0.5 part of potassium citrate, 0.2 part of Sodium Glycinate and 150 parts Water is uniformly mixed.
The preparation of stone flour：By 15 parts of sepiolite powders, 10 parts of zeolite powders, 5 parts of vermiculite powers and 3 parts of asbestos wools with 5 DEG C/min's Programming rate be warming up to 110-115 DEG C insulation mixing 15min, add 5 parts of polyethylene glycol oxides, 2 parts of HPMAs and 0.5 part of N hydroxymethyl acrylamide, continues to be incubated mixing 15min at 110-115 DEG C, then with the cooling rate of 5 DEG C/min 45-50 DEG C of insulation mixing 10min is cooled to, and adds 1 part of polyvinyl alcohol resin, 0.5 part of laruyl alcohol sulfosuccinate disodium With 100 parts of water, then with the programming rate of 5 DEG C/min be warming up to reflux state insulation mixing 15min, gained mixture natural cooling To room temperature, finally send into freeze drier, dry gained solid abrasive into powder.
Molecular screen primary powder it is modified：To added in 20 parts of molecular screen primary powders 2 parts of PAMCs, 0.5 part poly- two Methyl diallyl ammonium chloride and 0.2 part of maleic anhydride grafting compatilizer, utilize microwave frequency 450MHz, power after being sufficiently mixed The microwave treater microwave treatment 5min of 700W, and 30min is stood in 35-40 DEG C of environment, continue microwave treatment 5min, then add Enter 1 part of PVPP and 0.5 part of pre-gelatinized starch, continue microwave treatment 5min after being well mixed, then by gained mixture Add in 60 parts of 0-5 DEG C of water, 15min is stood after being uniformly dispersed, reflux state is then warming up to the programming rate of 10 DEG C/min Insulation mixing 10min, finally sends into spray dryer, dries gained particulate abrasive into powder.
Embodiment 3
Treatment is carried out clearly with the canvas press cloth after batch chemical engineering sludge using the cleaning method of embodiment 1 and embodiment 2 Wash, and cleaning performance is measured, as a result as shown in table 1.
Clearance rate of the cleaning method of the present invention of table 1 to sludge on filter cloth
Project Embodiment 1 Embodiment 2
Clearance rate 98.6% 98.8%
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its Equivalent thereof.

Claims (5)

1. a kind of cleaning method of chemical engineering sludge treatment canvas press cloth, it is characterised in that comprise the following steps：
(1) once wash：Canvas press cloth is immersed in 50-55 DEG C of water, 30-60min is stood, then rinsed with 50-55 DEG C of water 10-15min；
(2) cleaning agent cleaning：Filter cloth after once washing is immersed in 55-60 DEG C of cleaning agent, 15-30min is stood, then 5-10min is rinsed with 55-60 DEG C of cleaning agent；
(3) secondary washing：Filter cloth after cleaned dose is cleaned is immersed in 40-45 DEG C of water, stands 15-30min, Ran Houyong 40-45 DEG C of water rinses 5-10min；
(4) dry：With 45-50 DEG C of hot-air seasoning, that is, filter cloth cleaning is completed by through the filter cloth after secondary washing；
The cleaning agent is mixed by the raw material of following parts by weight：Polished rice powder 10-15 parts, stone flour 5-10 parts, polyethylene glycol 40002-3 parts, microcrystalline cellulose 2-3 parts, carbomer 2-3 parts, molecular screen primary powder 1-2 parts, 1-2 parts of tea seed powder, saleratus power 0.5-1 parts, potassium citrate 0.5-1 parts, Sodium Glycinate 0.2-0.3 parts, water 100-150 parts.
2. the cleaning method of chemical engineering sludge treatment canvas press cloth according to claim 1, it is characterised in that the stone Powder is made up of the raw material of following parts by weight：Sepiolite powder 10-15 parts, zeolite powder 10-15 parts, vermiculite power 5-8 parts, asbestos wool 3- 5 parts, polyethylene glycol oxide 3-5 parts, HPMA 2-3 parts, polyvinyl alcohol resin 1-2 parts, N hydroxymethyl acrylamide 0.5-1 parts, 0.5-1 parts of laruyl alcohol sulfosuccinate disodium, water 80-100 parts, its preparation method is：By sepiolite powder, zeolite Powder, vermiculite power and asbestos wool are warming up to 110-115 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, add polyoxygenated Ethene, HPMA and N hydroxymethyl acrylamide, continue to be incubated mixing 15min at 110-115 DEG C, then with 5 DEG C/cooling rate of min is cooled to 45-50 DEG C of insulation mixing 10min, and adds polyvinyl alcohol resin, laruyl alcohol sulfosuccinic Acid esters disodium and water, then reflux state insulation mixing 15min, gained mixture nature are warming up to the programming rate of 5 DEG C/min Room temperature is cooled to, is finally sent into freeze drier, dry gained solid abrasive into powder.
3. the cleaning method of chemical engineering sludge treatment canvas press cloth according to claim 1, it is characterised in that：Described point Using preceding by modification, its processing method is the former powder of son sieve：To adding PAMC, poly- in molecular screen primary powder Dimethyl diallyl ammonium chloride and maleic anhydride grafting compatilizer, utilize microwave treater microwave treatment after being sufficiently mixed 5min, and 30min is stood in 35-40 DEG C of environment, continue microwave treatment 5min, add PVPP and pre-gelatinized is formed sediment Powder, microwave treatment 5min is continued after being well mixed, and then by gained mixture 0-5 DEG C of water of addition, is stood after being uniformly dispersed 15min, is then warming up to reflux state insulation mixing 10min with the programming rate of 10 DEG C/min, finally sends into spray dryer In, dry gained particulate abrasive into powder.
4. the cleaning method of chemical engineering sludge treatment canvas press cloth according to claim 3, it is characterised in that：Described point The former powder of son sieve, PAMC, PDDA, maleic anhydride grafting compatilizer, the poly- dimension of crosslinking The quality amount ratio of ketone, pre-gelatinized starch and water is 15-20:1-2:0.5-1:0.1-0.2:0.5-1:0.5-1:40-60.
5. the cleaning method of chemical engineering sludge treatment canvas press cloth according to claim 3, it is characterised in that：It is described micro- The microwave frequency of ripple processor is 2450MHz, power is 700W.
CN201611166515.4A 2016-12-16 2016-12-16 A kind of cleaning method of chemical engineering sludge treatment canvas press cloth Withdrawn CN106731242A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109395589A (en) * 2018-12-14 2019-03-01 江阴江化微电子材料股份有限公司 A kind of sulfuric acid filter core wetting technique
CN110193221A (en) * 2019-05-20 2019-09-03 中国石化长城能源化工（宁夏）有限公司 A method of cleaning polytetrahydrofuran device filter cloth for plate-frame type filter presses
CN111841151A (en) * 2020-08-25 2020-10-30 中国水利水电第八工程局有限公司 Method for cleaning filter cloth of plate-and-frame filter press for river and lake sludge solidification

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343168A (en) * 2011-10-10 2012-02-08 瓮福（集团）有限责任公司 Method for cleaning and descaling plate-and-frame type filter press
CN105695161A (en) * 2016-03-16 2016-06-22 安徽海德石油化工有限公司 Filling material cleaning agent for waste gas absorption tower of oil refinery
CN105969560A (en) * 2016-06-29 2016-09-28 巢湖鹏远金属焊管有限公司 Cleaning agent for maintaining draining steel pipe of kitchen sink

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343168A (en) * 2011-10-10 2012-02-08 瓮福（集团）有限责任公司 Method for cleaning and descaling plate-and-frame type filter press
CN105695161A (en) * 2016-03-16 2016-06-22 安徽海德石油化工有限公司 Filling material cleaning agent for waste gas absorption tower of oil refinery
CN105969560A (en) * 2016-06-29 2016-09-28 巢湖鹏远金属焊管有限公司 Cleaning agent for maintaining draining steel pipe of kitchen sink

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109395589A (en) * 2018-12-14 2019-03-01 江阴江化微电子材料股份有限公司 A kind of sulfuric acid filter core wetting technique
CN109395589B (en) * 2018-12-14 2021-03-02 江阴江化微电子材料股份有限公司 Sulfuric acid filter element wetting process
CN110193221A (en) * 2019-05-20 2019-09-03 中国石化长城能源化工（宁夏）有限公司 A method of cleaning polytetrahydrofuran device filter cloth for plate-frame type filter presses
CN110193221B (en) * 2019-05-20 2021-11-09 中国石化长城能源化工（宁夏）有限公司 Method for cleaning filter cloth of plate-and-frame filter press of polytetrahydrofuran device
CN111841151A (en) * 2020-08-25 2020-10-30 中国水利水电第八工程局有限公司 Method for cleaning filter cloth of plate-and-frame filter press for river and lake sludge solidification

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Application publication date: 20170531