CN106540911A - The cleaning method of normal butane method production maleic anhydride switching cooler used - Google Patents
The cleaning method of normal butane method production maleic anhydride switching cooler used Download PDFInfo
- Publication number
- CN106540911A CN106540911A CN201510601558.XA CN201510601558A CN106540911A CN 106540911 A CN106540911 A CN 106540911A CN 201510601558 A CN201510601558 A CN 201510601558A CN 106540911 A CN106540911 A CN 106540911A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- cooler
- maleic anhydride
- normal butane
- solvent
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- 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
-
- 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
- C11D7/06—Hydroxides
-
- 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
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/261—Alcohols; Phenols
-
- 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
-
- 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
- C11D7/50—Solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Detergent Compositions (AREA)
Abstract
The present invention relates to switch the cleaning method of cooler used by normal butane method production maleic anhydride, the method step is：（1）Cleaning agent and solvent are mixed and made into into cleaning solution；（2）Cleaning solution is heated；（3）Cleaning solution after heating is passed through in switching cooler, for cleaning the tar and impurity of switching cooler；（4）Tar, impurity and cleaning solution are carried out into sedimentation filtration, tar and impurity is reclaimed and is obtained new cleaning agent, repeat step（1）Extremely（4）Recycle cleaning agent；（5）Switch cooler with solvent washing, and detect whether the solution of discharge is up to standard, clean if up to standard and finish, the repeat step if not up to standard（1）Extremely（5）Until up to standard.The present invention greatly reduces cleaning frequency and the workload of cleaning without the need for the upper low head of dismounting switching cooler.Reusable edible cleaning agent of the present invention, reduces cleaning cost, reduces environmental pollution.
Description
Technical field
The present invention relates to the cleaning method for switching cooler used in maleic anhydride production technical field, more particularly to the production of normal butane method maleic anhydride.
Background technology
Maleic anhydride（MAH）It is a kind of conventional basic organic chemical industry raw material, is the second largest anhydride starting material for being only second to phthalic anhydride in the world, and product has quite extensive development and application prospect downstream.Maleic anhydride is widely used in a series of important organic chemicals such as synthetic resin, lube oil additive, medicine, food additives, BDO, gamma-butyrolacton, tetrahydrofuran, succinic acid, fumaric acid and fine chemicals.
At present, typically adopt n butane oxidation method to produce maleic anhydride, the method adopts vanadium phosphorus oxygen（VPO）Catalyst system.React under the conditions of temperature is for 400～450 DEG C, reaction contains maleic anhydride, acetic acid, acrylic acid, carbon monoxide and carbon dioxide in generating gas.Reacting gas is cooled down through two-stage cooler, and cooler is lowered the temperature using water.First order cooler is gas cooler, and outlet temperature is 270 DEG C, and second-stage cooler is switching cooler, and after gas cooling, temperature is 130 DEG C.The effect of switching cooler is to cool down the tail gas that maleic anhydride reactor reaction is produced, and the tar produced in cooling procedure and impurity can be attached to the tube side inwall of heat exchanger, affect heat transfer effect.When in actual production operation, heat exchanger occurs tar and impurity adhesion, the air flow control valve at switching cooler rear gradually can be held greatly, and the pressure-control valve in front of maleic anhydride reactor is gradually turned down, and so as to beds pressure reduction is reduced, affect technique productions.Therefore, switching cooler needs periodic cleaning, and normal production cleans one weekly, and the whole washing and cleaning operation cycle is 5 days.
Conventional cleaning methods high pressure washing water law, is removed the upper low head of switching cooler first, is then cleaned using high pressure water cleaning vehicle device.The cleaning equipment is diesel oil high-pressure sewer flushing vehicle, using desalted water as rinse water.The water that cleaning is discharged is expelled to the filtering trough for connecing flushing waste water by the drain valve of bottom, and the water after filtration is discharged into cesspool.Whole scavenging period is 3 days, easily produces some dead angles not flushed.In addition, after rinsing every time, upper low head need to be returned dress leak detection.Sealing off head needs 1 day, and dress end socket is needed 1 day, and dismounting leak detection workload is very big, and whole periodic needs the used time 5 days, needs cleaning 50 times every year, need to ask the cleaning troop cleaning of specialty, take time and effort.
Chinese patent CN201310129957.1 solves the problems, such as the heavy seeds of water in maleic anhydride production, acetic acid, the light impurity such as propylene and the non-tar of condensable, the patent needs to increase stripping tower of the individually designed tower reactor for taper, the blocking of follow-up equipment is only address only, does not have to solve the problems, such as the cleaning of switching cooler and blocking for cooling down maleic anhydride reacting gas.Patent WO2012JP75280 discloses a kind of cleansing composition, and its composition includes saturated aliphatic hydrocarbon, ionic surface active agent, water etc..The cleaning agent of the patent is mainly used in automobile, instrument, electric electrode clean, does not refer to for switching the cleaning of cooler.
In sum, the switching cooler how cleaned in maleic anhydride production becomes a technical barrier of industry.Therefore, switch the cleaning method of cooler in developing a kind of production for normal butane method maleic anhydride, it appears be of practical significance very much.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide switch the cleaning method of cooler in a kind of production of normal butane method maleic anhydride, with solve the cleaning of conventional high-tension water cleaning step is loaded down with trivial details, the difficult problem that cycle length, workload are big.
The present invention technical solution be：The cleaning method of normal butane method production maleic anhydride switching cooler used, comprises the following steps：
（1）Cleaning agent is mixed with solvent, cleaning solution is prepared into, it is 0.01～10% that cleaning agent used accounts for the concentration expressed in percentage by weight of the cleaning solution that cleaning solution allotment is obtained；
（2）The cleaning solution for obtaining is heated, the temperature after heating is 50～100 DEG C；
（3）Cleaning solution after heating is passed through in switching cooler, for cleaning the tar and impurity of switching cooler；
（4）Tar, impurity and cleaning solution are passed through into settlement filter after cleaning, tar and impurity are removed Jing the collection Jing after sedimentation filtration effect, and cleaning solution obtains new cleaning agent, repeat step Jing after sedimentation filtration effect（1）To step（4）, recycle cleaning agent；
（5）After multiple wash cycles are completed, switch cooler with solvent washing, the solution of the discharge Jing after solvent clean is collected by cleaning feeder, and the solution to discharging is sampled and detects object ion, clean if object ion detection is up to standard and finish；If object ion detects not up to standard, repeat step（1）To step（5）, until detection is up to standard to complete cleaning.
Preferably, the cleaning method of above-mentioned normal butane method production maleic anhydride switching cooler used, wherein：The cleaning agent includes basic component, salt component and solvent composition, and the basic component includes the alkali metal and metal ion that can be dissolved in water, and the salt component includes the alkali metal and metal ion that can be dissolved in water, and the solvent composition is desalted water；Or, with desalted water as cleaning agent.
Further, basic component institute accounting is 0.01～99.9wt%, and salt component institute accounting is 0.01～60wt%, and solvent composition institute accounting is 0.01～80wt%, and the basic component, salt component and solvent composition sum are 100 wt%；Wherein, the basic component is containing Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+、Pb2+Hydroxide, NH3, hydrazine or be dissolved in the organic base of water, the salt component is containing Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+、Pb2+Or NH4 +Salt.
More preferably, the cleaning method of above-mentioned normal butane method production maleic anhydride switching cooler used, wherein：Step（1）In, the solvent is desalted water, or the mixture of desalted water and methyl alcohol, or the mixture of desalted water and ethanol, and the cleaning agent is passed through in blending tank with solvent and mix, and the cleaning solution allocates concentration for 0.1～8%.
More preferably, the cleaning method of above-mentioned normal butane method production maleic anhydride switching cooler used, wherein：The step（2）In, cleaning solution is heated by heat exchanger, and the temperature after heating is 70～95 DEG C.
More preferably, the cleaning method of above-mentioned normal butane method production maleic anhydride switching cooler used, wherein：The step（1）To step（4）Using pump forced circulation.
It is highly preferred that the cleaning method of above-mentioned normal butane method production maleic anhydride switching cooler used, wherein：The step（5）In, detect that the summation of the concentration that requirement up to standard is each object ion is less than 5/1000000ths.
The prominent substantive distinguishing features of the present invention and significant progress are mainly reflected in：
1st, cleaning agent of the invention is can be recycled by the sedimentation filtration effect of settlement filter, is economized on resources, is reduced job costs；
2nd, compared with conventional art, the present invention greatly reduces cleaning frequency and the workload of cleaning without the need for the upper low head of dismounting switching cooler；
3rd, using the present invention, the recyclable recycling of cleaning fluid, reducing the impurity such as cleaning cost, tar can be processed with centralized collection, it is to avoid direct environment pollutes, with environmental benefit and social benefit.
Description of the drawings
Fig. 1 is the schematic flow sheet of cleaning method of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is more readily understood and grasps.
The present invention switches the cleaning method of cooler in proposing a kind of normal butane method maleic anhydride production, using cleaning agent include basic component, salt component and solvent composition, wherein, basic component institute accounting is 0.01～99.9wt%, salt component institute accounting is 0.01～60wt%, solvent composition institute accounting is 0.01～80wt%, and three's sum is 100wt%.
The basic component includes the alkali metal and metal ion that can be dissolved in water, such as contains Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+Or Pb2+Hydroxide, NH3, hydrazine or be dissolved in the organic base of water；The salt component includes the alkali metal and metal ion that can be dissolved in water, such as contains Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+、Pb2+Or NH4 +Salt, such as the hydrogen salt and/or trivalent anion of permanganate, acetate, tungstates, chlorate, hypochlorite, perchlorate, silicate, nitrate, nitrite, tartrate, chromate, fluosilicate, carbonate, meta-aluminate, Quadrafos, pyrosulfate, silver dichromate, aluminate, selenate, borate, formates, acetate, sulfate, thiosulfate, halate, halide, cyanide, sulphite and/or dianion one, one or more compound of dihydric salt；The solvent composition is desalted water.When cooler internal contamination is not very high, it is also possible to directly cleaned to switching cooler as cleaning agent with desalted water.
As shown in figure 1, in normal butane method maleic anhydride production of the present invention, switch the cleaning method of cooler, including following step：（1）The cleaning agent 1 and solvent 2 are passed through blending tank 3 to be mixed, cleaning solution is prepared into, cleaning solution allotment concentration is 0.01～10%, preferably 0.1～8%；The solvent is desalted water, as cleaning solvent 2 into desalted water after methyl alcohol or ethanol also can be added to allocate；（2）The cleaning solution for obtaining is heated by heat exchanger 4, the temperature after heating is 50～100 DEG C, preferably 70～95 DEG C；（3）To be passed through in switching cooler 5 through the cleaning solution that heat exchanger 4 is heated, for cleaning the tar and impurity of adhesion in switching cooler 5, described tar is the brown viscous thing of acetic acid, acrylic acid, maleic anhydride polymerization at high temperature；（4）Tar, impurity and cleaning solution are passed through into settlement filter 7 after cleaning, the tar and impurity recyclable recycling Jing after the effect of 7 sedimentation filtration of settlement filter, cleaning solution obtains new cleaning agent 1 Jing after the effect of 7 sedimentation filtration of settlement filter, is passed through in blending tank 3 again and repeat step the cleaning agent 1 for newly obtaining again afterwards（1）To step（4）, recycle cleaning agent 1；（5）After multiple wash cycles are completed, switching cooler 5 is rinsed with solvent 2, the solution of the discharge after cleaning is collected by cleaning feeder, and the solution to discharging is sampled detection object ion.Detection requirement up to standard is that the summation of the concentration of each object ion is less than 5/1000000ths, cleans and finish if object ion detection is up to standard；If object ion detects not up to standard, repeat the above steps（1）To step（5）, until detection is up to standard to complete cleaning.In whole process, switching cooler realizes online wash cycles by need not removing low head.And, being controlled and temperature control using flow in said process, the whole cyclic process of cleaning agent adopts pump forced circulation.
Embodiment 1
Cleaning agent 1 is mixed in blending tank 3 with solvent 2, and prepare the cleaning solution in concentration 2%, solvent enters switching cooler 5 Jing after heat exchanger 4 is heated to 90 DEG C, is recycled in being passed through again blending tank 3 after 7 sedimentation filtration of cleaning solution Jing settlement filters, and circular flow is 10t/h.Na in cleaning solution2CO3Accounting 5%, NH3Accounting 2%, ethanol accounting 6%, remaining is desalted water.Circulation primary 2 hours, circulates three times.Afterwards, switch cooler using solvent washing, sampled point detects that Na ion concentrations are less than 5ppm in solvent, show to switch the interior range estimation of cooler without bur, cleaning is finished.
Embodiment 2
Cleaning agent 1 is mixed in blending tank 3 with solvent 2, and prepare the cleaning solution in concentration 2%, solvent enters switching cooler 5 Jing after heat exchanger 4 is heated to 85 DEG C, is recycled in being passed through again blending tank 3 after 7 sedimentation filtration of cleaning solution Jing settlement filters, and circular flow is 10t/h.NaOH accountings 5% in cleaning solution, ethylenediamine accounting 1%, methyl alcohol accounting 4%, remaining is desalted water.Circulation primary 2 hours, circulates three times.Afterwards, switch cooler using solvent washing, sampled point detects that Na ion concentrations are less than 5ppm in solvent, show to switch the interior range estimation of cooler without bur, cleaning is finished.
Embodiment 3
Cleaning agent 1 is mixed in blending tank 3 with solvent 2, and prepare the cleaning solution in concentration 3%, solvent enters switching cooler 5 Jing after heat exchanger 4 is heated to 90 DEG C, is recycled in being passed through again blending tank 3 after 7 sedimentation filtration of cleaning solution Jing settlement filters, and circular flow is 10t/h.CH in cleaning solution3COONa accountings 3%, methylamine accounting 1.5%, methyl alcohol accounting 3%, remaining is desalted water.Circulation primary 2 hours, circulates three times.Afterwards, switch cooler using solvent washing, sampled point detects that Na ion concentrations are less than 5ppm in solvent, show to switch the interior range estimation of cooler without bur, cleaning is finished.
By above description as can be seen that switching the cleaning method of cooler in normal butane method maleic anhydride of the present invention production, its cleaning agent is can be recycled by the sedimentation filtration effect of settlement filter, is economized on resources, is reduced cost；Using the present invention, adhere to tar and impurity in switching cooler by settlement filter can centralized collection process, reduce the discharge of waste water, with environmental benefit and social benefit；Compared with conventional art, the present invention greatly reduces cleaning frequency and the workload of cleaning without the need for the upper low head of dismounting switching cooler.
Certainly; the above is only the preferred embodiment of the present invention; it should be understood that; for those skilled in the art; on the premise of without departing from the technology of the present invention principle; some improvement and modification can also be made, these improve and modification should also be considered as within protection scope of the present invention.
Claims (8)
1. the cleaning method of cooler is switched used by normal butane method production maleic anhydride, it is characterised in that：Comprise the following steps：
（1）Cleaning agent is mixed with solvent, cleaning solution is prepared into, it is 0.01～10% that cleaning agent used accounts for the concentration expressed in percentage by weight of the cleaning solution that cleaning solution allotment is obtained；
（2）The cleaning solution for obtaining is heated, the temperature after heating is 50～100 DEG C；
（3）Cleaning solution after heating is passed through in switching cooler, for cleaning the tar and impurity of switching cooler；
（4）Tar, impurity and cleaning solution are passed through into settlement filter after cleaning, tar and impurity are removed Jing the collection Jing after sedimentation filtration effect, and cleaning solution obtains new cleaning agent, repeat step Jing after sedimentation filtration effect（1）To step（4）, recycle cleaning agent；
（5）After multiple wash cycles are completed, switch cooler with solvent washing, the solution of the discharge Jing after solvent clean is collected by cleaning feeder, and the solution to discharging is sampled and detects object ion, clean if object ion detection is up to standard and finish；If object ion detects not up to standard, repeat step（1）To step（5）, until detection is up to standard to complete cleaning.
2. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 1, it is characterised in that：The cleaning agent includes basic component, salt component and solvent composition, and the basic component includes the alkali metal and metal ion that can be dissolved in water, and the salt component includes the alkali metal and metal ion that can be dissolved in water, and the solvent composition is desalted water；Or, with desalted water as cleaning agent.
3. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 2, it is characterised in that：Basic component institute accounting is 0.01～99.9wt%, and salt component institute accounting is 0.01～60wt%, and solvent composition institute accounting is 0.01～80wt%, and the basic component, salt component and solvent composition sum are 100 wt%.
4. the cleaning method of cooler is switched used by the normal butane method production maleic anhydride according to Claims 2 or 3, it is characterised in that：The basic component is containing Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+、Pb2+Hydroxide, NH3, hydrazine or be dissolved in the organic base of water；The salt component is containing Na+、K+、Ca2+、Mg2+、Al3+、Zn2+、Fe2+、Fe3+、Ba2+、Pb2+Or NH4 +Salt.
5. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 1, it is characterised in that：The step（1）In, the solvent is desalted water, or the mixture of desalted water and methyl alcohol, or the mixture of desalted water and ethanol；The cleaning agent is passed through in blending tank with solvent and is mixed, and the cleaning solution allotment concentration is 0.1～8%.
6. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 1, it is characterised in that：The step（2）In, cleaning solution is heated by heat exchanger, and the temperature after heating is 70～95 DEG C.
7. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 1, it is characterised in that：The step（1）To step（4）Using pump forced circulation.
8. the cleaning method of cooler is switched used by normal butane method production maleic anhydride according to claim 1, it is characterised in that：The step（5）In, detect that the summation of the concentration that requirement up to standard is each object ion is less than 5/1000000ths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601558.XA CN106540911B (en) | 2015-09-18 | 2015-09-18 | Normal butane method produces the cleaning method of maleic anhydride switching cooler used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601558.XA CN106540911B (en) | 2015-09-18 | 2015-09-18 | Normal butane method produces the cleaning method of maleic anhydride switching cooler used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106540911A true CN106540911A (en) | 2017-03-29 |
| CN106540911B CN106540911B (en) | 2019-06-14 |
Family
ID=58362406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510601558.XA Active CN106540911B (en) | 2015-09-18 | 2015-09-18 | Normal butane method produces the cleaning method of maleic anhydride switching cooler used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106540911B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130224A (en) * | 2017-12-20 | 2018-06-08 | 重庆洛昂机械有限公司 | A kind of cleaning method for oil cooler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001092456A1 (en) * | 2000-06-01 | 2001-12-06 | Asahi Kasei Kabushiki Kaisha | Cleaning agent, cleaning method and cleaning apparatus |
| CN1608708A (en) * | 2003-10-24 | 2005-04-27 | 北京金伟晖工程技术有限公司 | Water soluble solvent vegenerating system and method |
| CN201497421U (en) * | 2009-08-07 | 2010-06-02 | 自贡东方通用能源有限公司 | Cooler on-road cleaning device |
| CN102397855A (en) * | 2011-10-28 | 2012-04-04 | 中国重汽集团济南动力有限公司 | Regenerated engine oil cooler core cleaning device |
| CN103193739A (en) * | 2013-04-16 | 2013-07-10 | 北京秦唐工程有限公司 | Method for removing heavy and light impurities in maleic anhydride system |
| CN103721970A (en) * | 2013-12-19 | 2014-04-16 | 攀钢集团工程技术有限公司 | Cleaning device and method for cleaning cooler of desulfurization system |
| CN204051048U (en) * | 2014-09-19 | 2014-12-31 | 桐乡恒基生物股份有限公司 | Carry the alcohol distillation column cooling device of wiper mechanism |
-
2015
- 2015-09-18 CN CN201510601558.XA patent/CN106540911B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001092456A1 (en) * | 2000-06-01 | 2001-12-06 | Asahi Kasei Kabushiki Kaisha | Cleaning agent, cleaning method and cleaning apparatus |
| CN1608708A (en) * | 2003-10-24 | 2005-04-27 | 北京金伟晖工程技术有限公司 | Water soluble solvent vegenerating system and method |
| CN201497421U (en) * | 2009-08-07 | 2010-06-02 | 自贡东方通用能源有限公司 | Cooler on-road cleaning device |
| CN102397855A (en) * | 2011-10-28 | 2012-04-04 | 中国重汽集团济南动力有限公司 | Regenerated engine oil cooler core cleaning device |
| CN103193739A (en) * | 2013-04-16 | 2013-07-10 | 北京秦唐工程有限公司 | Method for removing heavy and light impurities in maleic anhydride system |
| CN103721970A (en) * | 2013-12-19 | 2014-04-16 | 攀钢集团工程技术有限公司 | Cleaning device and method for cleaning cooler of desulfurization system |
| CN204051048U (en) * | 2014-09-19 | 2014-12-31 | 桐乡恒基生物股份有限公司 | Carry the alcohol distillation column cooling device of wiper mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130224A (en) * | 2017-12-20 | 2018-06-08 | 重庆洛昂机械有限公司 | A kind of cleaning method for oil cooler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106540911B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101407366B (en) | Method for rapidly recycling chrome from chroming waste liquor by alkali precipitation | |
| CN109181759A (en) | A kind of method of chlorine-containing organic compounds in removing waste oil | |
| CN107059010A (en) | Cupric alkaline etching liquid circular regeneration equipment for reclaiming and method | |
| CN102795722B (en) | Method for treating waste water generated from surface treatment of aluminum products | |
| CN206828643U (en) | Cupric alkaline etching liquid circular regeneration equipment for reclaiming | |
| CN102086251B (en) | Continuous alkali washing method of C5 petroleum resin | |
| CN101518747A (en) | Recycling system of chlorination mother solution and recycling method thereof | |
| CN104311741A (en) | Continuous production method and continuous washing method for C5 petroleum resin | |
| CN106540911A (en) | The cleaning method of normal butane method production maleic anhydride switching cooler used | |
| CN108793652A (en) | A kind of pickling sludge resource processing apparatus and technique | |
| CN205308121U (en) | Fluoridize hydrogen production vent gas treatment system in | |
| CN105489961B (en) | A kind of lead mud retracting device and operating method | |
| CN208019017U (en) | A kind of vehicle-mounted high pressure water cleaning circulator of environmental protection | |
| CN205773371U (en) | One has wastewater treatment function activated carbon granule rinsing device | |
| CN106220508B (en) | It reduces the acidity of cetane number improver and removes organic and inorganic impurity method | |
| CN208717127U (en) | A kind of pickling sludge resource processing apparatus | |
| CN209178485U (en) | Spent acid recycles remanufacture line | |
| CN212431737U (en) | Quick processing apparatus of annex of magnesium alloy melting crucible | |
| CN204779446U (en) | Device of emulsification phenomenon in reduction petroleum resin washing system | |
| CN210193576U (en) | Waste water treatment device in coating process | |
| CN203639274U (en) | Sequencing batch wastewater treatment equipment | |
| CN105906228A (en) | Method for preparation of cement grinding aid additive from glycerin rectification residue | |
| CN206229365U (en) | Rosin resin washes oxidation reaction apparatus | |
| CN205340260U (en) | A device for rinsing mud sheet frame dehydration filter cloth | |
| CN107523836A (en) | A kind of steel acidleach wash after Waste Sulfuric Acid and waste hydrochloric acid mixed liquor recoverying and utilizing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |