CN112481624B - Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device - Google Patents
Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device Download PDFInfo
- Publication number
- CN112481624B CN112481624B CN201910860599.9A CN201910860599A CN112481624B CN 112481624 B CN112481624 B CN 112481624B CN 201910860599 A CN201910860599 A CN 201910860599A CN 112481624 B CN112481624 B CN 112481624B
- Authority
- CN
- China
- Prior art keywords
- acid
- purifying agent
- pipeline
- regeneration system
- valve
- 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.)
- Active
Links
- 239000002253 acid Substances 0.000 title claims abstract description 350
- 230000008929 regeneration Effects 0.000 title claims abstract description 95
- 238000011069 regeneration method Methods 0.000 title claims abstract description 95
- 238000000746 purification Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000012629 purifying agent Substances 0.000 claims abstract description 113
- 239000002699 waste material Substances 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 238000003860 storage Methods 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 239000008237 rinsing water Substances 0.000 claims abstract description 26
- 238000011403 purification operation Methods 0.000 claims abstract description 22
- 238000004321 preservation Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011033 desalting Methods 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- 229910001252 Pd alloy Inorganic materials 0.000 claims description 3
- 239000004063 acid-resistant material Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229910000856 hastalloy Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 19
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 14
- 239000000843 powder Substances 0.000 description 12
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000005554 pickling Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 230000001603 reducing effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- HOWHQWFXSLOJEF-MGZLOUMQSA-N systemin Chemical compound NCCCC[C@H](N)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(O)=O)C(=O)OC(=O)[C@@H]1CCCN1C(=O)[C@H]1N(C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H]2N(CCC2)C(=O)[C@H]2N(CCC2)C(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)N)C(C)C)CCC1 HOWHQWFXSLOJEF-MGZLOUMQSA-N 0.000 description 1
- 108010050014 systemin Proteins 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses an automatic purification device of a concentrated acid pipeline of an acid regeneration system and a use method thereof, wherein the device comprises a purifying agent storage tank for storing purifying agent and a heating coil coiled in the purifying agent storage tank for directly heating the purifying agent; the purifying agent storage tank is communicated with the inlet of the roasting furnace pump in the acid regeneration system through a pipeline, and the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode is realized by automatically switching valves on a liquid outlet pipeline and a concentrated acid filter pipeline in the acid regeneration system. According to the invention, under the conditions that the acid regeneration system is not stopped and the burner does not flameout during normal operation, the mode of the regeneration system is automatically switched, so that the timing purification of key equipment such as a roasting furnace, a Venturi preconcentrator and the like is realized, the concentrated acid pipeline which is easy to scale and block is purified, the frequent starting and stopping of the regeneration system due to the system blocking is avoided, and the energy waste of the acid regeneration system is reduced.
Description
Technical Field
The invention relates to the technical field of acid pickle regeneration systems, in particular to an automatic purification device for a concentrated acid pipeline of an acid regeneration system and a use method thereof.
Background
The technology for regenerating acid washing waste acid liquid such as hydrochloric acid, hydrofluoric acid/nitric acid mixed acid and the like in steel and chemical enterprises is commonly used at present, and the system operation mode comprises waste acid operation, rinsing water operation and desalted water (pure water) operation. The normal production of the system generally requires stable operation of waste acid, and is only assisted in the operation of rinsing water, desalted water/pure water operation modes in the conditions of on-off and accident.
The spray roasting waste acid regeneration technology generally comprises the following steps: (1) After the acid regeneration system is started, the temperature of the roasting furnace is continuously heated, so that a hydrolysis reaction temperature field in the roasting furnace is gradually built. The method comprises the steps of starting a Venturi pre-concentrator from a supplementary liquid level to converting into rinsing water, opening a Venturi pre-concentrator pump and a roasting furnace pump automatic valve after a roasting furnace reaches the temperature of a lower gun, starting the roasting furnace pump, spraying a part of circulating liquid in the Venturi pre-concentrator from the top of the roasting furnace through acid guns, and continuously adjusting the quantity of the acid guns until a temperature field of hydrolysis reaction in the roasting furnace is completely established, wherein before the temperature field, both the roasting furnace and the Venturi pre-concentrator are in a rinsing water operation mode. After the temperature field is established, the acid regeneration system is switched to a waste acid operation mode, the Venturi preconcentrator closes the rinsing water inlet valve and opens the waste acid inlet valve, the medium in the system is gradually changed from rinsing water to waste acid, and then the medium in the system is changed from waste acid to concentrated acid, so that a large amount of energy consumption of hydrolysis chemical reaction in the roasting furnace is saved. (2) Under the normal production accident-free state, the acid regeneration system is operated by waste acid until the flow of the concentrated acid pipeline sprayed into the roasting furnace is rapidly reduced or the pressure of the pipeline is continuously increased, and then the acid gun is required to be cleaned by manual intervention to remove trapped impurities. This keeps the system operating on spent acid. (3) When the waste acid reserve is insufficient to maintain the acid regeneration system to continue to operate the waste acid, the acid regeneration system is converted into rinse water operation, the waste acid inlet valve of the venturi pre-concentrator is closed, the rinse water inlet valve is opened, concentrated acid in the venturi pre-concentrator begins to dilute until the concentrated acid is replaced by the rinse water, the roasting furnace is converted from spraying waste acid to spraying rinse water, and after the waste acid is basically rinse water in the venturi pre-concentrator, the acid regeneration system is finally converted into desalted water operation, so that the shutdown condition is achieved. The acid regeneration system basically goes through several processes of rinsing water operation-acid operation-rinsing water operation-desalted water operation from startup to shutdown.
In recent years, along with the application of technologies such as ESP continuous casting and rolling sheet pickling, hot rolled sheet pickling, silicon steel pickling and the like, the pickling waste liquid component becomes more and more complex, a large amount of silicon/manganese/aluminum/calcium/rubber and other impurities are introduced into the waste acid liquid in the pickling process, after the waste acid liquid containing the impurities enters an acid regeneration system and is subjected to heat exchange and concentration by the acid regeneration system, the dissolubility of soluble salt is greatly reduced along with the rise of temperature, the waste acid is extremely easy to be greatly separated out from the concentrated acid liquid, and is adhered to a concentrated waste acid path pipeline and part of equipment inner wall, and a concentrated waste acid system, particularly a concentrated acid pipeline, is adhered and scaled seriously by long-term waste acid operation, so that a pipeline system is blocked, a concentrated acid pipeline flow passage is smaller, the system processing capacity is smaller, and the normal production of the acid regeneration system is seriously affected by serious deviation of operating parameters; under the influence of the factors, the system is frequently stopped to manually clean and dredge a concentrated acid system (comprising pipelines and equipment), so that the annual working hours of the system are greatly shortened, the scaling layer is cleaned with great manpower and material resources, the cleaning workload of maintenance personnel is increased, and the pipelines and the equipment are easily damaged in the cleaning process; meanwhile, the system is frequently started and stopped in a short time, the time of rinsing water operation and desalted water operation is greatly increased, so that fuel and other energy media are wasted, the running cost of enterprises is greatly increased, and even continuous starting of the pickling system is affected in severe cases. On the other hand, the frequent and short-time start-stop of the system also can shorten the service life of the roasting furnace refractory, and increase the damage risk of key equipment of the acid regeneration system.
Therefore, how to perform on-line purification of the acid regeneration equipment and the concentrated acid pipeline in a continuous starting state reduces frequent start and stop of the acid regeneration system, and is a key place for guaranteeing the service life of the acid regeneration system and realizing energy conservation and consumption reduction of the system.
Disclosure of Invention
The invention aims to provide an automatic purification device for a concentrated acid pipeline of an acid regeneration system and a use method thereof, which realize the timing purification of key equipment such as a roasting furnace, a Venturi preconcentrator and the like by automatically switching operation modes under the conditions of no shutdown and normal work of a burner, and realize the timing self-purification of the concentrated acid pipeline which is easy to scale and block.
In order to achieve the above object, the present invention provides the following technical solutions:
an automatic purifying device of a concentrated acid pipeline of an acid regeneration system comprises a purifying agent storage tank for storing purifying agent and a heating coil coiled in the purifying agent storage tank for directly heating the purifying agent; the purifying agent storage tank is communicated with the inlet of the roasting furnace pump in the acid regeneration system through a pipeline, and the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode is realized by automatically switching valves on a liquid outlet pipeline and a concentrated acid filter pipeline in the acid regeneration system.
Preferably, the purifying agent storage tank is made of acid-resistant materials.
Preferably, the purifying agent in the purifying agent storage tank is an alkaline purifying agent or a fluoride purifying agent.
Preferably, the heating coil is made of acid and alkali resistant metal, and is made of any one of titanium, titanium palladium alloy, hastelloy and niobium, and the wall thickness of the heating coil is not less than 3mm.
Preferably, the purifying agent storage tank is provided with a liquid level detection device, a temperature detection device and a PH/ORP detection device.
Preferably, the purifying agent storage tank is connected with a purifying agent circulating pressurizing pump.
The automatic purification device for the concentrated acid pipeline of the acid regeneration system, which is used in any one of the above methods, comprises the following steps:
the purifying agent storage tank is communicated with a roasting furnace pump inlet in the acid regeneration system through a pipeline;
when the acid regeneration system is converted into a self-purification mode, a purifying agent circulating booster pump is started, a pipeline valve of a concentrated acid filter is automatically closed by the system, the purifying agent circulating booster pump is opened to a roasting furnace pump valve, the purifying agent in a purifying agent storage tank is pumped to an external acid gun at the top of a furnace through a roasting furnace, and flows back to the purifying agent storage tank through an external acid gun waste acid valve and a purifying pipeline valve for recirculation;
after the purification of the acid gun outside the furnace is finished, a purifying agent circulating pressurizing pump is closed, the purifying agent circulating pressurizing pump is closed to a roasting furnace pump valve, a concentrated acid filter pipeline valve is opened, a waste acid valve and a purifying pipeline valve are closed, a desalting water valve and an acid gun main valve are opened, and the purified acid gun pipeline is cleaned by desalted water, so that the purified acid gun pipeline is thoroughly cleaned and has acid operation conditions; then the purified acid gun is lowered into the furnace, other acid guns are put forward for purification treatment, and the like, and all the concentrated acid pipelines and the acid guns are cleaned.
The automatic purification device for the concentrated acid pipeline of the acid regeneration system and the use method thereof provided by the invention can realize the timing purification of key equipment such as a roasting furnace, a Venturi preconcentrator and the like through the automatic switching of the mode of the regeneration system under the conditions that the acid regeneration system is not stopped and the burner does not flameout in normal operation, and can purify the concentrated acid pipeline which is easy to scale and block, thereby avoiding frequent starting and stopping of the regeneration system due to the system blocking, reducing the energy waste of the acid regeneration system, reducing the labor intensity and difficulty of manual disassembly and cleaning, ensuring the continuous waste acid operation stability of the acid regeneration system, and having obvious energy saving and consumption reducing effects.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a use state diagram of an automatic purification device for a concentrated acid pipeline of an acid regeneration system according to an embodiment of the present invention.
Reference numerals illustrate:
1. a venturi preconcentrator; 2. a preconcentrator pump; 3. a concentrated acid filter; 4. a roasting furnace pump; 5. acid gun in the furnace; 6. an acid gun outside the furnace; 7. a roasting furnace; 8. a cyclone dust collector; 9. a purifying agent storage tank; 10. a heating coil; 11. a purifying agent circulating pressurizing pump; 12. an acid gun waste acid valve outside the furnace; 13. an acid gun purifying pipeline valve outside the furnace; 14. desalting water valve of acid gun outside the furnace; 15. an acid gun main valve outside the furnace; 16. an acid gun waste acid valve in the furnace; 17. an acid gun purifying pipeline valve in the furnace; 18. desalting water valve of acid gun in furnace; 19. an acid gun main valve in the furnace.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the statement "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article or terminal device comprising the element. Further, herein, "greater than," "less than," "exceeding," and the like are understood to not include the present number; "above", "below", "within" and the like are understood to include this number.
An acid regeneration system purification process includes an acid operation mode (acid operation), a rinse water operation mode (water operation), a desalted water operation mode (desalted water operation), a self-purification operation mode (self-purification operation), a heat preservation mode; wherein the acid operation mode (acid operation), the rinse water operation mode (water operation) and the desalted water operation mode (desalted water operation) are used for starting and stopping the acid regeneration system and normal production, and the self-purification operation mode (self-purification operation) and the heat preservation mode are used for reducing frequent starting and stopping of the acid regeneration system and cleaning various equipment in the acid regeneration system and the operation mode of purifying and concentrating acid circulation pipelines; the acid regeneration system can be switched to a self-cleaning operation mode under any production state, and can be switched to other modes at any time after the self-cleaning operation mode is completed.
In the self-cleaning operation mode (self-cleaning operation) and the heat preservation mode, the burner of the roasting furnace 7 does not flameout, the main burner operates normally, and the roasting furnace 7 and the venturi pre-concentrator 1 are supplemented with desalted water.
An automatic purification device of a concentrated acid pipeline of an acid regeneration system as shown in fig. 1 comprises a purifying agent storage tank 9 for storing purifying agent and a heating coil 10 coiled in the purifying agent storage tank for directly heating the purifying agent; the purifying agent storage tank 9 is communicated with the inlet of the roasting furnace pump 4 in the acid regeneration system through a pipeline, and the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode is realized by automatically switching valves on a liquid outlet pipeline and a concentrated acid filter 3 pipeline in the acid regeneration system.
According to the purification process, the automatic purification device of the concentrated acid pipeline of the acid regeneration system is arranged in the acid regeneration system, so that the novel acid regeneration system with the automatic purification function and the heat preservation function is formed.
As shown in fig. 1, the novel acid regeneration system comprises a venturi preconcentrator 1, a preconcentrator pump 2, a concentrated acid filter 3, a roasting furnace pump 4, an in-furnace acid gun waste acid valve 16, an in-furnace acid gun main valve 19, an in-furnace acid gun 5 and a roasting furnace 7 which are sequentially connected through pipelines; the venturi pre-concentrator 1 is respectively provided with a pickling waste liquid inlet, a rinsing water inlet and a desalted water inlet. The roasting furnace 7 is provided with an acid gun 6 outside the furnace. The cyclone dust collector 8 is communicated with the roasting furnace 7.
The novel acid regeneration system further comprises the self-purification device which has a heat preservation function and can perform alkaline flushing, the self-purification device is provided with a separate liquid outlet pipeline, a cross concentrated acid filter 3 is connected to an inlet of a roasting furnace pump 4, and the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode is realized through automatically switching valves on the liquid outlet pipeline and the concentrated acid filter pipeline.
The self-purification device comprises a purifying agent storage tank 9 for storing purifying agent and a heating coil 10 coiled in the purifying agent storage tank 9 and used for directly heating the purifying agent, wherein the purifying agent storage tank 9 is communicated with the independent liquid outlet pipeline, is connected to the inlet of the roasting furnace pump 4 across the concentrated acid filter 3, and realizes the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode by automatically switching valves on the liquid outlet pipeline and the concentrated acid filter pipeline.
Preferably, the purifying agent storage tank 9 is made of acid-resistant materials, and the effective volume meets the requirements of the self-purifying device.
The purifying agent in the purifying agent storage tank 9 is alkaline purifying agent or fluoride purifying agent, and the temperature of the purifying agent is not lower than 80 ℃ during self-purification. When the temperature of the purifying agent is lower than 80 ℃, the self-purifying mode can be started.
The heating coil 10 is in communication with the venturi pre-concentrator 1 via an automatic valve and is heated by the circulating liquid of the venturi pre-concentrator 1. The heat exchange liquid in the heating coil 10 comes from the Venturi pre-concentrator 1, the temperature of circulating liquid in the Venturi pre-concentrator 1 is 85-95 ℃, and under the self-purification operation mode (self-purification operation), the valve between the pre-concentrator 1 and the purifying agent storage tank 9 is automatically opened, and the heat exchange liquid circularly flows in the Venturi pre-concentrator 1 and the heating coil 10.
The heating coil 10 in the purifying agent storage tank 9 is communicated with the venturi pre-concentrator 1 through an automatic valve. When the acid regeneration system is in acid operation or water operation, the valve is automatically switched to the path of the Venturi preconcentrator 1, the concentrated acid filter 3 and the roasting furnace pump 4; when the acid regeneration system is in a self-cleaning mode of operation or a soak mode, the valve is automatically switched to the heating coil 10 path. In the self-purification operation mode or the heat preservation mode, the temperature of circulating liquid in the venturi pre-concentrator 1 is 85-95 ℃, and the circulating liquid in the venturi pre-concentrator 1 flows back to the venturi pre-concentrator 1 after entering the heating coil 10 to heat the purifying agent.
Preferably, the heating coil 10 is in communication with an external heat source. The heat source of the heating coil 10 is supplemented with a certain external heat source, such as steam or hot water, in addition to the circulating liquid of the venturi pre-concentrator 1.
The purifying agent is heated by the circulating liquid of the Venturi pre-concentrator 1; or by an external heat source (e.g., steam, hot water, etc.); or by a combination of the circulating liquid of the venturi pre-concentrator 1 and an external heat source (e.g. steam, hot water, etc.).
The temperature of the circulating liquid in the venturi pre-concentrator 1 is 85-95 ℃, the circulating liquid in the venturi pre-concentrator 1 is heated by direct heat exchange of flue gas of the roasting furnace, and the purifying agent is heated by indirect heat exchange with the circulating liquid in the venturi pre-concentrator 1.
Preferably, the purifying agent storage tank 9 is provided with a liquid level detection device, a temperature detection device and a PH/ORP detection device (such as a GLI 3/4 inch composite PH/ORP sensor of Hash company). The self-purification device is a closed circulation system and is used for supplementing liquid according to automatic control of the liquid level of the storage tank.
The purifying agent storage tank 9 is connected with a purifying agent circulating pressurizing pump 11, and can be used for pressurizing the purifying agent singly or in cascade with the roasting furnace pump 4 to supply the purifying agent to the acid gun 6 outside the furnace at the top of the roasting furnace 7.
In the self-cleaning operation mode, the number of acid guns inserted into the roasting furnace 7 is not less than 1, the number of acid guns which are not inserted into the furnace outside the roasting furnace 7 is not less than 1, and the self-cleaning operation can be carried out on one or more acid guns and a pipeline system outside the roasting furnace at the same time, and the purification operation is also carried out on the roasting furnace 7 and the Venturi preconcentrator 1.
In the self-cleaning operation mode, the acid gun inserted into the roasting furnace 7 runs desalted water, the acid gun and the pipeline system outside the roasting furnace 7 are not inserted into the furnace, and the purifying agent is returned to the purifying agent storage tank 9 through automatic valve switching.
The acid gun at the top of the roasting furnace and different fluid mediums in the pipeline are switched through an automatic valve, so that mode switching is realized.
When the mode is switched, the venturi pre-concentrator 1 cycle automatically switches between the scavenger tank 9 and the concentrated acid filter 3.
Preferably, the heating coil 10 is made of acid and alkali resistant metal, and is made of any one of titanium (Ti II), titanium palladium alloy (Ti 9), hastelloy (with the mark not lower than C276) and niobium (Nb), and the wall thickness of the heating coil is not less than 3mm.
The above-mentioned acid regeneration system, after installing the automatic cleaning device, the cleaning operation method is as follows:
when the waste acid reserves are insufficient, or the pressure of the waste acid at the top of the roasting furnace is continuously increased, and the spraying amount is continuously reduced, and the required spraying amount can not be ensured through cleaning the acid gun, the acid regeneration system is converted into a water operation mode and a desalted water operation mode for preliminary replacement, and the roasting furnace and the Venturi pre-concentrator are both supplemented with desalted water; the waste acid inlet valve of the venturi pre-concentrator is closed, the desalted water valve is opened, the concentrated waste acid in the venturi pre-concentrator is diluted and replaced, and the density and acidity of the circulating liquid are detected by the pipeline detection element of the venturi pre-concentrator; to a pre-concentrator circulation liquid density of approximately 1kg/dm 3 When the system is left and right, the system has self-cleaning operation conditions;
when the acid regeneration system is converted into a self-purification mode, an acid gun in the roasting furnace is lifted out of the furnace, a waste acid valve and a purification pipeline valve on an acid gun pipeline outside the furnace are opened, a desalting water valve and an acid gun main valve are closed, and at the moment, a self-purification pipeline is smooth, so that the concentrated acid pipeline can be self-purified; meanwhile, 1 acid gun is not yet needed in the roasting furnace, desalted water is sprayed in the furnace, a desalting water valve and an acid gun main valve on an acid gun pipe in the furnace are opened, a waste acid valve and a purifying pipeline valve are closed, and the environment in the roasting furnace is purified; meanwhile, the waste acid valve and the rinsing water valve of the venturi pre-concentrator are closed, and the desalted water valve is opened to purify the venturi pre-concentrator;
when the acid regeneration system is converted into a self-purification mode, a purifying agent circulating booster pump is started, a pipeline valve of a concentrated acid filter is automatically closed by the system, the purifying agent circulating booster pump is opened to a roasting furnace pump valve, the purifying agent in a purifying agent storage tank is pumped to an external acid gun at the top of a furnace through a roasting furnace, and flows back to the purifying agent storage tank through an external acid gun waste acid valve and a purifying pipeline valve for recirculation, wherein the purifying cycle time of a single acid gun is less than 8 hours;
after the purification of the acid gun outside the furnace is finished, a purifying agent circulating pressurizing pump is closed, the purifying agent circulating pressurizing pump is closed to a roasting furnace pump valve, a concentrated acid filter pipeline valve is opened, a waste acid valve and a purifying pipeline valve are closed, a desalting water valve and an acid gun main valve are opened, and the purified acid gun pipeline is cleaned by desalted water, so that the purified acid gun pipeline is thoroughly cleaned and has acid operation conditions; then the purified acid gun is lowered into the furnace, other acid guns are put forward for purification treatment, and the like, and all the concentrated acid pipelines and the acid guns are cleaned.
As shown in fig. 1, the acid regeneration system in this embodiment, a specific purification operation method, is as follows:
(1) The acid regeneration system is in an acid operation mode during normal production, after the acid washing waste acid liquid enters the Venturi preconcentrator 1 to be concentrated, the self-circulation is completed through the preconcentrator pump 2, the valve between the preconcentrator pump 2 and the concentrated acid filter 3 is opened, and the acid washing waste acid is sprayed into the roasting furnace 7 in the form of mist drops through the concentrated acid filter 3, the roasting furnace pump 4, the in-furnace acid gun waste acid valve 16, the in-furnace acid gun main valve 19 and the in-furnace acid gun 5Combustion air and fuel gas (4-6 Kpa) enter the roasting furnace 7 along the burners uniformly distributed on the circumference of the roasting furnace, and combustion reaction occurs in the furnace, so that heat and O required by the reaction are provided for thermochemical reaction of acid mist liquid drops in the roasting furnace 7 2 . After the waste acid liquid drops undergo thermochemical reaction in the roasting furnace 7, high-temperature flue gas and a large amount of high-temperature ferric oxide powder are generated, and most of the ferric oxide powder directly falls to the bottom of the roasting furnace 7 under the action of gravity so as to be separated from the high-temperature flue gas; a small amount of ferric oxide powder is carried out of the roasting furnace 7 by high-temperature flue gas, is separated again in the cyclone separator 8 under the action of centrifugal force and gravity, and returns to the bottom of the roasting furnace 7 through the rotary blanking valve. The high-temperature ferric oxide powder (550 ℃) at the bottom of the roasting furnace 7 enters a ferric oxide powder collecting system through a bottom crusher and a rotary blanking valve. After long-time waste acid operation, the inner wall of the iron oxide powder roasting furnace is stuck, a concentrated acid pipeline is blocked, and the inner crystal of the venturi pre-concentrator is blocked, so that the furnace capacity of the roasting furnace is reduced, the pressure of the waste acid at the furnace top is continuously increased, the spraying amount is continuously reduced, the heat exchange effect of the venturi pre-concentrator is reduced, and the operation of an acid regeneration system is unbalanced.
(2) When the acid regeneration system can not normally perform the acid operation any more, the operation mode is firstly converted into a rinsing water operation mode, the roasting furnace 7 and the venturi pre-concentrator 1 perform the rinsing water operation, and the roasting furnace 7 and the venturi pre-concentrator 1 start to be purified. At this time, the waste acid valve of the feed liquid of the venturi pre-concentrator 1 is closed, the rinsing water valve is opened, the waste acid in the venturi pre-concentrator 1 starts to be diluted, and when the density of the venturi pre-concentrator 1 is reduced to be close to 1kg/dm 3 When the venturi pre-concentrator 1 is left and right, the rinsing water valve of the venturi pre-concentrator 1 is closed, the desalted water valve is opened, and the acidity of the circulating liquid in the venturi pre-concentrator 1 is continuously reduced.
(3) After the venturi pre-concentrator 1 has been opened for less than 2 hours, the acid regeneration system is switched to desalinated water operation. 1 acid gun (namely, an external acid gun 6) is lifted from the roasting furnace 7, after the gun is lifted in place, an external acid gun desalted water valve 14 and an external acid gun main valve 15 are closed, and an external acid gun waste acid valve 12 and an external acid gun purifying pipeline valve 13 are opened.
(4) When the circulating liquid density in the Venturi preconcentrator 1 is close to 1kg/dm3, the valve is switched from the path of the Venturi preconcentrator 1, the concentrated acid filter 3 and the roasting furnace pump 4 to the path of the heating coil 10 of the purifying agent storage tank 9, meanwhile, the valve between the purifying agent storage tank 9 and the roasting furnace pump 4 is opened, the purifying agent in the purifying agent storage tank 9 is heated through the Venturi preconcentrator 1, and when the temperature of the purifying agent reaches 80 ℃, the acid regeneration system is automatically switched to a self-purification mode.
(5) When the system is converted into a self-purification mode, the purifying agent circulating booster pump 11 is started, and the purifying agent flows back to the purifying agent storage tank 9 through the purifying agent storage tank outlet pipeline, the roasting furnace pump 4, the acid gun waste acid valve 12 outside the furnace and the acid gun purifying pipeline valve 13, so that the equipment and the pipeline system through which the concentrated acid flows are thoroughly cleaned, and in the process, the purifying agent and dirt in the equipment and the pipeline system have certain chemical reaction, and the dirt is fused into the purifying agent, so that the concentrated acid pipeline and the equipment can be thoroughly purified.
(6) When the acid regeneration system is in a self-purification mode, the in-furnace acid gun waste acid valve 16, the in-furnace acid gun purification pipeline valve 17, the in-furnace acid gun desalination water valve 18 and the in-furnace acid gun main valve 19 are closed, and the in-furnace acid gun 5 sprays desalted water to purify the roasting furnace.
(7) When the first acid gun outside the furnace is self-purified, the valve between the purifying agent storage tank 9 and the roasting furnace pump 4 is closed, the valve between the venturi pre-concentrator 1 and the concentrated acid filter 3 and the roasting furnace pump 4 is opened, meanwhile, the acid gun outside the furnace main valve 15 is opened, the acid gun outside the furnace purifying pipeline valve 13 is closed, the concentrated acid pipeline and the acid gun outside the furnace 6 are washed by using the circulating liquid in the venturi pre-concentrator 1, and the concentrated acid pipeline and the purifying liquid in the equipment are washed cleanly.
(8) After the acid gun 6 outside the furnace is washed cleanly, the acid gun 6 outside the furnace is lowered into the roasting furnace, the waste acid valve 12 of the acid gun outside the furnace and the purifying pipeline valve 13 of the acid gun outside the furnace are closed, the desalted water valve 14 of the acid gun outside the furnace and the total valve 15 of the acid gun outside the furnace are opened, and desalted water is introduced to continue purifying the roasting furnace 7. After the system is stable, the other in-furnace acid gun 5 starts to perform self-cleaning operation from the lifting in the furnace, and so on.
As shown in fig. 1, the acid regeneration system in this embodiment is another specific purification operation method as follows:
(1) Acid regeneration systemIn the normal production, the acid operation mode is that acid washing waste acid liquid enters a Venturi preconcentrator 1 to be concentrated, the self-circulation is completed through a preconcentrator pump 2, the valves between the preconcentrator pump 2 and a concentrated acid filter 3 are opened, the concentrated acid filter 3, a roasting furnace pump 4, an in-furnace acid gun waste acid valve 16, an in-furnace acid gun main valve 19 and an in-furnace acid gun 5 are sprayed into a roasting furnace 7 in the form of mist droplets, combustion air and fuel gas (4-6 Kpa) enter the roasting furnace 7 along burners uniformly distributed on the circumference of the roasting furnace, combustion reaction occurs in the furnace, and heat and O required by the reaction are provided for the thermochemical reaction of acid mist droplets in the roasting furnace 7 2 . After the waste acid liquid drops undergo thermochemical reaction in the roasting furnace 7, high-temperature flue gas and a large amount of high-temperature ferric oxide powder are generated, and most of the ferric oxide powder directly falls to the bottom of the roasting furnace 7 under the action of gravity so as to be separated from the high-temperature flue gas; a small amount of ferric oxide powder is carried out of the roasting furnace 7 by high-temperature flue gas, is separated again in the cyclone separator 8 under the action of centrifugal force and gravity, and returns to the bottom of the roasting furnace 7 through the rotary blanking valve. The high-temperature ferric oxide powder (550 ℃) at the bottom of the roasting furnace 7 enters a ferric oxide powder collecting system through a bottom crusher and a rotary blanking valve. After long-time waste acid operation, the inner wall of the iron oxide powder roasting furnace is stuck, a concentrated acid pipeline is blocked, and the inner crystal of the venturi pre-concentrator is blocked, so that the furnace capacity of the roasting furnace is reduced, the pressure of the waste acid at the furnace top is continuously increased, the spraying amount is continuously reduced, the heat exchange effect of the venturi pre-concentrator is reduced, and the operation of an acid regeneration system is unbalanced.
(2) When the acid regeneration system can not normally perform the acid operation any more, the operation mode is firstly converted into a rinsing water operation mode, the roasting furnace 7 and the venturi pre-concentrator 1 perform the rinsing water operation, and the roasting furnace 7 and the venturi pre-concentrator 1 start to be purified. At this time, the waste acid valve of the feed liquid of the venturi pre-concentrator 1 is closed, the rinsing water valve is opened, the waste acid in the venturi pre-concentrator 1 starts to be diluted, and when the density of the venturi pre-concentrator 1 is reduced to 1kg/dm 3 When the venturi pre-concentrator 1 is left and right, the rinsing water valve of the venturi pre-concentrator 1 is closed, the desalted water valve is opened, and the acidity of the circulating liquid in the venturi pre-concentrator 1 is continuously reduced.
(3) After the venturi pre-concentrator 1 has been opened for less than 2 hours, the acid regeneration system is switched to desalinated water operation. All acid guns are lifted from the roasting furnace 7, after the gun lifting is in place, all acid gun desalted water valves 14 and acid gun main valves 15 are closed, and waste acid valves 12 and purifying pipeline valves 13 are opened. When all acid guns are lifted in place, the gas quantity of the burner of the roasting furnace is reduced to the minimum consumption for maintaining the control temperature of the furnace top to 390-410 ℃ so that the roasting furnace is in a heat preservation state.
(4) When the circulating liquid density in the Venturi preconcentrator 1 is close to 1kg/dm3, the valve is switched from the path of the Venturi preconcentrator 1, the concentrated acid filter 3 and the roasting furnace pump 4 to the path of the heating coil 10 of the purifying agent storage tank 9, and meanwhile, the valve between the purifying agent storage tank 9 and the roasting furnace pump 4 is opened, and the purifying agent in the purifying agent storage tank 9 is heated through the Venturi preconcentrator 1. When the temperature of the purifying agent can not reach 80 ℃ when the circulating liquid of the venturi pre-concentrator is heated, the valve is automatically switched, the heat source of the purifying agent tank is switched to an external heat source-purifying agent tank heating coil pipe from the venturi pre-concentrator-purifying agent tank heating coil pipe, the external heat source is utilized to continuously heat the purifying agent until the temperature of the purifying agent reaches the set temperature, and then the acid regeneration system is automatically switched to a self-purifying mode.
(5) When the system is converted into a self-purification mode, the purifying agent circulating booster pump 11 is started, and the purifying agent flows back to the purifying agent storage tank 9 through the purifying agent storage tank outlet pipeline, the roasting furnace pump 4, the acid gun waste acid valve 12 and the acid gun purifying pipeline valve 13, so that the equipment and the pipeline system through which the concentrated acid flows are thoroughly cleaned, and in the process, the purifying agent and dirt in the equipment and the pipeline system have certain chemical reaction, and the dirt is fused into the purifying agent, so that the concentrated acid pipeline and the equipment can be thoroughly purified.
(6) When all acid guns are purified, the valves between the purifying agent storage tank 9 and the roasting furnace pump 4 are closed, the path valves between the venturi pre-concentrator 1 and the concentrated acid filter 3 and the roasting furnace pump 4 are opened, meanwhile, the acid gun main valve 15 is opened, the purifying pipeline valve 13 is closed, the concentrated acid pipeline and the acid gun 6 outside the furnace are washed by using the circulating liquid in the venturi pre-concentrator 1, and the purifying liquid in the concentrated acid pipeline and the purifying liquid in the equipment are washed cleanly.
(7) After all acid guns are washed cleanly, the acid guns are gradually lowered into the roasting furnace 7 according to the operation flow of an acid regeneration system, and the system is gradually operated by self-purification operation/heat preservation mode, desalted water operation, rinsing water operation and waste acid operation, and the self-purification operation of the unit is finished to recover the waste acid regeneration operation.
The acid regeneration system purification process, the acid regeneration system and the purification operation method thereof can be switched to a self-purification operation mode or a heat preservation mode at any time under the production state. When the acid regeneration system is switched to a self-purification operation mode or a heat preservation mode, the system is not stopped; the roasting furnace, the Venturi preconcentrator, the concentrated acid pipeline and the equipment can be cleaned on line.
According to the purification process of the acid regeneration system, the acid regeneration system and the purification operation method thereof, the acid regeneration system can realize the automatic switching of the operation modes of the acid regeneration system under the conditions of no shutdown and no flameout of a burner, the timing purification of key equipment such as a roasting furnace, a Venturi preconcentrator and the like is realized, and the concentrated acid pipeline which is easy to scale and block can be automatically purified. Under the self-purification mode of the acid regeneration system, the conditions of blockage of a concentrated acid pipeline and serious wall hanging or crystallization blockage of key equipment for acid regeneration are greatly reduced, so that the frequent start-up and shutdown of the acid regeneration system are avoided, the energy waste of the acid regeneration system is greatly reduced, the labor intensity and difficulty of manually cleaning the blockage are also greatly reduced, the stability of continuous acid operation of the acid regeneration system is ensured, and the annual operation of the acid regeneration system is prolonged. The invention has obvious economic benefit for enterprises and also has obvious effects of energy conservation and consumption reduction.
Meanwhile, in order to remove the blocked scaling substances in the system, the cleaning agent is required to be ensured to be less than 80 ℃, the invention can fully utilize the waste heat of the flue gas heat in the unit production process to heat, realizes the effective combination of the self-cleaning device and the acid regeneration system, is also beneficial to the automatic control of the acid regeneration system, and reduces the manual operation.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
1. An automatic purifying device of a concentrated acid pipeline of an acid regeneration system is characterized by comprising a purifying agent storage tank for storing purifying agent and a heating coil coiled in the purifying agent storage tank for directly heating the purifying agent; the purifying agent storage tank is communicated with a roasting furnace pump inlet in the acid regeneration system through a pipeline, and the switching of an acid operation mode, a rinsing water operation mode, a desalted water operation mode, a self-purification operation mode and a heat preservation mode is realized by automatically switching valves on a liquid outlet pipeline and a concentrated acid filter pipeline in the acid regeneration system;
the application method is as follows:
when the acid regeneration system is converted into a self-purification mode, a purifying agent circulating booster pump is started, a pipeline valve of a concentrated acid filter is automatically closed by the system, the purifying agent circulating booster pump is opened to a roasting furnace pump valve, the purifying agent in a purifying agent storage tank is pumped to an external acid gun at the top of a furnace through a roasting furnace, and flows back to the purifying agent storage tank through an external acid gun waste acid valve and a purifying pipeline valve for recirculation;
after the purification of the acid gun outside the furnace is finished, a purifying agent circulating pressurizing pump is closed, the purifying agent circulating pressurizing pump is closed to a roasting furnace pump valve, a concentrated acid filter pipeline valve is opened, a waste acid valve and a purifying pipeline valve are closed, a desalting water valve and an acid gun main valve are opened, and the purified acid gun pipeline is cleaned by desalted water, so that the purified acid gun pipeline is thoroughly cleaned and has acid operation conditions; then the purified acid gun is lowered into the furnace, other acid guns are put forward for purification treatment, and the like, and all the concentrated acid pipelines and the acid guns are cleaned.
2. The apparatus according to claim 1, wherein the purifying agent tank is made of an acid-resistant material.
3. The apparatus according to claim 1, wherein the purifying agent in the purifying agent tank is an alkaline purifying agent or a fluoride purifying agent.
4. The automatic purification device for concentrated acid pipelines of an acid regeneration system according to claim 1, wherein the heating coil is made of acid and alkali resistant metal, and is made of any one of titanium, titanium palladium alloy, hastelloy and niobium, and the wall thickness of the heating coil is not less than 3mm.
5. The automatic purification device for concentrated acid pipelines of an acid regeneration system according to claim 1, wherein a liquid level detection device, a temperature detection device and a PH/ORP detection device are arranged on the purifying agent storage tank.
6. The apparatus according to claim 1, wherein the purifying agent tank is connected to a purifying agent circulating pressurizing pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860599.9A CN112481624B (en) | 2019-09-11 | 2019-09-11 | Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860599.9A CN112481624B (en) | 2019-09-11 | 2019-09-11 | Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112481624A CN112481624A (en) | 2021-03-12 |
| CN112481624B true CN112481624B (en) | 2024-03-22 |
Family
ID=74920484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910860599.9A Active CN112481624B (en) | 2019-09-11 | 2019-09-11 | Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112481624B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536090B (en) * | 2022-10-09 | 2024-04-12 | 深圳天华机器设备股份有限公司 | Film-removing liquid medicine recovery device |
| CN221267144U (en) * | 2023-11-30 | 2024-07-05 | 中冶南方工程技术有限公司 | Intelligent acid regeneration system for preventing crystallization blockage |
| CN117427351A (en) * | 2023-11-30 | 2024-01-23 | 中冶南方工程技术有限公司 | Intelligent acid regeneration system capable of preventing crystallization blockage and operation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555127A1 (en) * | 1992-02-03 | 1993-08-11 | Framatome | Process and device for decontaminating a used nuclear steam-generator |
| CN1851320A (en) * | 2006-04-28 | 2006-10-25 | 中冶南方工程技术有限公司 | Hydrochloride waste regenerating process for spray roasting |
| CN102586793A (en) * | 2012-03-09 | 2012-07-18 | 唐山建龙实业有限公司 | Treatment system for tail gas generated during acid and water conversion in cold rolling acid-washing acid-regenerating process |
| CN103382558A (en) * | 2013-07-03 | 2013-11-06 | 首钢总公司 | Method used for reducing acid regenerating venture rear negative pressure |
| CN203417888U (en) * | 2013-08-20 | 2014-02-05 | 河北钢铁股份有限公司唐山分公司 | Device for automatically cleaning ferric oxide powder in acid regeneration concentration acid pipeline |
| CN106044709A (en) * | 2016-06-06 | 2016-10-26 | 中冶南方工程技术有限公司 | Waste acid regeneration system and process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7604702B2 (en) * | 2004-10-29 | 2009-10-20 | Crest Ultrasonics Corp. | Method, apparatus, and system for bi-solvent based cleaning of precision components |
-
2019
- 2019-09-11 CN CN201910860599.9A patent/CN112481624B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555127A1 (en) * | 1992-02-03 | 1993-08-11 | Framatome | Process and device for decontaminating a used nuclear steam-generator |
| CN1851320A (en) * | 2006-04-28 | 2006-10-25 | 中冶南方工程技术有限公司 | Hydrochloride waste regenerating process for spray roasting |
| CN102586793A (en) * | 2012-03-09 | 2012-07-18 | 唐山建龙实业有限公司 | Treatment system for tail gas generated during acid and water conversion in cold rolling acid-washing acid-regenerating process |
| CN103382558A (en) * | 2013-07-03 | 2013-11-06 | 首钢总公司 | Method used for reducing acid regenerating venture rear negative pressure |
| CN203417888U (en) * | 2013-08-20 | 2014-02-05 | 河北钢铁股份有限公司唐山分公司 | Device for automatically cleaning ferric oxide powder in acid regeneration concentration acid pipeline |
| CN106044709A (en) * | 2016-06-06 | 2016-10-26 | 中冶南方工程技术有限公司 | Waste acid regeneration system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112481624A (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112481624B (en) | Automatic purification device for concentrated acid pipeline of acid regeneration system and use method of automatic purification device | |
| CN101214924B (en) | Regenerating system and technique for three-tower waste aid | |
| RU2434975C2 (en) | Installation and procedure for treatment of solutions for etching strips of silicon steel | |
| CN112481625B (en) | Acid regeneration system purification method, acid regeneration system and purification operation method thereof | |
| CN101109088A (en) | Technique for cleaning acid dirty of acid reactivating machine group inner loop type pipeline | |
| WO2013131364A1 (en) | Treatment system for tail gas generated during acid-water conversion in cold rolling acid-washing acid regeneration process | |
| WO2021218185A1 (en) | Energy-saving and environmentally-friendly steel strip electrolytic pickling system | |
| CN214990687U (en) | Intelligent detection, water quality comprehensive treatment device for scale inhibition and removal | |
| CN113185019A (en) | Intelligent detection, water quality comprehensive treatment device for scale inhibition and removal | |
| CN211098440U (en) | MBR membrane off-line cleaning system | |
| CN210367918U (en) | Pickling processing device for valve body of electromagnetic valve | |
| CN107142373A (en) | A kind of device and method for being used to eliminate continuous annealing furnace water quenching defect | |
| CN104259156B (en) | Stoving oven supply lines automatic cleaning system and purging method | |
| WO2025112454A1 (en) | Intelligent acid regeneration system for preventing crystallization clogging and operation method | |
| CN213079443U (en) | Cleaning system for polycrystalline silicon reduction furnace | |
| CN103641246A (en) | Environment-friendly type boiler scale remover and preparation method thereof | |
| CN214182310U (en) | High-efficient waste heat recovery device of flue gas edulcoration | |
| CN210138759U (en) | Pipeline cleaning spray head | |
| CN111721153B (en) | Waste water waste heat recovery system, preheating heat exchanger automatic decontamination device and automatic decontamination method | |
| CN204182641U (en) | Roaster supply lines automatic cleaning system | |
| CN108620383B (en) | Method for improving cleaning effect of color coating unit | |
| CN220364593U (en) | Cold rolled silicon steel pickling line circulation system | |
| CN106391736A (en) | Surface treatment method and system for strip steel | |
| CN117403236B (en) | A method for flushing, cleaning, and pre-filming a blast furnace water system | |
| CN221267144U (en) | Intelligent acid regeneration system for preventing crystallization blockage |
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 |