407 results about "Spent acid" patented technology

The utility model relates to a device for recovering magnesium salt tablets from industrial magnesium salt-containing wastewater, which is characterized in that magnesium salt in industrial waste acid is recovered by adopting an evaporation mode, after the magnesium salt-containing wastewater is filtered and precipitated, a supernatant solution enters an evaporation system to be evaporated and concentrated, a concentrated solution is recovered, cooling and flaking are carried out, and flaked magnesium salt is collected. The evaporation system comprises an evaporator and a condenser. The evaporation system increases the evaporation speed by enhancing evaporation; through the characteristic of normal-pressure evaporation, the problems that the boiling point is increased due to the fact that the solubility of the solution is increased, and energy consumption is increased due to the fact that the requirement for the quality of a heat source is improved in a traditional boiling evaporation process link and the evaporation system works unstably are solved. Compared with the prior art, the energy utilization efficiency is improved, the energy consumption is reduced, the operation stability of the system is improved, and the risk that the evaporator is scaled and blocked is avoided.

The invention discloses a waste sulfuric acid treatment method and device, the device comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank and a membrane separator which are connected in sequence, and the fine filtration coalescer adopts a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube as a filter material; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material; and the membrane separation system adopts one or a combined membrane of more than two of an ultrafiltration membrane, a reverse osmosis membrane and an electrodialysis membrane. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; according to the method, a physical separation means is adopted, organic polymeric oil, dissolved organic matters, dissolved salts and other impurities in the alkylated waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The invention discloses a waste sulfuric acid treatment method and system. The system comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank, a gas stripping tower, an alkaline washing tower, a molecular sieve dehydration device and a gas medium heating facility, a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube is adopted as a filter material of the fine filtering coalescer; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; a physical separation means is adopted, organic polymeric oil, dissolved organic matter, dissolved salt and other impurities in the alkylation waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The invention provides a low-consumption wet smelting process for flotation zinc oxide concentrate, which comprises the steps of pretreatment, low-acid leaching and post-treatment, and specifically comprises the following steps: adjusting the mass concentration of the raw material flotation zinc oxide concentrate to be 15-45%, adding an ultrasonic-synergistic stripping agent, and stirring uniformly; reacting for 5-45 minutes under an ultrasonic stirring condition to obtain ore pulp a; the ultrasonic-synergistic stripping agent is prepared from alkylbenzene sulfonate, octylphenol polyoxyethylene ether and persulfate; a decarburizing agent and a particle enhancer are added into the ore pulp a, the pH value is adjusted to 8.5-9.5, fine air is introduced for 5-10 min, and zinc oxide concentrate b is obtained through solid-liquid separation; waste electrolyte and / or waste acid are / is added into the zinc oxide concentrate b for a leaching reaction, and leaching liquid c is obtained; and the leaching solution c is subjected to neutralization iron removal and zinc powder replacement impurity removal, and then a zinc ingot is obtained.

The invention discloses a nitrate-containing waste liquid treatment method, which comprises: (1) waste acid treatment: diluting waste acid in a neutralization reaction kettle, adding ammonia water while stirring, controlling the temperature to be 70-95 DEG C, continuously adding ammonia water to adjust the pH value of the solution to be 7.5-10.0 after the neutralization is completed, and carrying out stirring distillation to obtain an ammonium sulfate nitrate aqueous solution or an ammonium sulfate nitrate crystal; (2) wastewater treatment: 1) wastewater steam stripping: transferring nitrate wastewater into a steam stripping kettle, adding a pH regulator to regulate the pH value to be 10-13, heating the steam stripping kettle to a boiling state by using steam, distilling, condensing and recovering nitrate in the wastewater; and 2) oxidation treatment: after steam stripping is finished, hydrogen peroxide is added into the steam stripping kettle in a boiling state, stirring reaction is performed, and the reacted wastewater can be discharged after reaching the standard. Compared with a traditional Fenton method and an activated carbon adsorption method, the method has the advantages that secondary pollutants Fe (OH) 3 generated by treatment and saturated activated carbon after adsorption can be avoided, harsh reaction conditions such as light, electricity and microwaves can be avoided, the operation cost is reduced, the method is safe, environment-friendly and free of secondary pollution, the nitrate removal rate can reach 100%, and the method is suitable for industrial production. The COD (Chemical Oxygen Demand) of the treated wastewater is less than 100mg / L, and the wastewater can reach the direct discharge standard.

The utility model discloses an evaporator and a pickling facility low-corrosion treatment device thereof. A concentrated acid tank, a first connecting pipe, a diluted acid tank and a second connecting pipe are used for a pickling process and can also be used for alkali neutralization, water washing and blow-drying. After pickling is completed, the acid storage tank can neutralize residual acid, the pipeline is neutralized by alkali and / or flushed by neutralizing liquid, and under the condition that the pump body design is saved, waste acid discharged by pickling of the evaporator can be returned to the tank for treatment, so that environmental acid pollution is avoided; the reduction evaporator and pickling equipment thereof can be further washed and blown off, so that the corrosion risk is greatly reduced; the service life of a tank pipeline is prolonged by more than 50%, the overhaul cost is reduced, the leakage condition is reduced, and the safety coefficient is improved.

The application provides an ion concentration online monitoring device and method for waste acid regeneration based on the Internet of Things, and relates to the technical field of ion monitoring. The device comprises a monitoring box, a cover plate is arranged on the upper end of the monitoring box, a feeding pipe for liquid supply is arranged in the center of the cover plate, a drain pipe for liquid discharge is arranged at the bottom of the monitoring box, a detection table is arranged at the center of the bottom of the monitoring box, a mounting hole is arranged through the center of the detection table, and a detection mounting column is arranged in the mounting hole in a matched mode. The application combines hardware and software, thereby greatly improving the detection accuracy of ion concentration.

The utility model relates to the technical field of waste acid treatment, and discloses a safe waste acid treatment device which comprises a base and further comprises a treatment barrel located above the base, and the bottom of the treatment barrel is communicated with a liquid discharge pipe through a first electromagnetic valve. According to the waste acid treatment device disclosed by the utility model, a worker can conveniently open a closing cover through the arranged adjusting assembly, so that the worker can conveniently clean the stirring assembly and the interior of the treatment barrel, and waste acid and an alkaline solution can be effectively mixed and stirred through the arranged stirring assembly; according to the waste acid neutralization device, waste acid can be effectively neutralized, so that the neutralization efficiency and effect of waste acid can be effectively improved, waste acid and an alkaline solution can be effectively weighed through a weighing quantitative assembly, manual operation of workers is not needed, the neutralization efficiency of the waste acid is effectively improved, and the workload of the workers is relieved; and the overall practicability and the safety coefficient of the device are improved.

The application discloses a continuous production process and equipment for a trifluoromethylbenzene tower, and belongs to the field of organic fluorine chemistry. The production process comprises the following steps: S1: continuously feeding trichloromethylbenzene and hydrogen fluoride into a tower reactor connected with a heat exchanger circulating cooling system in a reverse direction, so that a three-stage continuous fluorination reaction occurs in the tower reactor to obtain crude trifluoromethylbenzene, and unreacted hydrogen fluoride is separated into liquid at the top of the tower and then flows back into the tower reactor; S2: the crude trifluoromethylbenzene obtained in the reaction is subjected to nitrogen bubbling in a bubble tower, and then is continuously distilled in a rectifying tower to obtain finished trifluoromethylbenzene; and S3: byproduct hydrogen chloride generated in the fluorination reaction is introduced into a hydrochloric acid tank to obtain hydrochloric acid, and the content of hydrofluoric acid in the hydrochloric acid is less than 1000 ppm. The method can greatly improve the utilization rate of raw material hydrogen fluoride, improve the purity of byproduct hydrochloric acid, reduce the generation amount of waste acid, avoid the sharp change of pressure in the reaction process, and realize large-scale, continuous, stable and safe production of trifluoromethylbenzene.

The invention provides a titanium recovery and all-component recycling cooperative treatment method in sulfate process titanium dioxide waste acid. The method comprises the following steps: diffusion dialysis separation, sulfuric acid concentration, metal separation, titanium component recycling, iron and manganese precipitation and precipitation waste liquid treatment. According to the titanium recovery and all-component recycling co-processing method in the sulfate process titanium dioxide waste acid, most free sulfuric acid and impurity ions in the sulfate process titanium dioxide waste acid are removed firstly through the core steps of diffusion dialysis and extraction and / or adsorption, so that a subsequent extraction / adsorption system is converted into a low-acid and low-impurity environment from a high-acid and high-impurity environment, and the titanium recovery and all-component recycling co-processing method in the sulfate process titanium dioxide waste acid is realized. According to the method, the recovery rate of titanium is increased from less than 1% to more than 80%, the efficient recovery of titanium is realized, the recovery of sulfuric acid is realized, high-purity ferric hydroxide and manganese hydroxide products (the recovery rates are both greater than 70%) are produced, and the efficient recycling of waste acid is really realized.

The present invention addresses to a method of removing scale from the DHSV of the oil production string aiming at maintaining the production of the wells and thus avoiding the loss of production. First, a neutralizing solution is placed in the service line, before pumping the scale removing solution through the string to act on the DHSV. Next, the acid is pumped into the production string to react with the calcium carbonate scale. After the time for the dissolution of the scale inside the DHSV, the well is opened for production by the service line. The spent acid is mixed with the neutralizing solution inside the service line, reducing its corrosiveness in relation to the service line, contributing to its preservation.

The utility model belongs to an acid mixing tower for recycling waste acid, which comprises a tower body, a spray pipe extending into the top of the tower body, a granular heavy metal adsorbent placing net cage arranged inside the tower body, a manhole arranged on the side wall of the tower body, a liquid outlet hole arranged on the side wall of the lower tower body, a fluorine / chloride ion separation chamber connected outside the liquid outlet hole, and a fluorine / chloride ion separation membrane arranged inside the liquid outlet hole. The stirring pipe is provided with a liquid circulating pipe, the liquid circulating pipe is connected to an external acid-resistant circulating pump, a liquid outlet pipeline of the acid-resistant circulating pump is connected to the side wall of the tower body at the height of the granular heavy metal adsorbent placing net cage and extends into the granular heavy metal adsorbent placing net cage, and the stirring pipe is provided with a plurality of liquid spraying ports which are spirally arranged. The device has the beneficial effects that spraying and granular heavy metal adsorbent are adopted, the contact area of the spraying and granular heavy metal adsorbent is large, and the stirring pipe sprays liquid irregularly for stirring, so that precipitates fall to the bottom of the tower body and are not accumulated on the surface of the adsorbent, and the adsorption effect is improved.

The utility model discloses a split burner type waste acid cracking furnace which comprises a combustion chamber, a feeding pipe is fixedly arranged on the left side of the combustion chamber, two groups of burners are fixedly arranged above the combustion chamber, the lower part of the combustion chamber is connected with a first cracking chamber through a partition plate, and the lower part of the first cracking chamber is connected with a second cracking chamber through a partition plate. The combustion chamber of the split burner type waste acid cracking furnace forms a suction structure with the connecting pipe under the driving of the fan, and the connecting pipe forms a communicating structure with the first cracking chamber and the second cracking chamber through the concave air inlet pipe, the spraying arm and the spraying head respectively, so that high temperature generated in the combustion chamber can be uniformly introduced into the first cracking chamber and the second cracking chamber; the first cracking chamber of the device and the second cracking chamber form a communicating structure through the through holes in the partition plate, and therefore it is guaranteed that the waste acid processed in the first cracking chamber can enter the second cracking chamber to be subjected to secondary processing.

The invention belongs to the technical field of waste acid treatment, and particularly relates to an efficient concentration process for waste acid in phenylenediamine production. According to the high-efficiency concentration process for the waste acid generated in phenylenediamine production, multi-stage concentration and resource recycling are combined, impurities are removed through pretreatment of the composite adsorbent, and the adsorbent is recycled and regenerated through magnetic separation; according to the invention, waste acid is extracted from 70-75% to 95.5-96% through first-stage vacuum concentration, second-stage vacuum concentration and pot-type three-stage concentration, and the waste acid can be reused in a second-stage nitrification process, so that cyclic utilization is realized, and the consumption of raw materials is reduced. According to the process, pot-type concentrated high-temperature tail gas is used as a first-stage vacuum concentration heat source to recover waste heat, and external energy consumption is reduced; diluted acid water is separated through a pervaporation membrane, recycled water is used for washing, concentrated dilute acid is recycled for pretreatment, closed cycle emission reduction is formed, and the requirements for green, low carbon and circular economy are met. Meanwhile, by means of composite adsorbent magnetic separation, corrosion-resistant material application and an efficient composite membrane technology, the system stability and efficiency are improved, the service life of equipment is prolonged, and the maintenance cost is reduced.

The invention discloses a method for comprehensively recovering valuable elements from waste acid, the waste acid contains copper, nickel and arsenic, the concentration of copper in the waste acid is 25g / l-70g / l, the concentration of arsenic in the waste acid is 5g / l-50g / l, the concentration of nickel in the waste acid is 2g / l-25g / l, and the concentration of acid in the waste acid is 70g / l-220g / l, and the method comprises the steps of evaporative crystallization, membrane dialysis, primary neutralization and secondary neutralization. According to the method, the copper recovery rate is not lower than 98%, the nickel recovery rate is not lower than 90%, and the arsenic recovery rate is not lower than 80%. According to the invention, neutralization is carried out after evaporative crystallization and membrane dialysis, so that the alkali consumption can be reduced by 40-60%, and the treatment cost is reduced.

The invention belongs to the field of preparation of water treatment chemicals, particularly relates to a method for preparing a high-performance polyaluminum chloride water purifying agent through waste acid-polymerization coupling, and aims at solving the problems that a product is unstable, the impurity content is high, and the waste residue amount is large. The method comprises the following steps: performing oxidation impurity removal pretreatment on industrial waste hydrochloric acid; synthesizing a polyaluminum chloride solution in a medium polymerization state aluminum form as a seed crystal by adopting an aluminum source raw material under the condition of controlling proper basicity; mixing the pretreated waste acid with medium-polymerization-state aluminum seed crystals, pumping the mixture into an inorganic ceramic membrane coupling reactor for polymerization reaction, and promoting the hydrolytic polymerization reaction balance of aluminum to move towards the direction of generating high-polymerization-degree aluminum seeds through the separation effect of a ceramic membrane; after the reaction is completed, the solution is purified and separated through a nanofiltration membrane system, the intercepted liquid is the high-performance polyaluminum chloride water purifying agent, and the permeated liquid is a salt solution containing sodium chloride and the like which can be recycled. The method fully utilizes industrial waste acid to prepare polyaluminum chloride, and has obvious environmental protection benefits and application values.

The invention discloses a method suitable for waste acid purification and acidity improvement in the titanium dioxide industry, and belongs to the field of waste acid treatment. The invention aims at solving the problem of sulfuric acid waste caused by simple treatment of waste acid and solving the technical problems caused by precipitation in the sulfuric acid concentration process. The method comprises the following steps: S1, uniformly mixing cyclohexanol hexaphosphate, phosphate and a flocculating agent according to a certain proportion to obtain a purifying agent; s2, pouring the waste acid accounting for 30% of the total volume of the waste acid into the purifying agent, and stirring; s3, pouring the residual waste acid, and stirring; and S4, then carrying out filter pressing. According to the invention, waste of sulfuric acid caused by a neutralization precipitation method is avoided; the content of metal ions in the activated acid is low, and the problems of regular management and cleaning and equipment maintenance caused by precipitation are effectively avoided during evaporation, concentration and recycling.

This invention relates to the field of non-ferrous metal smelting technology and discloses a high-recovery, emission-reducing copper anode mud treatment process with controlled potential. Each step employs a controlled potential method to regulate the metal leaching rate and reduction rate, thereby reducing the loss rate of valuable metals in each step and improving the overall metal recovery rate. A sulfidation process is used to treat the antimony-bismuth removal solution, enriching antimony and bismuth in the form of sulfides. An evaporation crystallization method is used to open most of the copper in the anode mud in the form of crude copper sulfate. While enriching antimony and bismuth, the production of basic copper carbonate is significantly reduced, eliminating the "rotary kiln selenium distillation" and "water leaching copper separation" processes, and reducing system acid expansion caused by the "rotary kiln selenium distillation" process. By using the recycled reduction solution and secondary gold separation solution as acid sources for the antimony-bismuth removal process and the primary gold separation solution, the waste acid reuse rate and valuable element recovery rate can be improved. This effectively reduces the total wastewater discharge, simplifies the process flow, and improves the recovery rate of valuable metals.

This invention discloses a complete process for preparing nitrobenzene using a microchannel reactor, belonging to the field of nitrobenzene synthesis. The complete process includes mixed acid, microchannel nitration reaction, intermediate product cooling and stratification followed by water and alkali washing, crude product distillation, waste acid recovery, and wastewater treatment. Compared with existing nitrobenzene synthesis technologies, this invention has high mass transfer efficiency, significantly shortens the nitration reaction time, greatly improves production efficiency, enhances reaction safety, and simultaneously achieves waste acid recovery and wastewater treatment, ensuring safe, environmentally friendly, and stable production.

The invention relates to the technical field of biomass fuel heat supply, in particular to a biomass fuel heat supply device for waste acid cracking, which comprises a combustion furnace, a combustion chamber is arranged on the combustion furnace, a smoke conveying pipe is fixed at one end of the combustion furnace, and a dust separator is fixed at the other end of the smoke conveying pipe; a dust removal cloth bag mounting plate is fixed on the inner wall of the dust separator; the biomass fuel recycling device has the beneficial effects that dust in smoke is separated, the separated dust falls into the recycling box, and after the recycling box is full, the dust in the recycling box and new biomass fuel can be poured into the combustion chamber together to be combusted again, so that the combustion efficiency of the biomass fuel is improved; meanwhile, the dust is separated from the flue gas and then conveyed to the waste acid cracking device through the flue, so that the scouring of the flue gas to the inner wall of the flue can be reduced, the abrasion is reduced, the service life of the flue is prolonged, the dust can be prevented from being adhered to a heated surface, and the effects of preventing the heat efficiency from being reduced and preventing the flue from being blocked and corroded are achieved.

The invention discloses a titanium dioxide waste acid concentration system and method, and belongs to the technical field of sulfuric acid process titanium dioxide production or similar waste acid concentration. The system comprises a primary concentration and ferrous separation module and a secondary concentration and ferrous separation module. The primary concentration and ferrous separation module realizes primary concentration and solid-liquid separation of waste acid through an evaporation concentration kettle, a flash tank and a primary diaphragm filter press; and the secondary concentration and ferrous separation module is used for carrying out deep concentration and secondary separation on the waste acid through a scraper evaporator and a secondary diaphragm filter press. The system adopts the technologies of ultrasonic descaling, stepped concentration and solid removal, partition temperature control film evaporation and the like, and is matched with a mirror surface level inner wall scraper evaporator and an adjustable rapping device, so that the problem of scaling blockage in the waste acid concentration process is effectively solved. The method can increase the concentration of waste acid to 60% or above, realizes continuous automatic operation, and has the advantages of low equipment investment, low operation cost, environmental friendliness, high resource recovery rate and the like.

The invention relates to the technical field of resourceful treatment of aluminum etching liquid, and particularly discloses a display panel aluminum etching liquid waste acid resourceful treatment process which comprises the following steps: adsorbing display panel aluminum etching liquid waste acid through mesoporous silica, and filtering to obtain three mixed acid liquid; distilling the third mixed acid solution to obtain a dilute phosphoric acid solution and a second mixed acid solution, and concentrating and purifying the dilute phosphoric acid solution to obtain industrial phosphoric acid with the concentration of 85%; and carrying out neutralization reaction on the secondary mixed acid liquor, calcium hydroxide and magnesium oxide to obtain the CMA snow-melting agent. Metal ions in the waste acid can be effectively removed through mesoporous silica adsorption, and the purity of the product is improved.

The invention relates to an acid regeneration method and device, and belongs to the technical field of acid regeneration environmental protection, and the method is characterized by comprising the following steps: S100, a furnace starting stage: igniting and baking a roasting furnace, and after the baking furnace reaches a temperature, carrying out water spraying operation, namely sequentially carrying out water operation, acid regeneration operation and acid waste operation; s110, water operation: spraying water into the roasting furnace; s120, regenerated acid operation, wherein regenerated acid is sprayed into the roasting furnace through a preconcentrator; s130, waste acid operation, wherein waste acid is sprayed into the roasting furnace through a preconcentrator; s200, an operation stage; s300, the furnace is shut down; and S400, carrying out water operation for 2 hours again. The method has the effect of enabling the acid regeneration waste gas to reach the standard.

The invention discloses a titanium white waste acid treatment process, and relates to the technical field of industrial waste regeneration. The titanium white waste acid is subjected to microfiltration and membrane electrolysis treatment, sulfuric acid is separated and recycled under the control of constant pressure and constant current, and residual liquid is subjected to electrodialysis treatment to oxidize ferrous ions into ferric hydroxide precipitates and calcined into ferric oxide; carrying out reduction leaching on the titanium-containing material, hydrolyzing to generate metatitanic acid, and calcining to obtain titanium dioxide; oxidizing the hydrolysate to precipitate vanadate, and calcining to obtain vanadium pentoxide; adjusting the pH value of the filtrate, selectively adsorbing scandium through a biological adsorption column, precipitating and calcining the eluent to obtain scandium oxide, and regenerating and recycling the adsorbent through acid pickling. According to the process, through multi-stage treatment and biological adsorption, resource recycling of sulfuric acid, iron, titanium, vanadium and scandium components in the waste acid is achieved, the process is clean and efficient, secondary pollution of a traditional process is avoided, and a green low-carbon solution is provided for waste acid treatment in the titanium dioxide industry.

This invention discloses a waste acid recovery method based on ion exchange separation technology, belonging to the field of waste acid recovery technology. The method includes the following steps: passing a waste nitric acid solution containing aluminum and chloride ions through a cation exchange resin to adsorb aluminum ions; adding silver nitrate solution to the adsorbed waste liquid to allow silver ions to react with chloride ions to form silver chloride precipitate; filtering out the silver chloride precipitate to obtain a nitric acid solution; removing the silver chloride precipitate, using aluminum foil as a reducing agent, and adding a small amount of hydrochloric acid to reduce the silver chloride to silver powder; washing the reduced silver powder and dissolving it in nitric acid to obtain a silver nitrate solution for recycling. This waste acid recovery method based on ion exchange separation technology solves the problem of excessive total nitrogen in wastewater discharge; it also significantly reduces waste acid treatment costs and improves economic efficiency.

The utility model relates to the technical field of environment-friendly resource recycling, in particular to production equipment for producing a polyferric chloride water purifying agent based on circuit plating waste acid, which comprises a temperature control base, a reaction kettle, a collecting and conveying mechanism mounted on the temperature control base, and a stirring mechanism mounted in the reaction kettle, the collecting and conveying mechanism comprises a waste acid collecting tank; the waste acid collecting tank is communicated with the reaction kettle through a conveying pipe; the stirring mechanism comprises a stirring assembly, the stirring assembly comprises a group of rotating discs, an annular track groove is formed in the upper end part of the reaction kettle, a material mixing plate is mounted on a rotating wheel, and when the material mixing plate needs to be maintained, only a driving motor needs to be stopped, and the rotating wheel is taken out from the annular track groove; and then the side frame and the mixing plate are integrally detached from the rotating wheel, so that the mixing plate can be checked, cleaned, repaired or replaced, the maintenance process is greatly simplified through the design, and the maintenance time and the labor cost are reduced.

The utility model discloses a ceramic membrane filter for lead-acid battery waste acid treatment, which relates to the field of waste acid recovery and comprises a filter main body, the filter main body comprises a filter bin, a filter mechanism is arranged in the filter bin and comprises a tubular ceramic membrane, a lower supporting tube is fixed at the lower end of the tubular ceramic membrane, and an indicating mechanism is arranged below the filter mechanism. A driving mechanism is arranged below the filtering bin and used for driving the tubular ceramic membrane to rotate, the indicating mechanism comprises a rotating pipe, a prism pipe is fixed to the top of the rotating pipe and slidably connected with a lower supporting pipe, a spring is fixed between the lower supporting pipe and the rotating pipe, and the lower end of the lower supporting pipe is rotationally connected with an indicating rod. The device has the beneficial effects that through the arrangement of the indicating mechanism, the weight of the tubular ceramic membrane is inevitably increased in the accumulation process of objects which cannot be filtered in the tubular ceramic membrane, the tubular ceramic membrane is additionally arranged to drive the indicating rod to move, and a worker can judge whether the tubular ceramic membrane needs to be cleaned or not according to the position of the indicating rod.

A device for cleaning a waste acid container in a non-contact mode comprises a base and a base, the base and the base are connected through a support, the base is of an inclined platform structure, a cleaning opening and a liquid collecting opening are formed in the base in a penetrating mode and located at the two ends of the base respectively, the position of the cleaning opening is higher than that of the liquid collecting opening, and a water pipe is arranged at the water inlet end of the cleaning opening. The foot valve and the water inlet end of the water pipe are fixedly connected with the base. The mode that the water pipe made of the PVC material is connected with the cleaning opening in a hot melting mode is designed, and the interior of the waste liquid container is flushed in a direct-current water inserting type flushing and centralized collecting mode; a foot valve is designed, that is, two hands are completely released in a pedal mode, the efficiency is further improved in a hand and foot matching mode, unnecessary water resource loss is reduced, and then the labor intensity is reduced; the base adopts a cast iron plate with the thickness of 5mm and the surface is subjected to anti-rust treatment, so that the whole device is stable, the gravity center moves downwards and toppling is prevented.

A kind of waste acid regeneration process process gas washing device includes power wave scrubber, spray washing circulating pump and high tank, wherein: power wave scrubber includes washing pipe and tank body, washing pipe is connected with tank body;Washing pipe upper end is equipped with air inlet and liquid inlet;Washing pipe is equipped with reverse spray port inside;Tank body top is equipped with air outlet;Tank body upper portion is equipped with coalescing internal part;Tank body middle upper portion is equipped with spray system;Tank body bottom is equipped with water outlet;Tank body water outlet is connected with spray washing circulating pump, the outlet of spray washing circulating pump is connected with high tank, reverse spray port and spray system respectively, high tank is connected with liquid inlet.The washing device of the application maximizes to improve washing efficiency, recycling washing liquid, and protects device from high temperature process gas damage, can more economically, efficiently handle waste acid regeneration process process gas.

The application discloses a gas-liquid reinforced type sulfuration reaction equipment, which comprises a reaction kettle body, at least one gas-liquid mixer is inserted into the reaction kettle body at the top of the reaction kettle body, and a liquid discharge pipe for discharging liquid after sulfuration is arranged at the bottom of the reaction kettle body; the gas-liquid mixer comprises a liquid inlet section at the top of the reaction kettle body and a diffusion section in the reaction kettle body, a vacuum chamber is arranged between the liquid inlet section and the diffusion section, and a reduced diameter section is inserted into the vacuum chamber at one end of the liquid inlet section close to the vacuum chamber. According to the application, the existing liquid alkali pipeline of the system is integrated into the waste acid circulating pipeline and the hydrogen sulfide gas supply pipeline, an electric control valve is installed, the waste acid circulating pipeline and the hydrogen sulfide gas supply pipeline are regularly washed by alkali liquid, and the scale is dissolved by reaction, so that the scale in the hydrogen sulfide inlet pipeline can be removed without disassembling the equipment and the pipeline.