21 results about "Hydrochloric Acid Liquid" patented technology

The invention provides a method for producing 4, 4 '-dichlorodiphenyl sulfone by continuous reaction of a microchannel reactor, which comprises the following steps: uniformly mixing thionyl chloride and aluminum chloride to obtain a solution A; uniformly mixing hydrogen peroxide and glacial acetic acid to obtain a solution B; a first feeding pump and a second feeding pump are adopted for conveying chlorobenzene and a solution A into a first silicon carbide micro-channel reactor for reaction, an outlet of the reactor is connected with a gas-liquid separator, through separation, a gas phase is used for preparing a byproduct hydrochloric acid, and a liquid phase is a chlorobenzene solution of 4, 4 '-dichlorodiphenyl sulfoxide; and continuously conveying the chlorobenzene solution of 4, 4 '-dichlorodiphenyl sulfoxide to the second silicon carbide microchannel reactor by adopting a third feeding pump, and meanwhile, conveying the solution B to the second silicon carbide microchannel reactor by adopting a fourth feeding pump for reaction to prepare 4, 4'-dichlorodiphenyl sulfone. Compared with the prior art, the micro-channel reactor is used for continuous production, the mass and heat transfer effect is good, impurity generation is effectively inhibited, and the reaction time is shortened.

The invention belongs to the technical field of measurement of liquid absorption amount of conductive carbon black, and relates to a method for measuring liquid absorption amount of conductive carbon black, which comprises the following steps: (1) drying and cooling a carbon black powder sample; (2) soaking a cloth bag with hydrochloric acid, centrifuging and weighing; (3) weighing a dry sample, bagging and tying; (4) soaking the cloth bag in hydrochloric acid, centrifuging and weighing; and (5) re-centrifuging the cloth bag, then weighing until the mass difference between the two times is less than 0.01 g, and calculating the liquid absorption amount of the carbon black. According to the test method, the precision and the accuracy of the hydrochloric acid liquid absorption amount measurement result can be improved, the volume reading error can be avoided, the liquid loss in the use of the injector is reduced, and the result deviation is reduced; personal injury caused by damage of the glass injector can be reduced; instrument damage or operator injury possibly caused by using the weight can be avoided. A plurality of samples can be measured at the same time, and the next sample can be measured after one sample is completed according to an injector extrusion method, so that the test efficiency is improved.

The invention relates to the technical field of hydrochloric acid pickling waste liquid recovery treatment, and particularly discloses a production method and device for recycling hydrochloric acid pickling waste water, and the production method comprises the steps of purification and impurity removal, filter pressing to remove tailings, neutralization reaction, iron red filtration, refining electrolysis to separate acid and alkali and the like. According to the production method, full-quantization high-value recovery of the hydrochloric acid pickling wastewater is achieved, remarkable economic, environmental and industrial application values are achieved, regenerated hydrochloric acid and liquid caustic soda can be directly recycled, closed-loop utilization of resources is achieved, meanwhile, a high-temperature roasting process is abandoned, energy consumption of each ton of waste liquid is reduced, purchased chemicals are reduced, and the production method is suitable for large-scale production of enterprises. The manganese ion removal rate is greater than or equal to 99% through graded impurity removal, and the product purity is high; and only a small amount of hazardous waste tailings are generated, secondary pollution is avoided, the triple targets of wastewater treatment, resource recovery and economic benefits are achieved, and technical support is provided for sustainable development of enterprises.

The invention discloses a combustion flue gas waste heat recovery device, and relates to the technical field of waste heat recovery devices.The combustion flue gas waste heat recovery device comprises a lower frame body, a discharge hole is formed in the top end of the outer wall of one side of the lower frame body, an upper frame body is fixed to the upper portion of the lower frame body, and a detachable cover body is arranged at the top end of the upper frame body; a waste heat recovery pipe which penetrates through the upper frame body and extends into an inner cavity of the lower frame body is arranged at the top end of the cover body, sweeping assemblies arranged in the inner cavity of the upper frame body are installed at the two ends of the upper surface of the cover body, and acid liquid injection assemblies extending into the inner cavity of the upper frame body are installed on the outer walls of the two sides of the upper frame body. Wherein scale on the outer wall of the waste heat recovery pipe is scrubbed through the sweeping assembly, and the scale on the outer wall of the waste heat recovery pipe is removed through the acid liquid injection assembly. When waste heat of combustion flue gas is recycled, a proper amount of diluted hydrochloric acid liquid is injected into the inner cavity of the upper frame body through the acid liquid injection assembly, and scale on the outer wall of the waste heat recycling pipe is scrubbed through the sweeping assembly.

The invention discloses a polycrystalline silicon waste treatment device, relates to the technical field of polycrystalline silicon production, and mainly aims to reduce the treatment cost of fluorine-containing waste water of polycrystalline silicon. According to the main technical scheme, the polycrystalline silicon waste treatment device comprises a wastewater treatment tank, a polycrystalline silicon waste gas treatment part and a salt-containing wastewater treatment part, the wastewater treatment tank is respectively connected to a fluorine-containing wastewater pipe and a hydrochloric acid liquid supplementing pipe; the polycrystalline silicon waste gas treatment part is used for leaching chlorosilane gas to form salt-containing waste water; the salt-containing wastewater treatment part comprises a first-stage reaction tank, a first-stage inclined plate settler and a first-stage overflow tank which are connected in sequence, the first-stage reaction tank is used for receiving the salt-containing wastewater, the top wall of the first-stage reaction tank is connected to a first feeding hopper and used for feeding calcium hydroxide, and the top wall of the second-stage reaction tank is connected to a second feeding hopper; and a slag discharge pipe of the primary inclined plate settler is connected to the wastewater treatment tank.

The utility model discloses a gas-liquid separation device capable of realizing tail gas recovery, and relates to the technical field of tail gas recovery, the gas-liquid separation device comprises a separation tank and a tail gas filtering assembly, the inner side of the separation tank is fixedly provided with a partition plate, and the partition plate is used for dividing the separation tank into a separation spraying chamber and an exhaust chamber; the tail gas filtering assembly is used for realizing hydrochloric acid separation operation of hydrochloric acid-containing tail gas; a liquid discharging assembly extending into the spraying chamber is further arranged on the other side of the separating tank, and the liquid discharging assembly is used for discharging the separated hydrochloric acid liquid and circularly spraying the hydrochloric acid liquid. By arranging the separating tank and the tail gas filtering assembly, separation of hydrochloric acid-containing condensed liquid in tail gas can be achieved, the alkali consumption of the alkali spraying tower is reduced, the salt water amount of sewage treatment is reduced, meanwhile, the hydrochloric acid-containing condensed liquid is circularly sprayed through the liquid preparing assembly, the water consumption of sewage treatment is reduced, and the water quality is improved. And the concentration of the hydrochloric acid-containing condensed liquid can be further improved, so that subsequent recycling is facilitated.

The invention relates to the technical field of hydrochloric acid purification, in particular to a hydrochloric acid purification device which comprises a bottom plate, a hollow base, a distillation bin and a pure water bin, a butt-joint plate is movably arranged in the distillation bin, two connecting bins are arranged on the butt-joint plate and located at the two ends of the butt-joint plate respectively, stirring blades are installed on the connecting bins, and the stirring blades are arranged on the hollow base. Stirring blades are arranged in the distillation bin, turbulent flow holes are formed in the stirring blades, and a splashing suppression unit connected with the stirring blades is arranged in the distillation bin and used for driving the stirring blades to rotate to mix liquid and eliminate temperature gradient when hydrochloric acid liquid is heated. When hydrochloric acid liquid starts to be heated, the stirring blades are driven to rotate so as to mix the liquid and eliminate the temperature gradient, the hydrochloric acid liquid can be fully mixed in the heating process by driving the stirring blades to rotate, the temperature uniformity of the whole liquid system is ensured, and the stirring effect is beneficial to breaking temperature stratification in the liquid and reducing the temperature gradient.

The utility model discloses a household garbage leachate microfiltration device which comprises a microfiltration membrane assembly, the microfiltration membrane assembly is used for filtering leachate, the microfiltration membrane assembly is further connected with a storage tank assembly, a backwashing assembly and an acid pickling assembly, the storage tank assembly is used for storing crystal substances, and the backwashing assembly is connected with the acid pickling assembly; by the adoption of the method, the functions of normal water production, crystallization accumulated sludge discharge, backwashing dredging, chemical cleaning and the like are integrated, the production function integration characteristic is achieved, operation is easy and convenient, efficient interception is conducted through the microfiltration membrane assembly, the production efficiency is improved, and the production cost is reduced. The problem that crystals cannot be efficiently removed independently by means of precipitation and other measures is avoided, the standing time and the occupied area are reduced, the microfiltration membrane assembly is convenient to discharge sludge, rapid sludge discharge and rapid production can be achieved according to the combined action of gravity and air pressure, meanwhile, cleaning and overhauling are convenient, hydrochloric acid liquid can be recycled, the use amount of cleaning acid liquid is reduced, and the cost is reduced. And the use cost is lower.

The application relates to the field of hydrochloric acid purification technology, in particular to a hydrochloric acid purification device, which comprises a bottom plate, a hollow base, a distillation bin and a pure water bin. A butt joint plate is movably arranged in the distillation bin. Two connecting bins are arranged on the butt joint plate and located at the two ends of the butt joint plate. Stirring blades are arranged on the connecting bins, and turbulence holes are arranged on the stirring blades. A splashing suppression unit connected with the stirring blades is arranged in the distillation bin, which is used for driving the stirring blades to rotate to mix the liquid and eliminate the temperature gradient when the hydrochloric acid liquid is heated. When the hydrochloric acid liquid is heated, the stirring blades are driven to rotate to mix the liquid and eliminate the temperature gradient. The hydrochloric acid liquid can be fully mixed in the heating process by driving the stirring blades to rotate, the temperature uniformity of the whole liquid system is ensured, and the stirring action helps to break the temperature stratification in the liquid and reduce the temperature gradient.

This invention discloses a method for recovering germanium from high-purity germanium Hall effect wafers, belonging to the field of semiconductor waste recycling technology. The method includes: S1 Blade scraping: scraping off the indium from the four electrodes of the Hall effect wafer with a blade; S2 Ultrasonic treatment: ultrasonic cleaning with organic solvent to remove oil, followed by nitrogen drying; S3 Heating to melt indium: heating to 157-200℃ to melt indium; S4 Cleanroom wiping: wiping away the surface indium melt with a cleanroom cloth soaked in isopropanol; S5 Nitric acid etching: etching with 10-15% dilute nitric acid for 1-3 minutes, with magnetic stirring throughout; S6 Hydrochloric acid etching: etching with 10-15% dilute hydrochloric acid for 2-5 minutes, with magnetic stirring throughout; S7 Zone melting. This invention combines physical scraping, heating and melting wiping, and two-step dilute acid selective etching with magnetic stirring, enabling efficient removal of surface indium electrodes without damaging the original morphology of the germanium wafer, greatly improving the germanium recovery rate.

The present invention discloses a device for absorbing trichlorosilane tail gas, comprising a liquid heating storage box, a third gas supply pipe, and a control box. A serpentine air intake pipe is wound inside the liquid heating storage box, and one end of the serpentine air intake pipe is connected to a first exhaust pipe. A stirring and self-cleaning assembly is fixed to the liquid heating storage box, a gas pressurizing mechanism is fixed to the first exhaust pipe, one end of the third gas supply pipe is connected to a first exhaust treatment assembly, one end of the fourth gas supply pipe is connected to a toxic gas treatment assembly, and the first exhaust treatment assembly is connected to a hydrochloric acid liquid storage tank via a drain pipe. The device for absorbing trichlorosilane tail gas has the advantages of pre-heating trichlorosilane tail gas, stirring the liquid heating storage box, pre-treating trichlorosilane tail gas, collecting and using distilled water generated during pre-treatment, and further treating harmful gases in trichlorosilane tail gas.

The utility model discloses a device for removing residual acid and a catalyst in isooctyl thioglycolate, and belongs to the technical field of purification and treatment of isooctyl thioglycolate. Comprising a mixing assembly, a reaction assembly, a settling tower and an acidification kettle which are sequentially connected, the mixing assembly is provided with an isooctyl thioglycolate feed port and a dilute alkali feed port, a feed port of the reaction assembly is communicated with a middle liquid inlet of the settling tower, and the upper portion and the lower portion of the settling tower are each provided with a filler layer. The top of the settling tower is provided with a settling tower upper liquid outlet, the bottom of the settling tower is provided with a settling tower lower liquid outlet, the settling tower lower liquid outlet is communicated with the liquid inlet of the acidification kettle, and the settling tower is provided with a hydrochloric acid liquid inlet. The waste of raw materials is reduced, and meanwhile, the problem that the waste liquid treatment cost and difficulty are increased due to the fact that the organic matter content in the waste liquid is too high is avoided; a continuous treatment mode is adopted, automation is achieved, the treatment efficiency is high, and tedious manual operation is avoided.

The invention relates to the field of acetylene gas refining, and particularly discloses a low-pollution acetylene purification and ammonia removal treatment process and a low-pollution acetylene purification and ammonia removal treatment system. The process comprises the following steps: introducing crude acetylene gas into a hydrochloric acid solution to obtain first crude acetylene gas and a first absorption solution; alkali liquor is introduced into the first crude acetylene gas, second absorption liquid and refined acetylene gas are obtained, and the pH of the second absorption liquid is kept within the range of 8-8.5; mixing the first absorption liquid with the second absorption liquid for reaction, adjusting the pH value to 10.5-13 after the reaction is finished, and carrying out ammonia gas elution treatment to obtain third absorption liquid and tail gas containing ammonia gas; recycling the third absorption liquid and using the third absorption liquid as raw material water for producing crude acetylene gas; and the tail gas is incinerated, decomposed and discharged. Through cooperative treatment of hydrochloric acid absorption, alkali liquor analysis, gas deamination and high-temperature incineration, efficient removal of H2S, NH3 and CH3CHO is achieved, the problems that in an existing process, the wastewater discharge amount is large, the treatment cost is high, and impurities are not thoroughly removed are solved, and low pollution and even zero discharge are achieved.

The invention discloses an electric drive membrane technology for concentrated seawater carbon sequestration. A device comprises a carbon dioxide input pipeline, an alkali liquor storage area, a concentrated seawater storage area, a hydrochloric acid liquid storage area, a sulfuric acid liquid storage area, a polar liquid storage area and an electric drive membrane technology membrane stack. The method comprises the following steps: (1) respectively and independently preparing alkali liquor, concentrated seawater, hydrochloric acid liquor, sulfuric acid liquor and polar liquor; (2) the alkali liquid, the concentrated seawater, the hydrochloric acid liquid, the sulfuric acid liquid and the polar liquid are independently and circularly operated; and (3) after the alkali liquor, the concentrated seawater, the hydrochloric acid liquor, the sulfuric acid liquor and the polar liquor in the step (2) begin to circulate, introducing carbon dioxide into the alkali liquor, then turning on a power supply, electrifying and carrying out an electrically-driven membrane technology, and when dissolution and absorption of the carbon dioxide in the alkali liquor reach balance, turning off the power supply, stopping electrifying and ending the electrically-driven membrane technology process. Sodium and carbon dioxide in seawater are utilized, the concentration of the obtained sodium bicarbonate solution is larger than or equal to 800 mmol / L, the carbon sequestration rate is larger than or equal to 30%, and the green and environment-friendly requirements are met.

The invention relates to the field of environment-friendly equipment, in particular to an environment-friendly hydrochloric acid storage tank acid mist absorption device which comprises a fixed frame, a moving assembly, a moving frame and the like. A moving assembly is arranged on the fixing frame; the moving assembly is connected with a moving frame. The moving assembly is used for driving the moving frame to lift. In the process of conveying hydrochloric acid to the acid storage tank, the feeding port is blocked through the moving frame, acid mist in the acid storage tank is prevented from escaping to the outside, so that surrounding metal facilities are prevented from being corroded, the safety of hydrochloric acid discharging is improved, secondly, the bottom of the discharging pipe is always located below the hydrochloric acid liquid level, hydrochloric acid can be prevented from sputtering due to high-fall falling, and the safety of hydrochloric acid discharging is improved. Meanwhile, due to the fact that the concentration of the acid mist near the hydrochloric acid liquid level is the highest, and the air suction holes are close to the hydrochloric acid liquid level all the time, it can be guaranteed that the acid mist with the high concentration is sucked into the liquid storage cavity, and then the acid mist absorption efficiency is improved.

The present invention relates to the technical field of pipe joints, and discloses a corrosion-resistant pipe joint for electronic-grade hydrochloric acid analysis, comprising a joint pipe, wherein the upper and lower ends of the joint pipe are respectively provided with an inlet and an outlet; a telescopic connecting component for staggered flow connection of hydrochloric acid liquid; a pressure self-flushing mechanism for self-flushing the joint pipe; the telescopic connecting component comprises an upper contraction pipe, and the upper contraction pipe is slidably connected to the inner wall of the joint pipe. The corrosion-resistant pipe joint for electronic-grade hydrochloric acid analysis, through the telescopic connecting component, can utilize the squeezing force of the fluid to drive the relative movement of the upper contraction pipe and the lower contraction pipe when sulfuric acid is connected in the pipeline, thereby forming a fluid channel for hydrochloric acid. When the hydrochloric acid fluid pressure disappears, the upper contraction pipe and the lower contraction pipe can automatically clean the acidic liquid attached to the pipe wall in the reset state, thereby reducing pipeline corrosion caused by the adhesion of hydrochloric acid and improving the overall service life of the joint.

The utility model discloses an experimental device for simulating electrolytic cleaning of a cold-rolled sheet, which comprises an experimental box, a cleaning container is mounted in the experimental box, a fixture block is mounted at the bottom in the cleaning container, a first storage groove is formed in the fixture block, and the first storage groove is shaped like a Chinese character'mi '. A clamping piece used for limiting the position of the cold-rolled sheet is arranged on the inner wall of the cleaning container, and a heating piece is installed at the bottom of the cleaning container. According to the experimental device for simulating electrolytic cleaning of the cold-rolled sheet, the first storage groove formed in the clamping block in a shape like a Chinese character'mi 'facilitates clamping of the inclined cold-rolled sheet, so that the surface of the cold-rolled sheet is electrolyzed, the friction problem caused by rotation of the cold-rolled sheet for treatment is reduced, and the overall service life is prolonged; the treatment cost and the environment burden are reduced through electrolysis operation, the uniform cleaning effect can be guaranteed through uniform current distribution, and the problem that treatment is not thorough due to the fact that hydrochloric acid liquid is used for treatment is solved.

The invention relates to a preparation process of electronic grade hydrochloric acid, which comprises the following steps: inputting hydrochloric acid mother liquor in a raw material tank into an evaporator, and evaporating the hydrochloric acid mother liquor into a vapor phase in the evaporator; condensing and cooling the vapor phase through a condenser to obtain hydrochloric acid liquid; the hydrochloric acid liquid passes through a demister, and residual water vapor flowing together with the hydrochloric acid liquid is removed; and the hydrochloric acid liquid and gas passing through the demister are input into an absorption tower together to absorb residual hydrochloric acid in the hydrochloric acid liquid and gas, and electronic-grade hydrochloric acid is obtained. According to the preparation technology of the electronic grade hydrochloric acid, the hydrochloric acid mother liquor can be purified through the steps of evaporation, condensation, demisting, reabsorption and the like, and the high-purity electronic grade hydrochloric acid solution is prepared. By combining the pressure adjusting device and the demisting efficiency adjusting device, the steam rising rate at the bottom of the tank body and the demisting efficiency of the demister can be adjusted.

A positive electrode composition contains carbon black, a carbon nanotube, a binding material, and an active material. The carbon black has a hydrochloric acid liquid absorption amount of 30 mL / 5 g or more. The carbon nanotube has an average diameter of 5 to 15 nm.

The utility model belongs to the technical field of hydrochloric acid, and particularly relates to a condensed hydrochloric acid recovery treatment device which comprises a treatment tank, a liquid outlet pipe is fixedly connected to the bottom of the treatment tank, and a partition plate is fixedly connected to the interior of the treatment tank; the top of the treatment tank is fixedly connected with a gas inlet pipe through a condensation mechanism, a pretreatment mechanism is arranged in the middle of the gas inlet pipe, and a collection box is fixedly mounted at the bottom of the pretreatment mechanism; wherein the pretreatment mechanism comprises a shell, a rotating shaft, a filter plate and an anti-blocking assembly, a supporting column is fixedly mounted in the shell, and turbine blades are fixedly connected to the exterior of the rotating shaft; the anti-blocking assembly comprises a cleaning brush roller and a baffle, one side of the cleaning brush roller abuts against a spring, and the baffle is fixedly installed on the surface of the rotating shaft. According to the utility model, the pretreatment mechanism is arranged between the condensation mechanism and the gas inlet pipe, so that the waste gas can be firstly filtered, and the recycled hydrochloric acid liquid does not contain impurities and can be treated and used again subsequently.

The application discloses a synthesis method of O-3-chloro-2-propenyl hydroxylamine, which comprises the following steps: directly reacting compound B with water under the action of a catalyst to obtain O-3-chloro-2-propenyl hydroxylamine; and the catalyst is Amberlyst-15 resin. According to the application, O-3-chloro-2-propenyl hydroxylamine can be prepared from compound B in one step by selecting a special catalyst, the operation is simple, the selectivity of the catalyst is high, the side reaction is less, the reaction process is easy to control, and the participation of hydrochloric acid and liquid alkali is not needed in the reaction process, so that waste salt and waste water such as sodium chloride and sodium acetate are not generated, the environmental protection pressure is reduced, and the application is a green route with wide prospects.