35results about How to "Reduce fouling and clogging" patented technology

The invention discloses a flue gas desulfurization synergist which comprises the following components in percent by weight: 30-80 percent of adipic acid or glutaric acid, 5-30 percent of one of sodium chloride, sodium sulfate, and magnesium sulfate, and 1-50 percent of dioctyl sulfosuccinate sodium salt. A using method of the flue gas desulfurization synergist is characterized by comprising the steps of: firstly, preparing lime into limestone slurry of 50-300PPm, adding 300-1000mg/L of gas desulfurization synergist in the limestone slurry, mechanically stirring uniformly, and then pumping the limestone slurry added with the gas desulfurization synergist into a desulfuration reaction tower by using a limestone slurry pump. By using the gas desulfuration synergist, the desulfuration efficiency is improved by 5-15 percent, the consumption of limestone is reduced, the scale formation and the blockage of equipment are reduced, and the operation electric energy is saved.

The invention relates to a compound additive for limestone-gypsum wet-process flue gas desulfurization. The compound additive is prepared from the following components in percentage by mass: 25 percent to 50 percent of a limestone dissolving promoter, 20 percent to 60 percent of a pH (Potential of Hydrogen) buffering agent, 5 percent to 15 percent of a surfactant, 3 percent to 10 percent of an oxidization catalyst, 2 percent to 5 percent of a de-foaming agent and 2 percent to 10 percent of a correlated auxiliary agent. The compound additive provided by the invention combines the dual advantages of an inorganic additive and an organic additive of rapid effect, less use amount, long lasting time, less consumption and the like in a limestone-gypsum wet-process flue gas desulfurization system of a thermal power plant; the formula is simple and components have a low price and are easy to obtain; on the basis of not doing any engineering reconstruction, the absorption efficiency of SO2 can be greatly improved, the quality of gypsum can also be improved and the scaling and blocking of the system are reduced.

The invention discloses a combined rainwater seepage well and a construction method, belongs to the field of drainage projects, and particularly relates to a structure for discarding initial rainwater, adjusting the rainwater and supplying underground water by seeped rainwater. The combined rainwater seepage well mainly comprises a shaft, a pipe and a well body, wherein the shaft is positioned on the lower portion of the well body; and the pipe is connected with the well body. Seepage wells are arranged on a rainwater pipe at intervals of 1-3 inspection wells, rainwater is collected through the pipe during raining and seeps into the ground through the seepage well, the flow of the rainwater is reduced at the source, an effect of shifting peaks and adjusting storage is achieved, and waterlogging caused by accumulated water on the ground is reduced. The shaft is filled with filter materials, a slime pit is arranged on the bottom of the well body, a filter screen is arranged on the bottom of the slime pit, and the rainwater is filtered by the filter materials, seeps into the ground and supplements the underground water. The seepage well is constructed in a combined mode, the well body on the upper portion of the seepage well is constructed by using a down-top method, different sections of the shaft on the lower portion of the seepage well are constructed one by one by using a top-down method, and the construction difficulty and the manufacturing cost are greatly reduced.

The invention discloses a method for treating ash deposition and scaling of a GGH (gas-gas heater). The method for treating ash deposition and scaling of the GGH has the advantages that the steps of blowing ash online by compressed air, flushing online by high-pressure water, flushing by low-pressure water before halting and performing high-pressure flushing by chemical cleaners after halting are adopted, so that the problems of severe ash deposition and scaling of a heated surface of the GGH due to ash deposition, acid coagulation, liquid drop adhesion and the like are solved, blockage resulting from ash deposition and scaling of the GGH is slowed down substantially, normal operation and flue gas desulfurization effect of a desulfurization system are guaranteed, halting times of the desulfurization system are decreased, and safety operation and safety economy of a unit are guaranteed under a rated condition.

The invention relates to a process for desulphurizing flue gas and producing high-concentration sulfur dioxide by a sodium-zinc method, which can be widely used in the technical fields of chemical industry, electric power, construction materials, metallurgy and the like. In the invention, a sodium sulfite solution is used for absorbing sulfur dioxide in the flue gas, zinc oxide is used for realizing the concentration and the purification of the sulfur dioxide, and a thermal decomposition method is used to obtain the sulfur dioxide product. The invention avoids the problem that calcium sulfate produced by calcium-method desulphurization is difficult to use, solves the problem on scaling in zinc-method desulphurization, and effectively saves the flue gas desulphurization cost, thereby having good application prospects.

The invention discloses a coal-fired flue gas desulfurization, denitrification and foam inhibition catalytic synergist and a use method thereof. The catalytic synergist comprises the following raw materials in percentage by mass: 10-80% of a cosolvent; 5-40% of an oxidation catalyst; 5-30% of a co-activator; 1-10% of a scale and foam inhibitor; 1-10% of a co-dispersant; and 0.1-2% of an analysis regulator. With the coal-fired flue gas desulfurization, denitrification and foam inhibition catalytic synergist is adopted, desulfurization and denitrification efficiency can be improved; the semi-ablation time of limestone is reduced; the dissolution speed of the limestone is obviously accelerated; the activity of limestone can be greatly improved; the fluctuation of the PH value of slurry is mitigated; the liquid-gas ratio L/G of a system is reduced; the resistance of a spraying layer is reduced; the utilization efficiency of oxidation air is improved; the consumption of a booster fan is reduced; the Ca/L ratio of the system is reduced; the consumption of the limestone is reduced; the dispersity of the limestone is improved; calcium sulfite oxidation is promoted; scaling blockage and foaming of a desulfurization system are reduced; and the reliability of the desulfurization system is improved.

The present invention is one kind of vertical sieve plate and its application in the separation system of ethyl acetate esterification, and aims at solving the problems of common sieve plate, which has low mass transfer efficiency, low mass transfer space utilization, easy jamming of meshes, exceed resistance, hard control in acidity of top ethyl acetate product and less operation elasticity. The vertical sieve plate is used in the separation system of ethyl acetate esterification, and the separation system includes esterifying tower, top condensator, ester-water separator and reactor. The vertical sieve plate features the calotte in special shape, the airlift hole of venturi form in the column plate, several rows of small holes on the side wall of calotte, and the optimal designed of the column plate and calotte structure based on the push force mathematic mold. The metal column plate is vertical sieve plate or the combination of common sieve plate and vertical sieve plate.

The invention discloses a desulfurization synergist suitable for wet desulfurization. According to the mass percentage, the raw materials include: 40%-60% of organic synergistic components, 20%-40% of inorganic synergistic components, surfactants 5%-10%, disperse components 5%-10%. The invention is simple to manufacture, does not need heating, is convenient to use, uses less, and is low in cost. The gas ratio can be reduced by 10-20%, and a slurry circulation pump is shut down, and the outlet SO ₂ It complies with the emission standard of air pollutants for thermal power plants GB13223-2011.

The invention discloses a water-saving clean drinking machine and a concentrated water control method thereof. The water-saving clean drinking machine comprises a water making system and a control system. The water making system comprises a raw water tank, a water pump, a front filter element system and a reverse osmosis membrane filter element which are communicated in sequence. A clean water outlet of the reverse osmosis membrane filter element is communicated with the clean water tank, and a concentrated water outlet of the reverse osmosis membrane filter element is communicated with a concentrated water discharging system. The concentrated water discharging system comprises a wastewater ratio solenoid valve, a water discharging valve and a throttling valve. The wastewater ratio solenoid valve and the throttling valve are communicated with the concentrated water outlet, the water discharging valve is communicated with the wastewater ratio solenoid valve, and the throttling valve is communicated with a water path in front of the water pump. The ratio of the flow of concentrated water generated by the reverse osmosis membrane filter element to the flow of clean water is lager than 2, and the total amount of concentrated water generated by the reverse osmosis membrane filter element is proportionally distributed. According to the water-saving clean drinking machine and the concentrated water control method thereof, the distribution proportion of concentrated water produced by a reverse osmosis system can be regulated and controlled, it is avoided that overlarge working pressure is increased for the system, the situations of scaling blockage and the like of a reverse osmosis membrane and a filter system are relieved, and the service life of the reverse osmosis membrane is guaranteed while concentrated water is recycled.

The invention provides a treatment system for zero discharge of comprehensive electroplating wastewater and a treatment process thereof. The invention belongs to the technical field of sewage treatment, and relates to a zero-discharge treatment system for comprehensive electroplating wastewater. Comprising a physicochemical system, a biochemical system, a membrane concentration system, a special pretreatment system and an evaporation system which are connected in sequence. According to the invention, the high-salt concentrated water subjected to membrane concentration can be treated by the pretreatment system before entering the evaporation system, so that pollutants influencing evaporation in the high-salt concentrated water are removed, the viscosity of the concentrated water is reduced, the evaporation and crystallinity of the concentrated water are improved, and the concentrated water enters the evaporation crystallization system to obtain a byproduct salt; the evaporated and crystallized mother liquor is returned to the pretreatment system to be mixed with the membrane concentration high-salt concentrated water for circular treatment, pollutants enriched in the mother liquor are removed, and the mother liquor can be continuously evaporated and desalted, so that zero mother liquor of the evaporation system is realized, and zero emission of the electroplating comprehensive wastewater is realized.

The invention relates to a flat sheet membrane bioreactor which comprises an anaerobic pool, an aerobic pool and a membrane component which are sequentially connected, a water inlet is formed in the anaerobic pool, a stirring shaft is vertically arranged in the anaerobic pool, a plurality of stirring paddles are arranged on the stirring shaft at intervals, the lower end of the stirring shaft extends to the bottom part of the anaerobic pool, a plurality of sections of spiral channels are arranged on the inner wall of the anaerobic pool at intervals from top to bottom, each spiral channel is formed by encircling and splicing a plurality of spiral blades fixed on the inner wall of the anaerobic pool, each spiral channel is provided with a penetrating channel for holding the stirring paddle, a filter screen is coated at the periphery of the membrane component, the mesh number of the filter screen is 30-50, the bore diameter of the filter screen is 0.4-0.5mm, and a return passage is arranged between the anaerobic pool and the aerobic pool. The flat sheet membrane bioreactor is simple in structure and high in production rate.

The invention discloses a flow swirling and flow intercepting device. The device comprises a flow swirling valve and a water collecting well. The flow swirling valve is fixedly installed in the watercollecting well, an inlet and an outlet are formed in the water collecting well, an inlet and an outlet are formed in the flow swirling valve, and the outlet of the flow swirling valve is communicatedwith the outlet of the water collecting well; the flow swirling valve is mainly formed by a cylindrical shell body connecting with a truncated cone-shaped shell body, the cylindrical shell body is composed of three fan-shaped cylinders and a square cylinder, and a through slot is formed in the outer surface of the square cylinder as a valve inlet; the water collecting well is of a rectangular structure, the inlet and the outlet are respectively formed in the two symmetrical side walls, the central axes of the inlet and the outlet are overlapped, and the central axis of the outlet of the flowswirling valve is overlapped with the central axes of the inlet and the outlet of the water collecting well. According to the device, an air intercepting cylinder can be formed in the center of the flow swirling and flow intercepting device, the diameter size of the air intercepting cylinder is controlled by water levels, stability of installation of the device is improved, flow intercepting effect is achieved, phenomenons of water seepage, water leakage and water overflow in down stream due to water level difference are reduced, deposit and blocking are slowed down, and flow capacity of a pipe is improved.

The invention relates to the technical field of pipeline desilting, in particular to a silt suction device for municipal pipeline desilting. The silt suction device comprises a bearing assembly, a crushing assembly and a silt suction assembly. The bearing assembly comprises a base and a supporting frame. The crushing assembly comprises a crushing device and a material collecting device. The silt suction assembly comprises a suction pipe and an air bellow. Crushed and cut silt is sucked into the air bellow and discharged through a silt discharging opening in one side of the air bellow, and dueto the crushing and silt suction design, cake and solid waste in the silt can be crushed conveniently, and silt blockage of a pipeline is reduced. By designing an adjustable silt suction head, silt suction at pipeline desilting dead corners is facilitated. By designing silt suction of a box body module, cleaning and maintenance of the interior of the device are facilitated, the risk of equipment silt solidification is reduced, silt suction in the pipeline desilting process is more convenient, and the silt suction effect in the pipeline desilting process is better.

The invention provides a device for cleaning filtering cloth of belt press filter for alcohol mash. The device comprises a roller with two ends for supporting the filtering cloth, a water spraying pipe is arranged on the filtering cloth, a three-way pipe is arranged at each of two ends of the water spraying pipe, and a gate convenient for dredging is mounted on each of the three-way pipes at two ends of the axial direction of the water spraying pipe; a system water incoming pipe is arranged at another through port of a three-way valve, a plurality of water spraying ports are formed in the water spraying pipe at intervals, diameter of each water spraying port is 2mm, and the water spraying pipe is a PVC water pipe. When the gate is opened, a cleaning head of a cleaning rod or cleaning wateris utilized to clean the water spraying pipe. The device has the advantages that one-way feeding of the water spraying pipe is changed into two-way feeding, and feeding direction is changed constantly, so that scaling, blocking and damaging of the water spraying ports of the water spraying pipe are reduced; the water spraying pipe is the PVC water pipe, so that cost can be reduced, and easiness in drilling is realized; by designing the gate, convenience is brought to cleaning, and cleaning can be realized by using the cleaning water or the cleaning head.

The invention discloses an integrated tower backwashing assembly. The integrated tower backwashing assembly is composed of a water inlet pipe (4), a water inlet transverse pipe (5) and a circumferential water spraying pipe (6), wherein small holes are drilled in the lower portion of the circumferential water spraying pipe; and the water inlet pipe, the water inlet transverse pipe and the circumferential water spraying pipe are welded into a whole, the water inlet transverse pipe (5) is welded to a sludge pipe (3), and the circumferential water spraying pipe (6) is welded to a flue inner wall (1). High-pressure water enters the circumferential water spraying pipe from the water inlet pipe A and is sprayed out from the small holes B in the lower portion of the circumferential water spraying pipe, and sludge on a damping pore plate assembly is flushed into the sludge pipe.

The invention discloses a high-efficiency inhibitor for cracking gas alkali washing operation polymerization reaction, the inhibitor contains a synergist, the synergist is gamma-valerolactone, and the addition amount is 0.5-3 wt%. The inhibitor also contains a polymerization inhibitor, an antioxidant, a metal ion passivator, a dispersant and a solvent. The inhibitor comprises the following components in percentage by mass: 1 to 15 percent of polymerization inhibitor and antioxidant, 1 to 25 percent of polymerization inhibitor and solvent, 1 to 20 percent of dispersing agent and polymerization inhibitor, and the mass ratio of synergist to metal ion passivator to dispersing agent to solvent is (0.1 to 3): (1 to 50): (1 to 50): (1 to 100). The high-efficiency inhibitor for the cracking gas alkali washing operation polymerization reaction can effectively inhibit the polymerization reaction of trace carbonyl compounds such as aldehyde, ketone and alcohol, unsaturated olefin and the like in cracking gas in an alkali washing tower, and can dissolve generated butter polymers, so that the generated bulk polymers are dispersed and dissolved in alkali liquor to be discharged, and the polymerization reaction of the cracking gas alkali washing operation is realized. And the scaling blockage of the butter polymer on the packing of the alkaline washing tower is effectively reduced.