1432 results about "Slurry pump" patented technology

A feeding device for an oil field waste treatment system comprises a main pipe and multiple branch pipes, wherein front ends of the branch pipes are all connected with the rear end of the main pipe, and rear ends of the branch pipes are all connected with corresponding heating cavities; a main slurry pump which is a positive displacement pump is mounted on the main pipe; root valves are mounted on all of the branch pipes. The feeding device for the oil field waste treatment system adopts the positive displacement pump for pumping, materials with higher fluidity can be conveyed and distributed, and the feeding quantity can be measured, so that a proper quantity of materials are conveyed into the heating cavities, the materials are completely treated, the heat energy of a burner can be more efficiently utilized, and the treatment efficiency is improved. The materials can be constantly conveyed into the heating cavities quantitatively at a constant speed for a long time through measurement of calibration ports and regulation of branch regulation valves, the continuity of waste treatment work can be higher, and the work efficiency is further improved.

The invention provides a high-efficiency compound regenerative electrical energy device. The device comprises a reactor, an anode chamber, an anode plate, a cathode chamber, a cathode plate, a proton exchange membrane module, a liquid distributor, a gas distributor, a purge distributor, a battery load, an output pump, a circulating pump, a heating/cooling device, a slurry pump, an air blower, a purge gas stop valve, a flow control valve, a magnetic flap liquidometer, a self-operated pressure-regulating valve, and an immersed pump. The gas distributor is disposed at the bottom of the cathode chamber, and the circulating pump is disposed in the middle of the reactor barrel. The air blower communicates with the gas distributor by the self-operated pressure-regulating valve, and the immersed pump is disposed at the bottom of the cathode chamber. The device uses the coupling mode of fuel cell and catalyst reactivation by means of the arrangement of air cathode fuel cell, is beneficial to improve the oxidation regeneration rate of the catalyst, and realizes the rapid regeneration of the complex catalyst.

Integrating a biomass pyrolysis and upgrading process into a fluid catalytic cracking unit. The process uses conventional FCC feed and a mixture of a solvent and biomass to produce upgraded fuel products. A slurry stream composed of solid biomass particles and a solvent is fed into an FCC riser through a slurry pump to achieve biomass pyrolysis and in situ pyrolysis oil upgrading. The catalytic cracking of the conventional petroleum feed also occurs in the riser.

The invention relates to an underground working condition simulation method and a device for a controlled pressure drilling experiment and a test, wherein the underground working condition simulation device is connected with controlled pressure drilling equipment in series to perform the experiment and the test. The underground working condition simulation device simulates changes of underground working conditions, including a plurality of types of working conditions such as normal drilling, switching slurry pumping, pipe tripping, circulation loss, well kick and the like; and the controlled pressure drilling equipment automatically judges and identifies the working conditions and controls pressure changes according to the changes of the working conditions, and keeps the simulated bottom hole pressure constant to avoid abnormal conditions such as the circulation loss, the well kick and the like. The bottom hole pressure fluctuations are simulated by adjusting the opening of a throttlevalve B according to the flow and the density of a drilling fluid input by a slurry pump A; a choke manifold simulates the bore hole annular pressure loss; the opening of a throttle valve A is adjusted to simulate a circulation loss working condition; and a slurry pump B or an air source is started and the input flow is controlled to simulate a well kick working condition. By adopting the method and the device, the controlled pressure drilling parameters are precisely grasped, and the controlled pressure drilling equipment is debugged delicately.

The invention discloses a method for zero emission treatment of desulfured waste water. The method comprises the following steps: 1) discharging the desulfured waste water obtained after desulfuration in a desulfuration tower into a preliminary sedimentation tank, carrying out primary separation in the preliminary sedimentation tank, and transporting an upper clear liquid separated out to a buffer pool through a slurry pump; 2) successively passing the desulfured waste water in the buffer pool through an atomization plant and a static dust catcher; 3) transporting the waste water which is from the lower part of the preliminary sedimentation tank and has large solid content to a filter press through an another sludge pump; and 4) feeding the waste water filtered back to the preliminary sedimentation tank through the slurry pump. Simultaneously, the invention also discloses a system for zero emission treatment of desulfured waste water. The zero emission treatment is conveniently carried out on the desulfured waste water through the method, the process is simple and labor is saved; and the system has a compact structure, the method is simple to implement, energy is saved, the quality of smoke at the inlet of the dust catcher is improved, the zero emission of the desulfured waste water can be really achieved, thus the system has the advantage of popularization value.

A method and apparatus for converting carbonaceous material to a stream of methane and carbon monoxide rich gas by heating the carbonaceous material in a fluidized bed reactor using hydrogen, as fluidizing medium, and using steam, under reducing conditions at a temperature and pressure sufficient to generate a stream of methane and carbon monoxide rich gas but at a temperature low enough and/or at a pressure high enough to enable the carbonaceous material to be fluidized by the hydrogen. In particular embodiments, the carbonaceous material is fed as a slurry feed, along with hydrogen, to a kiln type reactor before being fed to the fluidized bed reactor. Apparatus is provided comprising a kiln type reactor, a slurry pump connected to an input of the kiln type reactor, means for connecting a source of hydrogen to an input of the kiln type reactor; a fluidized bed reactor connected to receive output of the kiln type reactor for processing at a fluidizing zone, and a source of steam and a source of hydrogen connected to the fluidized bed reactor below the fluidizing zone. Optionally, a grinder can be provided in the kiln type reactor.

The invention discloses a heavy metal polluted sludge treatment method which comprises the following steps: conveying heavy metal polluted bottom sludge of rivers, lakes and reservoirs by a slurry pump of a sanddredger ashore; adding heavy metal chelate stabilizer in a first pipeline blender of dredging pipelines; and then adding flocculant in a second pipeline blender; and finally filling sludge in geotextile bags for volume reduction and dehydration; and concreting for 7-50 days after the sludge filling, wherein the sludge treated by the method can be used for land reclamation, greening or landfilling according to different water contents and heavy metal contents. Compared with the prior art, by environmental-protection dredging, transmission by closed pipelines and heavy metal stabilization, the invention completely solves the secondary solution problem of heavy metals; and the invention combines the heavy metal stabilization and a geotextile bag dehydration technology without power consumption without the input of mechanical dehydration equipment, and is suitable for heavy metal polluted sludge treatment in occasions of large treatment area, short work period, small dehydration site, less once investment, low operation cost and the like.

The invention belongs to the field of shield construction, and discloses a double-mode shield tunneling machine. The double-mode shield tunneling machine comprises a shield tunneling main engine, a cutterhead arranged on the front portion of the shield tunneling main engine, an earth bin, an air cushion bin, an earth pressure balancing system and a slurry balancing system, wherein the earth bin, the air cushion bin are sequentially formed in the rear portion of the cutterhead. When the shield tunneling machine works, the shield tunneling machine can be switched between an earth pressure balancing tunneling mode and a slurry balancing tunneling mode according to the strata of practical tunnels, so that the shield tunneling machine is adaptive to tunneling under different geological conditions, and the adaptability to complex strata and the shield construction efficiency are improved. Meanwhile, a dilution tank and a breaker are mounted on the tail of a spiral conveyer to break large rocks to the grain size which can be conveyed by a slurry pump, and the broken large rocks are then discharged through a slurry pipeline, and in this way, the situation that large rocks cannot be discharged smoothly in a slurry mode can be prevented effectively.

A centrifuge including a bowl, a bowl drive motor, a screw conveyor, a screw conveyor drive motor, a pump, a pump motor, a bowl VFD to drive the bowl drive motor, a conveyor VFD to drive the screw conveyor drive motor, a pump VFD to drive the pump drive motor, an analysis assembly and a computer electrically connected to the bowl VFD, the conveyor VFD, the pump VFD, and the analysis assembly. The analysis assembly is configured to automatically sample slurry pumped into the bowl and automatically transmit data, characterizing the slurry, to the computer. The computer is configured to calculate control schemes for the bowl VFD, the conveyor VFD, and the pump VFD using the data and, transmit control signals to the bowl VFD, the conveyor VFD and the pump VFD to operate the bowl VFD, the conveyor VFD and the pump VFD according to the control schemes.

The invention discloses a pollutant combined removal device and method through recycling of chlorine in coal. The pollutant combined removal device comprises a boiler, a SCR (selective catalytic reduction) denitration device, an air preheater, a dust remover, a desulfurization tower, a chimney, and a slurry pump II, wherein the boiler is connected with the SCR denitration device, the SCR denitration device is connected with the dust remover by the air preheater, the dust remover is connected with the desulfurization tower, and the desulfurization tower is connected with the chimney. The pollutant combined removal device also comprises a desulfurization?wastewater?storage box, an atomizing nozzle, a wastewater conditioning tank, and an air compressor, wherein the atomizing nozzle is arranged on a connection pipeline between the SCR denitration device and the air preheater and connected with the wastewater conditioning tank by the slurry pump II, the air compressor is connected with the atomizing nozzle, and the desulfurization?wastewater?storage box is connected with the desulfurization tower and the wastewater conditioning tank which is filled with strong base. The removal of mercury in fume is facilitated, meanwhile the PH value of the chlorine-rich desulfurization wastewater can be adjusted, so that the desulfurization?wastewater is effectively utilized and the removal efficiency of SO3 in fume is improved.

The invention provides a zirconium oxide ceramic cylinder jacket material, which comprises 65-75wt% of zirconium oxide, 3-6wt% of cerium oxide, 1-3wt% of yttrium oxide, 20-30wt% of aluminum oxide, and 0.5-2wt% of titanium dioxide. The invention also provides a preparation method for the zirconium oxide ceramic cylinder jacket material. The zirconium oxide ceramic cylinder jacket material provided by the present invention has higher strength, toughness and thermal shock resistance, and is able to resist wear, corrosion and high temperature. inner liner of slurry pumping cylinder sleeve prepared from the zirconium oxide ceramic cylinder jacket material has the following advantages that (1) service life is long, performance-price ratio is high, thereby reducing equipment cost consumption, greatly reducing frequency of shutdown to maintain cylinder jacket, reducing economical loss due to stop production and maintenance, and lightening labor intensity of workers; and (2) wearing for piston in the cylinder jacket is reduced, service life of the piston is prolonged, and piston cost is saved.

The invention provides a cutter exploitation method of seabed natural gas hydrates. The method employs a seabed exploitation vehicle, a sea level decomposition and storage system, and a waterpower conveying system for connecting the seabed exploitation vehicle as well as the sea level decomposition and storage system. The seabed exploitation vehicle comprises a reamer, a reamer arm, a crawler type running gear as well as a power and control system, and the like, and is used for cutting and fragmenting the seabed natural gas hydrate. The waterpower conveying system comprises an auxiliary slurry pump, a conveying flexible pipe, a buoyancy ball, a main slurry pump, a conveying hard tube, and the like, and the system is used for conveying the natural gas hydrates which is fragmented by the exploitation vehicle to the sea level decomposition and storage system. The decomposition and storage system comprises a decomposer, a storage container, a mine tailing pipe, and the like, and is used for decomposing and separating the natural gas hydrates which are conveyed by the conveying system and collecting the natural gas hydrates in the storage container, and the separated seabed deposits and other refuses are discharged to the seabed. The cutter exploitation method of seabed natural gas hydrates has high production efficiency and controllable exploitation process, 'air bag' and the like are not needed to construct, and the method has good application prospects.

The invention discloses an abrasion-resistant coating material for repairing abrasion of a slurry pump. The material comprises a primary agent and a curing agent, wherein the primary agent comprises 15-60 parts of epoxy resin, 0-5 parts of a coupling agent, 0-20 parts of flexibilizer, 0-600 parts of a grinding material, 0-60 parts of fibers, 0-80 parts of resin alloy polyphenyl ether, 0-30 parts of an antifriction material, 0-20 parts of an thixotropic agent, namely fumed silica, and 0-50 parts of pigment; the curing agent comprises 5-50 parts of organic amine substances, 3-20 parts of a coupling agent, 0.5-18 parts of accelerant, 0-300 parts of a grinding material, 0-10 parts of an thixotropic agent, namely fumed silica and 0-15 parts of pigment. In the actual application process of the coating material for repairing the slurry pump, the service life after repair is conducted can reach 1.5-2 times that of a new workpiece, for the working condition with large material particles repaired, the service life can even reach four times at times, and repeated repair can be conducted.

The invention discloses a submarine ore collecting vehicle and an ore collecting method thereof. The submarine ore collecting vehicle comprises water jet nozzles (1), an ore sucking hood (2), a spiral flow guiding plate (3), an ore slurry pump (4), a pressure-bearing ore storage tank (5), a relay cabin conveying pipeline (9) and an ore collecting vehicle cabin body (10), wherein the water jet nozzles (1) are closely arranged into a plurality of groups along the bottom of ore sucking hood (2) at certain vertically and transversely inclined angles; the spiral flow guiding plate (3) is embedded into the inner side of the ore sucking hood (2) along a spiral line; the ore slurry pump (4) is connected to the ore sucking hood (2) through an ore slurry pump pipeline, so that local negative pressure is formed in the ore sucking hood (2), and a vertical-axis whirlpool which flows upwards is formed under the flow guiding action of the spiral flow guiding plate (3); the ore slurry pump (4) conveys collected ores to a relay cabin through the relay cabin conveying pipeline (9), and is further connected with the pressure-bearing ore storage tank (5). The submarine ore collecting vehicle and the ore collecting method have the advantages of being environmentally friendly, efficient, lower in energy consumption, and reliable.

The invention discloses an elimination method of slurry pulse signal pump stroke noise. The order formula (N=Fs/Fo) of a comb filter is utilized, wherein Fs is the sampling frequency of a slurry signal, and Fo is a product of the movement rate of a single slurry pump piston and the number of slurry pumps, and the order of the comb filter is determined; when the pump stroke noise is eliminated, a filtering process of a slurry pulse signal is realized by utilizing MATLAB software, and comprises the following steps: 1) collecting the slurry pulse signal on site; 2) according to the signal to noise ratio of the signal, determining the bandwidth (BW) of the comb filter, designing the required comb filter according to the BW and the determined order; 3) converting the slurry pulse signal to enable a signal value to be within an interval (-1,1), and obtaining a signal X(n); 4) loading the signal X(n) into the comb filter to carry out convolution filtering to obtain a filtered signal Y(n); and 5) plotting, and observing a signal filtering situation. The invention breaks through the restriction of a hardware circuit, the MATLAB software is utilized to effectively realize the filtering process of the slurry pulse signal, and meanwhile, the comb filter is applied to the slurry pulse signal so as to further enhance a filtering effect.

This invention discloses a wet method for treating high In-Fe-S Zn concentrate by oxidative acid leaching. Compared with traditional high-pressure leaching technique, the method obviously reduces the operation temperature and pressure. Ore slurry composed of Zn concentrate, surfactant and sulfuric acid aqueous solution is operated at 95-105 deg.C under 0.2-0.4 MPa. The surfactant is sodium or calcium lignosulfonate, which can change the hydrophobicity of sulfide and sulfur, raise the leachin speed, and improve the suspension fluidity of the ore slurry. Since the operation temperature is lower than the normal pressure boiling point of the solution system, normal rubber pipe pump can be used to replace oil diaphragm high-pressure slurry pump, and Ti heat exchanger and vacuum flash evaporator are not needed. The leaching rate of Zn and In is up to 95-99%, and the yield of S is higher than 80%. The leaching solution can be treated according to normal method to recover valuable components, with total recovery rate of In up to 90-95%.

The invention discloses the design method of a two-phase flow pump; the two-phase flow pump comprises a slurry pump, a mud pump, a diving slurry pump, a diving mud pump and a diving two-phase pump; the impeller includes a main impeller and an auxiliary impeller; the main impeller mainly comprises a main vane, an auxiliary vane, a front cover plate and a back cover plate; the impeller is mainly arranged on an impeller shaft; the main vane is inclined to the front cover plate and the back cover plate through the vane inlet segment; the vane outlet segment is vertical to the front cover plate and the back cover plate to form a semi-twisted vane; the vane contour line on the impeller front cover plate has smooth transition to the vane contour line on the impeller back cover plate to form the surface of the semi-twisted vane. The auxiliary vane of the impeller and the auxiliary impeller construct a dynamic sealing device. Based on the semi-twisted vane in the invention, the water power loss and the friction loss are smaller than that of the cylindrical vane; the vibration and noise of the pump are reduced; the pump efficiency is improved; the service life of the impeller is prolonged; meanwhile, the operation of the pump become more stable.

The invention discloses a long screw extrusion-socketed cast-in-place pile construction method based on circulating slurry breast wall, comprising the steps of first, burying a protective barrel and setting a slurry circulating system that comprises a slurry storage tank and a slurry pumping device, with the upper portion of the protective barrel provided with an overflow hole; second, drilling to form a borehole; third, lifting a drill pipe, and casting a slurry breast wall under high pressure: lifting up the drill pipe, and continuously casting wall supporting slurry from bottom to top from the borehole bottom through the drill pipe by using the slurry pumping device; fourth, lowering a reinforcement cage; fifth, casting concrete underwater and recycling the wall supporting slurry, and recycling the wall supporting slurry discharged through the overflow hole to the slurry storage tank for backup. The method has simple steps, is easy to implement, has high hole-forming quality and good construction effect, and enables the construction of a long screw extrusion-socketed cast-in-place pile to be finished simply and quickly, and by casting the wall supporting slurry from bottom to top from the borehole bottom in a high-pressure casting manner, it is possible to effectively protect the wall and keep the borehole bottom clean with no deposit; the wall supporting slurry is reusable.

A method of diagnosing the condition of a slurry pump impeller is provided, comprising collecting vibration data from at least one accelerometer mounted to or proximate the pump over a specific time period; calculating indicators from the collected vibration data, the indicators comprising energy level, crest factor, square root amplitude value, and fault growth parameter; and plotting the calculated indicators against time to generate a fault trend indicative of health or deterioration of the impeller. The method further involves predicting the remaining useful life of the impeller using vibration data-driven prognostics.

The invention relates to a sludge treatment method and treatment system, which realize deep sludge dewatering and create technical conditions for recycling comprehensive utilization of sludge. The treatment method comprises the following steps: (1) regulating the water content of sludge; (2) cutting and crushing the sludge; (3) performing flocculation and filtration aid treatment; (4) draining and dewatering; (5) adding environmental mineral materials; (6) heating, and loosening; and (7) removing moisture. The treatment system adopts a treatment device, wherein the treatment device comprises a storage bin, a shearing dispersion machine, a treatment bin, a draining bin, a slurry pump, a filter press, an ingredient mixing machine, a heating and extruding machine, a loosening and drying machine and a discharging mechanism; the storage bin is connected with the shearing dispersion machine; the shearing dispersion machine is connected with the treatment bin; the treatment bin is connected with the draining bin; the draining bin is connected with the slurry pump; the slurry pump is connected with the filter press; the filter press is connected with the ingredient mixing machine; the ingredient mixing machine is connected with the heating and extruding machine; the heating and extruding machine is connected with the loosening and drying machine; and the loosening and drying machine is connected with the discharging machine. According to the invention, the treatment method is simple, short in process flow and low in treatment cost; and the treatment device is compact in structure, has favorable operation stability and reliability, causes no pollution in the treatment process, and is beneficial to popularization.

The invention is a material to make piston leather bowl of slurry pump, solving the problem of short life. Its characters: the components according to weight shares: natural glue 60-70, butyronitrile glue 30-40, zinc oxide 2-5, stearic acid 2-4, pine tar 4-6, anti-aging agent 2-4, accelerant DM 1.5-2.0, accelerant D 1.0-1.5, high-wearable carbon blacnk 50-90, sulphur 2-5, coumarone 4-9, dibutyl ester 2-10 and short fiber 5-20.

The invention discloses a simulated evaluation device for well-drilling plugging of a stress sensitivity formation. The device comprises a simulated pit shaft, wherein the side wall of the simulated pit shaft is fixedly provided with a plurality of simulated lost-circulation formation devices communicated with the simulated pit shaft; each simulated lost-circulation formation device is composed of a sample carrier and a solid core sample arranged in the sample carrier, one end of the sample carrier is communicated with a thru hole at the side wall of the simulated pit shaft, and the other endof the sample carrier is provided with a through hole; the two ends of the solid core sample are arranged respectively corresponding to the thru hole and the through hole; a sealed confining pressurecavity is formed between the circumferential surface of the solid core sample and the inner wall of the sample carrier, and the confining pressure cavity is communicated with a hydraulic pressure stabilization source by a pipeline; and one end of the simulated pit shaft is provided with a plugging slurry inlet, and the other end of the simulated pit shaft is provided with a plugging slurry outlet, the plugging slurry inlet is communicated with a slurry pump, and the plugging slurry outlet is communicated with the slurry pump by a pipeline, thereby forming a circulatory flow of plugging slurry. The device provided by the invention provides a theoretical basis for the studies on plugging processes of stress sensitivity formations and the plugging effects of different plugging materials.

The invention relates to a continuous preparation system and a preparation technology of whole grain grade tailing cemented filling slurry. The continuous preparation system mainly comprises a tailing slurry collecting buffer feeding device, a deep-cone thickener, a flocculating agent preparing and adding device, an underflow slag slurry pump, a cementing material storage bin, a cementing material measuring and conveying device, an air compression system, a water supply system, a filling accident pool, a stirring system and a filling slurry output pipeline. The preparation technology comprises the steps of conveying tailing slurry to the tailing slurry collecting buffer feeding device through the slag slurry pump, after reducing the pressure to 0.03 MPa through the collecting buffer feeding device and carrying out energy dissipation, feeding the tailing slurry into the deep-cone thickener, and adding a flocculating agent into the deep-cone thickener according to the principle that for per ton of tailing slurry, every 5 to 20 g of the flocculating agent is added, so as to obtain high-concentration tailing slurry with the concentration of 65 to 75%; and conveying the high-concentration tailing slurry and a cementing material into the stirring system according to the fact that the mass ratio of the high-concentration tailing slurry to the cementing material is 1 to (5 to 40), adding water, stirring, and preparing the mixture into the high-concentration whole grain grade tailing cemented filling slurry with the concentration of 65 to 75%. According to the continuous preparation system and the preparation technology, the system is simple, the automation degree during the preparation process is high, the operation is convenient, and the filling slurry can be continuously prepared.

The invention belongs to the field of manufacture of a wear-resistant material of a slurry pump, and discloses a casting and thermal treatment technology for high-chromium iron on a flow passage component of the slurry pump. The high-chromium iron comprises the following components in percentage by weight: 2.7-3.4% of C, 26-28% of Cr, 0.3-0.5% of Si, 0.02-0.04% of RE, 0.6-1.0% of Mo, 0.6-0.8% of Cu, 0.4-0.7% of Mn, 0.6-0.8% of Ni, 1.2-1.6% of W, 0.03-0.05% of B, 0.05-0.15% of Ti and 0.05-0.15% of V. The casting and thermal treatment technology comprises the manufacturing steps of: (1) modeling; (2) material proportioning; (3) electric induction furnace melting; (4) casting; (5) thermal treatment; (6) cleaning and machining. The casting defects can be eliminated by adopting random risers and cast steel coating and enlarging a gate cup for fast gating; quenching and annealing technologies are adopted, the temperature rise speed is controlled to be between 30DEG C/h and 40DEG C/h, the gradient temperature holding is carried out for 1-2h in a temperature interval from 200DEG C to 700DEG C, the quenching temperature is 980-1020DEG C, and the temperature holding time is two to four hours; the high-chromium iron has excellent textures, the Rockwell hardness can reach 63HRC, the impact toughness (20DEG C impact absorbed energy) can reach 4.6J, the service life can be prolonged by 20%, and the properties such as wear resistance and corrosion resistance can be greatly enhanced.

The invention discloses a method for eliminating pump stroke noise in a logging-while-drilling well by using an echo counteraction technology. The method comprises the following steps: (1) the environmental noise is filtered by using a FIR low-pass filter, wherein set parameters of the FIR low-pass filter comprise a filter type, a sampling frequency, frequencies of a stop band and a pass band and a ripple factor; (2) the pump stroke noise is eliminated by using an adaptive filter, wherein signals acquired by a pump stroke sensor are used as inputs of the adaptive filter, and noise generated by a slurry pump is used as echoes formed by distorting the pump stroke signal by a slurry channel; the coefficients of the filter are continuously adjusted by using feedback values to generate outputs similar to the pump stroke noise; and the influence on the signals from the pump stroke noise is eliminated through reverse summation with original signals. The method eliminates the pump stroke noise by using the echo counteraction technology for the input signals containing the pump stroke noise, so that the quality of measurement signals obtained by the logging-while-drilling well is improved.

The invention provides a desulphurization catalyst which can substantially improve desulphurization efficiency, reduce system obstruction and fouling, prevent foaming and overflow of a slurry pump and reduce energy consumption of system, and a limestone-gypsum wet desulphurization technology used for large-scale thermal power, belonging to the technical field of environment protection. The catalyst comprises components by weight percent: 40-70 % of organic polyprotic acid or sodium salt thereof, 0.1-5 % of transition metal salts, 5-15 % of a pH buffering agent, 0.05-2 % of a surfactant and 5-20 % of a scale inhibitor. The catalyst is characterized in that a synergist can be directly added into a filtrate pit of an absorbing tower, uniformly stirred and dissolved and then pumped into the absorbing tower; or the synergist can be mixed with a limestone powder into a certain concentration and then added. By using the flue gas desulphurization catalyst, buffer capacity of a pH value of the slurry is relatively good, an oxidation rate of sulfite is accelerated by more than 30 %, a desulphurization efficiency is improved by 10 %, residual CaCO3 in the gypsum is reduced to be less than 1 %, a water content is reduced to be more than 2 %, distribution of crystal size is relatively uniform, share of rhombic crystal shapes and columnar shapes are increased, a specific surface area of the crystal is increased and a dehydrated performance of the gypsum is relatively good.

The invention discloses a test method for forming a mud membrane by using a slurry shield under high pressure. The method comprises the following steps of: taking undisturbed soil from a construction site, drying, sieving to remove big granules in the soil, and then filling the soil into a test barrel; opening an upper flange cover plate, flushing water to the test barrel in a radial water sprinkling shape, then covering the upper flange cover plate, and ensuring sealing between the upper flange cover plate and the test barrel; after the upper flange cover plate is sealed on the test barrel, pressing air to the upper part of the test barrel through an air compressor; discharging the water under the condition of maintaining the pressure; injecting fluorescent material added slurry to the upper part of the test barrel through a slurry pump; pressing air to the upper part of the test barrel through the air compressor to increase the pressure; pressing air to the upper part of the test barrel through the air compressor again; and horizontally placing the test barrel after the test is finished. By the method, the front stable mechanical mechanism of the slurry shield and the mechanical property of the soil can be researched.

The invention discloses a treatment vehicle and a treating method for sucking sludge in a city pipe network. The treatment vehicle comprises a vehicle; a sludge tank is arranged on the vehicle; a lower-layer sieve and an upper-layer sieve are arranged above the sludge tank in sequence; sieve materials on the lower-layer sieve and the upper-layer sieve are connected with a slag hopper; a sludge suction pump used for sucking sludge from a sludge deposit well is arranged on the vehicle, and is connected with the lower-layer sieve; one side of the sludge tank is communicated with a whirlcone through a slurry pump; the bottom flow of the whirlcone is connected with the upper-layer sieve; and the overflow of the whirlcone is communicated with a cellar well or the sludge tank through a pipeline. After the structure and the steps are adopted, the treatment vehicle and the treating method, disclosed by the invention, can effectively clear out and dehydrate sludge deposited in the city drainage network deposit well, slag charges treated are stored in the slag hopper, and sewage is drained to the network. An engine of the vehicle generates power to drive electric equipment on the treatment vehicle, without an additional power supply.

The invention discloses an intelligent-control irrigating system integrating biogas slurry, water and fertilizer. The system comprises a plurality of soil moisture monitoring systems, a biogas slurry pond, a reservoir, a fertilizer mixing device, a three-stage irrigating pipe network, a pump system and solenoid valves, wherein tail end pipes are uniformly distributed in corresponding regions controlled by the soil moisture monitoring systems; the pump system comprises a biogas slurry pump, a water pump and a pump control box; a processing chip is used for collecting and processing signals of a plurality of probe moisture sensors, the pump control box is used for receiving and processing the signals of the processing chip and controlling the starting and stopping of the biogas slurry pump and the water pump, and the solenoid valves are controlled by the processing chip. The invention also discloses a use method of the irrigating system. The irrigating system adopts the soil moisture monitoring systems to monitor greenhouses in real time and gives instructions to perform irrigation automatically. Therefore, labor is saved, the labor intensity is reduced, the requirement of crops for the soil moisture can be maintained constantly, the defect of uncertainty of the manual irrigation amount is overcome, and the irrigating quality and efficiency are improved.

The invention is a composite sensing device and its quantitative degas device. The density sensor and the temperature sensor connect with the detecting container, the slurry pump transmits the waiting detected well liquid by the conveying tube, and the conveying device connects the quantitative degas device. The quantitative box of the degas device is set at the bottom of the degasser, and the bottom of its side wall has the inlet snout and connects the conveying tube, the bracket is on the quantitative box and has the tray of degasser, and the tray has the limiting slurry inlet, the conductive sensing device is equipped on the bracket and can contact the raw liquid position of the quantitative box. The invention can online correctly detects the density of the well liquid, the conductive ratio and the temperature.