35results about How to "Reduce dust removal load" patented technology

The invention relates to a device and method for removing sulphur dioxide and dioxin from sintering flue gas. The device comprises a circulating fluid bed adsorption tower (2) and a bag-type dust collector (13), wherein a desulphurizer bin (3) and a water spray nozzle are arranged at the bottom of the circulating fluid bed adsorption tower (2); a cyclone separator (6) and a flue duct (8) are sequentially arranged between the top of the circulating fluid bed adsorption tower (2) and the top of the bag-type dust collector (13) along the flowing direction of flue gas; and a plurality of activated carbon spray nozzles (12) are arranged at one end of the flue duct (8) adjacent to the bag-type dust collector (13) in the direction opposite to the flowing direction of the flue gas, and are communicated with an activated carbon bin (10). The device and method for removing sulphur dioxide and dioxin from sintering flue gas, provided by the invention, have the advantages that the sulphur dioxide and the dioxin are separately removed, the influence of the sulphur dioxide on absorption of the dioxin by activated carbon in the flue gas is reduced, and the efficiency of removing the dioxin is increased; and due to the adoption of spiral fins (9) in the flue duct, gas-solid mass transfer of the flue gas and the activated carbon is strengthened, and the efficiency of removing the dioxin from the flue gas can be obviously improved.

The invention discloses a coal gasifier for slag granulation and a coal gas preparation process. The coal gasifier is mainly composed of a pressure-bearing housing, a slag film gasification device, an annular chamber structure slag basin, a quenching chamber, a conduit, a convection cooling section and the like. The process comprises the following steps: with pulverized dry coal or coal water slurry as a raw material, feeding the raw material to a gasification chamber to burn and gasify together with a gasifying agent from a vortex gasification burner; enabling formed liquid slag to collide with the wall surface of the gasification chamber under the vortex action, and flowing from bottom to top under the action of gravity; feeding to the slag basin of the annular chamber structure, carrying out further gasification reaction together with oxygen fed from the upper part of the slag basin, and discharging from a slag discharge hole; feeding coal gas main airflow to the quenching chamber together with liquid drops, cooling to a specific temperature, and then conveying to the convection cooling section to further lower temperature through the conduit; finally removing dust, purifying and then outputting. The liquid slag drops penetrating through the slag basin are cooled to form solid particles and are collected by a dry slag collector; and the heat is recovered by a slag cooler.

The crushed coal pressure gasifying process for producing synthetic gas includes pressure gasifying of crushed oil in a fixed bed to produce crude gas, and the subsequent self-heating pure oxygen partial conversion of crude gas to produce synthetic gas. Thus produced synthetic gas has high effective gas (CO+H2) content, low CH4 content, less impurities and other advantages, and is suitable for large scale synthetic gas production.

The invention discloses a solid heat carrier pyrolyzer which comprises a top cover (1), a bed (2) and a rotary mechanism. An annular pyrolysis tank is arranged on the top face of the bed, the top cover covers the pyrolysis tank from the upper side, and a feed inlet (5), a pyrolysis gas outlet (6) and a discharge point communicated with the pyrolysis tank are sequentially arranged in the circumferential direction of the sealed annular area, corresponding to the pyrolysis tank, in the top cover in a spaced mode; in the sealed annular area, one side sector ring area between the discharge point and the feed inlet is a pyrolysis area (D1), and the other side sector ring area is a reheating area (D2) provided with heating air pipes (7). Solid heat carriers in the pyrolysis tank rotate along with the bed and are reheated by a heating device, enter the pyrolysis area after being heated, and are mixed with pyrolysis raw materials and pyrolysized, one part of pyrolysis products serve as pyrolysis finished product and are discharged through the discharge point, and the other part of the pyrolysis products circularly flow back to the reheating area. The pyrolyzer is novel and compact in structure and small in occupied space, and integrates pyrolysis, discharging and solid heat carrier heating and circulation functions.

Provided is an experimental method and a device for step purification of powdered coal pyrolysis high temperature tar containing dusts. The method comprises the steps: adding dust particles into a screw feeder through a hopper; filling solid filter particles into a bed fixing filter; adding pure tar into an injection pump, heating the pure tar to gasification; introducing nitrogen gas from a nitrogen cylinder into an experimental system and into a buffer tank; introducing dusts through the screw feeder, introducing tar gas through the injection pump, after mixing the nitrogen gas introduced through the buffer tank with the dusts to obtain a mixture, and the mixture successively entering into three-level dust removing devices of a cyclone separator, the bed fixing filter, a condensation sedimentation device, cooling and separating purified gas mixture by a cooler and a cyclone hydraulic separator to obtain purified tar, introducing remaining nitrogen gas into a tail gas buffer tank, and pressing the remaining nitrogen gas into a nitrogen buffer tank through a gas booster pump driven by an air compressor to continue to use; and when sampling to measure dust removal efficiency of one level, opening a glass fiber filter membrane sampling apparatus connected with a bypass, and collecting and weighing intercepted dust to calculate the dust removal efficiency. The experimental method and the device for the step purification of the powdered coal pyrolysis high temperature tar containing the dusts are applied to step purification experiment study of high temperature tar gas containing the dusts.

The invention relates to a radiation pyrolytic tube and a pulverized coal pyrolytic rotary furnace. The radiation pyrolytic tube comprises three radiation tubes which are sequentially connected, namely a first radiation tube, a second radiation tube and a third radiation tube, wherein a fuel gas nozzle and an igniter are arranged inside the second radiation tube; the pulverized coal pyrolytic rotary furnace comprises a rotary furnace body, wherein a plurality of radiation pyrolytic tubes are arranged inside the furnace body. By adopting the pulverized coal pyrolytic rotary furnace, the smoke afterheat is utilized for preheating and drying the raw coal and the carbocoal afterheat is utilized for preheating the combustion air and the coal gas; the heat utilization rate is high, the pulverized coal drying, preheating, pyrolysis and carbocoal cooling process are integrally designed and the pyrolytic process is simplified. The rotary furnace provided by the invention is large in heat exchange area, high in pulverized coal processing amount, simple in structure and suitable for million tons of pulverized coal large-scale pyrolytic production.

The invention relates to a gas-solid joint biomass partition speed control pyrolysis system and a use method thereof. The gas-solid joint biomass partition speed control pyrolysis system is mainly characterized in that the process for pyrolyzing by a device includes three stages, wherein the first stage is the drying and deashing stage, and the second stage is the secondary-moderate-temperature pyrolysis stage, and the third stage is the moderate-temperature pyrolysis stage. In the first stage, the low-temperature smoke is taken as the heat carrying medium, and all the waste gas is diffused; in the second stage, the inert solid ball is taken as the heat carrying medium, and the main purpose is to reduce the amount of the smoke entering the pyrolysis gas and avoid the secondary pyrolysis of the tar in the high-temperature region so as to improve the yield of the liquid product; and in the third stage, the high-temperature smoke is taken as the heat carrying medium, and the convection current is adopted to strengthen the medium transfer and the heat transfer in the holes of the biomass. The gas-solid joint biomass partition speed control pyrolysis system in the invention has the comprehensive effects that the quality of the product of pyrolysis is improved greatly, the heat efficiency of the gas-solid joint biomass partition speed control pyrolysis system is improved greatly, the gas treatment equipment is simplified, and the power consumed to treat the gas is reduced greatly.

The invention relates to a method and device for drying materials. A moving bed drier consisting of heating plates which are alternately sloped in the opposite direction is driven by a swinging mechanism to swing, and the sloping angles of the sloped heating plates are extended, so that the materials are promoted to flow, moving of the materials on the heating plates and material transporting between the heating plates from top to bottom are realized, and high-efficient drying of the materials in the moving bed drier and smooth material moving are achieved; through the adjustment of swinging range and swinging speed, the adjustment of drying capacity is realized, and ordered controllable moving of the materials from top to bottom is simply realized; the control of thickness of feeding layers of the heating plates of the materials and interface updating of materials in layers and heating surfaces are also realized, and smooth moving and smooth discharging of the materials are realized.The method disclosed by the invention has the characteristics of being low in investment cost, low in operation power consumption, low in equipment wear, low in dust removal load, and simple and efficient in device, and a high-efficient low-cost technique and device guarantee are provided for drying of the materials.

The invention discloses an economizer hopper of a coal-fired boiler in a power plant. In a reversing chamber of the economizer hopper of the coal-fired boiler, one to five stages of herringbone guide plates are arranged along the horizontal direction, or two to seven stages of T-shaped guide plates are arranged along the vertical direction; the nasal tip of the reversing chamber of the economizer hopper is additionally provided with a guide plate; the outlet of the bottom of a dust hopper is provided with a blocking valve; the outlet of the blocking valve is connected with an ash storage hopper; and the outlet of the ash storage hopper is provided with a blocking valve. The dust collecting efficiency of the economizer hopper is greatly improved; and the ash content of the flue gas entering an air preheater is effectively reduced. The economizer hopper has high operability and obvious effect, can reduce or thoroughly manage ash fouling in the air preheater so as to alleviate or avoid the low-temperature corrosion of the air preheater and reduce the cost of cleaning the ash fouling of the air preheater. The economizer hopper has the advantage of simple process flow, less equipment and easy implementation. The method is applicable to the reform design of the equipment which has been put into operation, and is also applicable to the system design of new equipment.

The invention discloses an adjustable dedusting device for uniform dust removal, which comprises a device body; the device body is mainly composed of a flue gas inlet, a flue gas outlet, an ash hopper, a base and a cloth bag assembly, and an annular groove is arranged on the inner wall of the device body , a turntable is arranged inside the annular groove, a first motor is fixedly connected to the top of the device body, a rotating shaft is arranged inside the device body, the top of the rotating shaft is connected to the shaft extension end of the first motor, and the other end of the rotating shaft is fixedly connected to the turntable, the base The bottom is provided with a cavity, and the bottom of the cavity is fixedly connected with a connecting plate; the top of the cavity is fixedly connected with a second motor by means of bolts, the bottom of the second motor is connected with a rotating shaft, and the rotating shaft is threadedly connected with a first connecting plate, The bottom of the first connecting plate is fixedly connected with stabilizing teeth, the rotating shaft is threadedly connected with the second connecting plate, and the two ends of the second connecting plate are connected with rollers through fixed rods. The device has strong applicability, high flue gas dust removal efficiency and long service life of the bag.

The invention discloses a purifying device for organic waste gas. The purifying device comprises a filtering box, a negative pressure fan, a plurality of waste gas branches, a waste gas main pipe, a waste gas guide pipe and an overhauling system, wherein a gas inlet and a gas outlet are formed on the filtering box; one end of each waste gas branch is communicated with the negative pressure fan while the other end of each waste gas branch is communicated with one end of the waste gas main pipe; the other end of the waste gas main pipe is communicated with the gas inlet; a baffle is arranged in the filtering box so as to divide the filtering box into a primary filtering chamber and a secondary filtering chamber; the waste gas guide pipe penetrates through the baffle and is used for communicating the primary filtering chamber with the secondary filtering chamber; a protective screen is arranged on the inner wall of the primary filtering chamber; a primary filter is arranged in a chamber defined by the protective screen; an active carbon filter is arranged in the secondary filtering chamber. The purifying device for organic waste gas provided by the invention has the advantages of good dust removing effect and convenience in maintenance.

The invention discloses a hinge dust-discharging high-efficiency cloth bag dust removal device, which comprises a device body; the device body is mainly composed of a dust removal shell, an ash hopper, a flue gas inlet, a clean gas outlet and a bag assembly; the dust removal shell The body is fixedly connected with a keel, the bottom of the keel is fixedly connected with a bag assembly, and the side wall of the bag assembly is fixedly connected with a cloth bag strip, and the top of the device body is fixedly connected with a cylinder. It is connected with a moving rod, and the surface of both sides of the moving rod is evenly distributed with locking teeth. The dust removal housing is rotatably connected with a rotating shaft, and the two ends of the rotating shaft are fixedly connected with fan plates, and the rotating shaft is fixedly connected with gears. Tooth fit connection. The device has good stability, is easy to move, has high dust removal efficiency, and has a small bag dust removal load.

The present invention discloses a two-stage type entrained flow gasification furnace. In the prior art, under the working condition of dry coal powder entrained flow gasification, the gasification furnace with characteristics of cleaning, long service life, high concern conversion rate and high gasification reaction intensity is required to be developed. The two-stage type entrained flow gasification furnace is characterized in that the outlet of the pre-gasification chamber is obliquely inserted into the main gasification chamber, a ratio of the height from the center of the pre-gasification chamber outlet to the main gasification chamber bottom portion to the diameter of the main gasification chamber is 0.3-2:1, the included angle alpha formed by the axial line of the pre-gasification chamber and the axial line of the main gasification chamber in the vertical cross-section is 30-90 DEG, the included angle beta formed by the axial line of the pre-gasification chamber and the tangent line of the main gasification chamber in the horizontal cross-section is 30-90 DEG, the top portion of the pre-gasification chamber is provided with a coal gasification burner, and the main gasification chamber is provided with a gasification agent spraying nozzle. According to the present invention, the service life of the furnace lining is prolonged, the waste of the fuel due to the falling of the coal powder into the slag pool through the slag discharge port is reduced, and the two-stage type entrained flow gasification furnace is suitable for the occasions using the coal powder to prepare the industrial fuel gas.

A classified coke discharge method and equipment for a carbon hydrogen powder pyrolysis scorching system using solid heat carrier method are disclosed, and are suitable for pulverized coal pyrolysis fluidized bed scorching process, in the carbon hydrogen powder R10FS pyrolysis scorching system UNIT using solid heat carrier R10KS, at least one portion of small particle LS with the particle size less than critical particle size DZ in material EM containing the solid heat carrier is separated at any process position the solid heat carrier R10KS circularly flows to pass through, collected and discharged to reduce the concentration of the small particle LS in the solid heat carrier, the dedusting load of a pyrolysis reaction gas-solid product can be significantly reduced, and the solid contentin pyrolysis tar can be reduced.

The invention discloses a method for reducing process energy consumption of an European smelting furnace, which is characterized in that acid pellets are matched with high-alkalinity sinter, and according to the cost performance and economical efficiency of ore smelting, an ore matching structure suitable for a furnace charge structure of a reduction furnace of the European smelting furnace is obtained as follows: 40% of sinter, 57% of pellets, 3% of raw ore and 97% of clinker rate. Components of the sintered ore are stabilized, the alkalinity of the sintered ore is stabilized to be R = 2.4 times, the content of MgO is 2.4%, and the content of rotary strands is larger than 80%; coal injection is conducted on a vault, the coal injection amount stably reaches about 150 kg/tHM, the material level of the gasification furnace is stabilized, 25 material levels before tapping are stabilized at 50%, 24 material levels after tapping are not smaller than 100%, and low material levels or long-term full material levels are completely eradicated; the coke foam is discharged from a 2500m < 3 > blast furnace, the particle size composition of 5-10mm is 60%, the particle size composition of the slack coal is 5-10mm and is kept above 50%, the moisture of the coke foam is less than 5%, and the moisture of the slack coal is less than 8%; the volatile matter of the slack coal is controlled to be greater than 35%, the gas generation amount is increased, and the fuel consumption is reduced.

The invention discloses a household garbage, municipal sludge and kitchen garbage co-processing method and device. The household garbage is fed into a pyrolysis gasification furnace to be combusted and decomposed; municipal sludge and kitchen waste are mixed to form sludge waste, the sludge waste is transferred into an anaerobic fermentation tank for fermentation after being subjected to thermal hydrolysis treatment, and biogas generated in the anaerobic fermentation tank is used as external fuel; and the biogas slurry in the anaerobic fermentation tank is precipitated and filtered, then is introduced into a quench tower in the flue gas purification system in a spray form and is used as desuperheating water, and the flue gas is primarily deacidified in the quench tower through the alkalescence of the desuperheating water. The method not only solves the problem of solid waste garbage treatment and purifies the environment, but also can realize resource waste heat utilization and heat supply, heat supply or power generation, does not discharge waste water such as biogas slurry, and realizes energy cyclic utilization.