541 results about "Coal water" patented technology

The invention discloses a coal moisture content and spatial distribution analysis method and system based on an image spectrum, and belongs to the technical field of coal moisture content analysis, and the method comprises the following steps: obtaining a visible light image and a hyperspectral image of to-be-detected coal; semantic segmentation is performed on the visible light image, and the visible light image is divided into a dry area and a water-containing area; the method comprises the following steps: extracting hyperspectral data of each pixel point in a hyperspectral image of a water-containing area, extracting spectral features of a plurality of wavebands by using a sliding window, and dynamically adjusting through an attention mechanism to extract spectral features related to moisture; constructing a sample sequence by taking the spectral feature and the spatial feature of each pixel point of the water-containing area as samples, inputting the sample sequence into a Transform model, and outputting a feature matrix; pooling the feature matrix, inputting the pooled feature matrix into a least square SVM model, and outputting the water content corresponding to each pixel point of the water-containing area; and performing graded developing treatment according to the water contents of different pixel points to obtain accurate coal water and spatial distribution conditions thereof.

The invention relates to the technical field of dechlorination devices, and provides a high-chlorine coal washing dechlorination leaching device which comprises a dechlorination tank body provided with a washing dechlorination area, and a circulation opening is formed in the bottom of the washing dechlorination area; the conveying part is circularly arranged on the dechlorination tank body, the plurality of push plates are arranged on the conveying part, and the push plates are configured to move along the bottom of the washing dechlorination area under the driving of the conveying part; the screen piece is arranged on the circulation opening; the first spray pipe is arranged on the dechlorination tank body and located below the screen piece, the first spray pipe is provided with a first nozzle, and the first nozzle faces the screen piece. According to the technical scheme, the problems that in the prior art, the dechlorination effect needs to be improved when a traditional kettle body is subjected to water washing dechlorination, and a filter screen part in the kettle body is prone to being blocked are solved.

The invention belongs to the technical field of mining coal-water solid-liquid separation, and particularly discloses a multi-section extrusion progressive auger for a mining coal-water separator and the mining coal-water separator, the multi-section extrusion progressive auger comprises an auger shaft, a spiral conveying section and a spiral cutting extrusion section; the spiral conveying section consists of continuous auger blades fixed at the rear end of the auger shaft; each spiral cutting and extruding section is composed of two spiral blades fixed to the two side walls of the auger shaft, the spiral direction of the two spiral blades is the same as that of the auger blade, and the two spiral blades form an X shape in space. Compared with the prior art, the device is simple in structure and convenient to manufacture, coal water firstly enters the auger blade and is conveyed into the spiral cutting and extruding section at the front end, and water in the coal water can be better extruded out through multi-section progressive extrusion; and in the spiral extrusion process, the cutting edge can cut the spirally extruded coal slime residues, so that the large coal slime residues are cut up, and the coal-water separation effect is improved.

The invention discloses a coal power and clean energy multi-energy complementary system flexibility quantitative evaluation method comprising the following steps: collecting wind / light output historical power prediction errors of a wind power station / photovoltaic station as an error set, and sampling the error set; superposing the extracted wind / light output historical power prediction error value on the input wind and light data to obtain a wind and light load prediction curve; based on the minimum value of the total loss cost of the abandoned electricity quantity and the load shedding quantity in the coal power and clean energy power generation system as a target function, forming an optimal economic dispatching model in combination with constraint conditions; and calculating a flexibility quantitative evaluation index by taking the abandoned electricity quantity and the load shedding quantity as operation intermediate quantities, setting a threshold value of the flexibility quantitative evaluation index, and performing evaluation. Quantitative evaluation of the flexibility of the coal-water wind-light power generation system is realized, and subsequent guidance of setting of the reserve capacity of the power generation system according to the evaluation result is facilitated.

The invention relates to the technical field of coal water slurry additive processing, and particularly discloses a heat exchange device for coal water slurry additive processing, which comprises a reaction kettle, an overhaul bin gate, a rotary sealing mechanism, a first stirring mechanism, a second stirring mechanism, a feeding pipe and a discharging pipe, and the overhaul bin gate is hinged to the front side of the reaction kettle to realize sealed opening and closing. According to the invention, integration of stirring and heat exchange functions and efficient removal of a source of reaction heat are realized; meanwhile, the second stirring mechanism realizes stepless regulation and control of the angles of stirring blades through a built-in electric driving assembly, so that the core technical problems of flowing dead zones, scaling and incapability of adapting to process changes caused by low heat exchange efficiency and function splitting of a traditional device are solved, and the device has the effects of high heat exchange efficiency, deposition prevention, self-cleaning and dynamic and adjustable stirring force.

The invention relates to the technical field of drainage and desilting, in particular to a drainage and desilting subentry system which comprises a drainage system, a coal-water separation module, a drainage module connected with the coal-water separation module, a monitoring module connected with the coal-water separation module and a control module connected with the monitoring module. And the self-cleaning module is connected with the control module. The system has the beneficial effects that separation and discharge paths are separately arranged, so that the separation effect and the clear water purity are improved, the clear water purification reliability is improved by arranging a clear water filter screen, the system is suitable for application scenes with high-standard water quality requirements, and the system fully utilizes the gravity and fluid dynamics principles by combining multi-layer sedimentation and multi-stage filtration, so that the system has high practical value. By means of the scheme, the problem that in a traditional method, clear water overflows to bring up unsettled coal slime is effectively solved, the overall separation efficiency and the water cleanliness are improved, the discharging efficiency is improved, and the water burst phenomenon is reduced.

The present invention discloses a water-coal slurry fluidity detector, which specifically relates to the field of water-coal slurry detection technology, including a base, a diversion detection component is arranged on the base, the diversion detection component includes a support arranged on the base, a cover plate is arranged on the top of the support, and a first delivery pipe is arranged on one side of the cover plate. The present invention realizes the function of gathering the fluid water-coal slurry by delivering the water-coal slurry to the top of the sealing disk and the diversion cavity through the second impeller. As the fluid water-coal slurry in the diversion cavity gradually increases, the fluid water-coal slurry can be diverted and transported through each diversion detection tube. The flow meter in the diversion detection tube first detects the flow of the water-coal slurry transported by the diversion detection tube, and the speed of the second impeller during rotation is fixed, and then the pressure during the extraction and transportation of the water-coal slurry is also fixed, so as to avoid the pressure difference and cause inaccurate detection.

The utility model discloses an orifice blowout prevention system for coal mine production, which comprises a coal gas collecting cylinder, a gas outlet pipe, a gas outlet pipe, a gas outlet pipe, a gas outlet pipe, a gas outlet pipe, a gas outlet pipe and a gas outlet pipe, and is characterized in that the gas collecting cylinder is arranged close to a drill hole and provided with an inlet and a water outlet on the top and the side wall respectively; the coal-water-gas separation box and the rubber guide cylinder are located at a gas outlet of the coal-water-gas separation box, an opening in the lower end of the rubber guide cylinder extends into the coal-water-gas separation box and is used for being pulled upwards in the production process, the rubber guide cylinder is pulled out of the coal-water-gas separation box, and the lower end of the rubber guide cylinder is located in the coal-water-gas separation box all the time. Further, the gas containing volume of the coal-water-gas separation box is increased, and the flowing speed of the gas is increased; according to the utility model, gas overrun accidents caused by instant increase of gas in a construction environment due to the fact that a large amount of gas with pressure in a coal body gushes out from the hole opening of the drill hole in the drilling process during drilling can be prevented.

The utility model relates to the technical field of coal water slurry processing, and discloses a quantitative feeding device for gasified coal water slurry additives, which comprises a mixing barrel, a water inlet pipe is fixedly connected to the upper surface of the mixing barrel, a first feeding hole is fixedly connected to one side surface of the upper surface of the mixing barrel, and a second feeding hole is fixedly connected to the other side surface of the upper surface of the mixing barrel. The additive mixing device has the following advantages and effects that through the arrangement of the mixing barrel, the stirrer and the quantifying barrel, a worker introduces a main material of an additive from the main material end, introduces an auxiliary material from the first feeding hole and the second feeding hole, and starts the stirrer to stir the additive, so that the effect of mixing the additive is achieved; the whole flow control over the additive is achieved through the flow section, the quantitative adding effect is preliminarily achieved, when small-sized quantification is needed, the additive is introduced into the quantification cylinder through the first pump, the telescopic rod ascends synchronously, a small amount of needed additive is extracted, and the small-amount and quantitative feeding effect is achieved.

The utility model relates to a gasification burner for a coal water slurry gasification furnace. Comprising a gasification burner body, a metal protective cover is arranged on the gasification burner body, the metal protective cover comprises a fixed protective part arranged on the outer circumference of the gasification burner body and an end face protective part arranged on the end face of the gasification burner body, and the fixed protective part and the end face protective part are of an integrated structure; a through hole used for gasifying materials sprayed out of the burner body is formed in the center of the end face protection part. A high-temperature-resistant metal coating is fixedly arranged on the outer circumferential surface of the fixed protection part; the gasification burner has the advantages that the gasification burner body can be effectively protected, and the service life of the gasification burner body is prolonged.

The invention provides a coal-based solid waste foamed cement material for filling a coal mine tunnel and a preparation method of the coal-based solid waste foamed cement material. The coal-based solid waste foamed cement material comprises 10-30 parts of coal gasification coarse slag micro powder, 0-30 parts of first-grade fly ash, 70-90 parts of cement, 0.3-0.8 part of a foam stabilizer and 0.1-0.5 part of an additive, the coal-based solid waste foamed cement material is further doped with foam, the mixing amount of the foam is 2-5 times of the volume of the cement slurry, the coal gasification coarse slag micro powder is coal water slurry furnace gasification coarse slag, and the coal gasification coarse slag micro powder is prepared from, by mass, 40% of silicon dioxide, 19% of aluminum oxide, 15% of ferric oxide, 16% of calcium oxide, 3% of sulfur trioxide, 3% of sodium oxide, 1% of magnesium oxide and 0.5% of titanium oxide. And 0.5% of potassium oxide. According to the invention, a physical foaming method is utilized, coal-based solid waste is used as a raw material to replace part of cement, and the foamed cement material with light weight and high strength is prepared, so that the foamed cement material meets the use requirements of underground roadway filling.

The invention discloses an alkaline coal-water corrosion-resistant wear-resistant steel and a preparation method thereof. By reasonably adding elements such as Cr, Cu, Ni, and Sb, the self-corrosion potential and hardness a of the steel plate are improved, and at the same time, a wear-resistant steel with a structure of lower bainite + martensite + retained austenite is obtained; and through process design, the occurrence of cracks in the Sb-containing wear-resistant steel during the production process is effectively suppressed, and a large amount of Ti precipitated phases are retained inside the structure as hydrogen traps, thereby reducing the risk of delayed cracking of the Sb-containing wear-resistant steel plate during use; and through the composite addition of Ti and Mo, in conjunction with a slow cooling process and a heat treatment process design, a large amount of Ti and Mo composite carbides are retained in the quenched steel plate, and these carbides serve as hydrogen traps, thereby greatly improving the hydrogen-induced crack resistance of the Sb-containing wear-resistant steel during service, and finally obtaining alkaline coal-water corrosion-resistant wear-resistant steel with excellent mechanical properties and resistance to hydrogen-induced cracks.

The present invention discloses a pumping and drainage device, which relates to the technical field of coal mine gas drainage. The pumping and drainage device includes a pumping and drainage assembly and a flushing assembly. The pumping and drainage assembly includes a pumping and drainage pump, a liquid storage tank and a pumping and drainage head. The pumping and drainage pump and the pumping and drainage head are both connected to the top of the liquid storage tank. The pumping and drainage pump can extract the air in the liquid storage tank and generate negative pressure to attract the coal water in the downward hole to the liquid storage tank through the pumping and drainage head. The flushing assembly includes a flushing pump and a switching mechanism connected to each other. The pumping and drainage head is connected to the top of the liquid storage tank through the switching mechanism. The switching mechanism can selectively connect the flushing pump with the liquid storage tank, connect the flushing pump with the pumping and drainage head, or connect the top of the liquid storage tank and the pumping and drainage head. The flushing pump can inject water into the liquid storage tank when connected to the liquid storage tank to flush the liquid storage tank, and the flushing pump can also supply water to the pumping and drainage head when connected to the pumping and drainage head to flush the pumping and drainage head. The pumping and drainage device can drain the accumulated water in the downward hole and has the characteristics of good pumping and drainage effect.

The invention provides a boiler combustion optimization method. The boiler combustion optimization method comprises the steps that operation parameters of all key nodes in the combustion process are collected; determining an energy input item, an energy output item and a heat storage energy change item based on the collected operation parameters, establishing a load prediction model, and predicting a load change trend at a future preset moment; a fuel quantity optimization model based on the load change rate is established, the fuel conveying process is optimized, and the ideal fuel quantity is generated; an air quantity optimization model based on the flue gas oxygen content is established, the combustion process is optimized, and the ideal air quantity is generated; establishing a coal-water ratio optimization model based on the steam temperature, optimizing a steam generation process, and generating an ideal coal-water ratio; and controlling a corresponding execution mechanism to act according to an optimization result to realize optimization control of the combustion process of the boiler. By constructing the load prediction model and the combustion parameter optimization model, the dynamic optimization of the fuel quantity, the air quantity and the coal-water ratio is realized, the response speed of the boiler to the load change is improved, and the combustion efficiency and the steam quality are improved.

The utility model discloses a coal slime cleaning device for a coal water sedimentation tank, which relates to the technical field of coal slime cleaning equipment and comprises a sedimentation tank, an inclined slope is mounted on the inner bottom wall of the sedimentation tank, a sliding groove is formed in one side of the sedimentation tank, a splitter plate is mounted in the sliding groove in a sliding manner, a plurality of splitter holes are formed in one side of the splitter plate, and the splitter plate is provided with a plurality of baffle plates. According to the device, the first-stage motor drives the first-stage threaded rod to rotate, the first-stage threaded rod drives the moving block to move, the moving block drives the limiting strip to move, the first-stage threaded rod drives the first-stage threaded rod to rotate, the first-stage threaded rod drives the first-stage threaded rod to move, the first-stage threaded rod drives the second-stage threaded rod to move, and the second-stage threaded rod drives the second-stage threaded rod to move. The inclined slope cleaning device has the advantages that the inclined slope cleaning device is simple in structure, the limiting strip obliquely moves downwards through the limiting effect of the moving block and the sliding rail, the inclined slope is cleaned through the nozzles on the splitter plate, stubborn coal slime adhering to the surface of the inclined slope is scraped through the scraper, the cleaning effect on the inclined slope is achieved, and the coal slime cleaning effect is improved.

The invention discloses a method for jointly preparing coal water slurry by blending gasified fine slag residual carbon and coal for gasification, which comprises the following steps: S1, adding water into gasified fine slag in a black water sedimentation tank, and mixing to obtain a mixed material; s2, carrying out carbon-ash separation on the mixed material in the S1 to obtain residual carbon concentrate and tailings; and S3, mixing the residual carbon concentrate obtained in the S2 with coal for gasification, a coal water slurry additive and water in proportion, and grinding in a ball mill to obtain the coal water slurry. According to the gasification fine slag carbon ash flotation separation method, the gasification waste water is adopted, enrichment and recovery of low-ash residual carbon and high-ash mineral particles can be achieved, meanwhile, pollutants in the gasification waste water can be treated through the porous adsorption performance of the gasification slag, and meanwhile the separation effect is enhanced through the trapping and foaming performance of the pollutants in the gasification waste water. By adopting the technical scheme, reduced emission and resource utilization of the gasified fine slag can be effectively realized, and meanwhile, pulping raw materials are saved.

The invention discloses a gas furnace fly ash co-processing method and system, and belongs to the technical field of solid waste disposal. The method comprises the following steps: S1, grinding raw coal and water to obtain coal water slurry; s2, mixing the coal water slurry and the fly ash to obtain mixed slurry; wherein the water content of the mixed slurry does not exceed 55%, and the wet basis heat value is greater than 2800kcal / kg, so that the mixed slurry can realize self-sustaining combustion after being fed into the furnace; s3, the mixed slurry enters a hearth to be combusted; and S4, high-temperature flue gas generated by combustion enters the next procedure for heat exchange. According to the fly ash co-processing method, on one hand, heat generated by combustion of the coal water slurry can be utilized for heat tracing of the fly ash, so that combustion of the fly ash is achieved, and extra energy consumption is not needed; and on the other hand, the fine fly ash and the coal water slurry are mixed to obtain slurry with certain viscosity, so that the fine fly ash can be effectively prevented from being carried by the airflow and quickly passing through the hearth, the retention time of the fly ash in the hearth is prolonged, and the fly ash is combusted more sufficiently.

The utility model discloses a multi-stage filtration coal sinking system for flushing waste coal water, including: a three-stage coal sinking ditch device and a waste coal water collecting device arranged in a stepped manner from top to bottom, the first coal sinking ditch is arranged horizontally, its inlet end is connected to the tail of the belt-washing coal slag ditch, and a detachable first filter is arranged at the outlet end; the second coal sinking ditch is stepped down to connect the first coal sinking ditch and its cross section is L-shaped, and a second filter is detachably provided at its outlet end; the third coal sinking ditch is stepped down to connect the second coal sinking ditch and its cross section is L-shaped, and a third filter is detachably provided at its outlet end; the inlet end of the waste coal water collecting device is connected to the third coal sinking ditch, a submerged water pump is provided inside, the first filter, the second filter, and the third filter are designed in stages, and an overflow tank is provided on the top side of each filter. The present application adopts multi-stage filtration, the device structure is simple, and the installation is convenient, which can realize the significant reduction and recycling of the coal content in the waste coal water.

The utility model provides a heat transfer strengthening structure, a heat transfer strengthening pipe and a preheating device. The heat transfer strengthening structure comprises a coal water slurry pipe and at least one protrusion distributed on the inner wall of the coal water slurry pipe. The ratio of the height of the protrusions to the inner diameter of the coal water slurry pipe is (1-8): 50. The heat transfer strengthening pipe comprises the heat transfer strengthening pipe structure. The preheating device comprises a shell and the heat transfer strengthening pipe located in the shell. According to the heat transfer strengthening structure, the protrusions are arranged on the inner wall of the coal water slurry pipe and serve as inner wall face modification, blocking during flowing of coal water slurry is prevented, and heat transfer strengthening is facilitated.

The invention provides a coal water slurry gasification system and method taking biomass as a raw material, and belongs to the technical field of biomass green low-carbon utilization. The problem that high-temperature corrosion of equipment is caused in the biomass utilization process due to the fact that the chlorine content in biomass, especially crops, is high is solved. The system comprises a biomass pretreatment unit, a pulverization unit, a pulping unit, a gasification unit and a synthesis gas treatment unit which are connected in sequence. The method is mainly used for biomass treatment and resource utilization.

The utility model discloses a spiral-flow type coal water slurry process burner. The spiral-flow type coal water slurry process burner comprises a three-channel structure, the three-channel structure sequentially comprises a central oxygen channel, a coal water slurry channel and an outer epoxy channel from inside to outside; the central oxygen channel, the coal water slurry channel and the outer epoxy channel are connected through flanges; a cooling water assembly is arranged on the outer side of the outer epoxy channel; a central oxygen cyclone is fixed on the inner wall of the central oxygen channel and comprises a cyclone bracket and a first cyclone sheet; one end, far away from the burner head, of the rotational flow bracket is in a pointed cone shape; the first swirl piece is formed by stretching a first end face along a curve, and a first adjacent side face of the first swirl piece is fixedly connected with the swirl support. Through a rotational flow form, the mixing effect of oxygen and coal water slurry is enhanced, and the purpose of sufficient mixed combustion is achieved, so that the carbon conversion rate is improved, the yield of carbon monoxide and hydrogen serving as main components in the period of validity is improved, efficient and clean utilization of coal resources is realized, and the production cost is reduced.

The present invention relates to the field of water-coal slurry additives, and specifically to a water-coal slurry additive preparation device, comprising a screening and drying device and a casing, wherein the screening and drying device is provided with three groups, the three groups of screening and drying devices are arranged in a linear array and are connected in pairs, the three groups of screening and drying devices are all located inside the casing and are connected to the inner wall of the casing, the screening and drying device comprises a grinding assembly: and also comprises: a screening assembly connected to the grinding assembly, the present invention utilizes a crank slider mechanism to make the three groups of screens shake rapidly, thereby repeatedly screening the materials crushed by the grinding assembly, and at the same time, in the screening process, a hot air inlet fan and an exhaust fan are utilized to complete the hot air exchange of the materials, thereby screening and drying the materials, so as to solve the problem that the existing water-coal slurry additive preparation equipment requires the cooperation of multiple devices and has low preparation efficiency.

The present invention provides a water-circulating coal-water separation integrated machine, which belongs to the field of coal-water separation technology, and includes a walking platform, a coal-water separation mechanism, a booster pump and a first drive motor, wherein the first drive motor provides power for the booster pump, and the booster pump pressurizes the water separated by the coal-water separation mechanism and delivers it to the drilling rig water supply device, and the coal-water separation mechanism is used to continuously separate the coal-water mixture collected by the orifice collector and store the separated water. The whole machine of the present invention adopts a walking structure, utilizes the coal-water separation mechanism to perform online continuous solid-liquid separation of coal and water, utilizes the booster pump to pressurize the water separated by the coal-water separation mechanism and delivers it to the drilling rig water supply device, so that water resources are recycled, which not only improves the environment of the roadway, and enables a large amount of coal and water to be separated and recycled during drilling and punching, but also is easy to move, simple to operate, and low in cost.

The invention provides a coal-water cooperative control method and a coal-water cooperative control device based on water quantitative control. The method comprises the following steps: acquiring water volume data in a coal production process in real time; the water volume data are input into a control strategy model, the water volume data and a preset control rule are analyzed and processed through the control strategy model, a control instruction is generated, the control strategy model is a mathematical model constructed according to training data and a control algorithm, the training data at least comprise sample water volume data and a corresponding sample control instruction, and the sample control instruction is a preset control instruction; the control instruction is used for adjusting the water-coal proportion in the coal production process; a corresponding actuator is adjusted according to the control instruction so as to dispatch and distribute water resources in the coal production process, and the actuator at least comprises a water pump and a valve. The problem that the utilization rate of water resources is low due to the fact that real-time response to water quantity changes in the coal production process is lacked in the prior art is solved.

The invention relates to the technical field of wastewater treatment, in particular to an intelligent coal-containing wastewater zero-discharge treatment system which comprises an integrated electric flocculation system, a self-circulation treatment zero-discharge process system, a large-capacity coal water treatment pre-sedimentation system, a distributed coal water collection system and a comprehensive application system. Wherein the integrated electric flocculation system comprises an electronic flocculator. According to the coal-containing wastewater treatment method provided by the invention, zero emission of coal-containing wastewater can be realized, the environmental protection benefit is remarkable, the treatment efficiency and effect are improved, the water quality is ensured, and the cost of a sludge treatment system is also saved. Intelligent unattended operation is realized, and the operation cost is reduced. Therefore, the problems in the prior art are solved.

The application discloses a kind of concentrated pool coal-water interface video image recognition device and method, comprising: sequentially connected concentrated pool fixed module, mobile module, image acquisition module and image processing module;The mobile module uses movable guide rail, under the guidance of the concentrated pool fixed module, the video information in the concentrated pool is collected by the image acquisition module, and based on image processing module, the video information is analyzed and processed, the number of coal particles is obtained, and then the coal-water interface is identified.The application has the characteristics of non-contact and intelligence by image processing method, with the help of the relatively mature image processing technology and data transmission technology, the dependence on hardware such as sensor is lower, and it is easy to upgrade and transform.

The invention relates to the field of additive storage, in particular to a coal water slurry additive storage device based on coal chemical industry, which comprises a barrel body, a bottom plate, a top plate, a connecting cylinder, a rotating rod, a stirring plate, a blocking assembly and the like, the barrel body is rotationally connected with a bottom plate; the barrel is connected with a top plate; the bottom plate is fixedly connected with a connecting cylinder; the connecting cylinder is connected with a rotating rod; the rotating rod is fixedly connected with a stirring plate. After the barrel body is inverted, dispersing agent powder needs to flow through a stirring plate, dispersing agent powder blocks which flow through the stirring plate and are bonded together are scattered through the stirring plate, and it is avoided that due to the fact that the dispersing agent powder blocks block an outlet of the storage device, workers need to dredge the outlet of the storage device, and the storage device is unblocked. And the problem that the workload is caused to workers due to the fact that the dispersing agent powder in the storage device can be normally poured out is solved.

This invention discloses a novel, low-load, high-efficiency thermoelectric decoupling heating system. The system is characterized by replacing the high-pressure bypass section with an extraction section. This extraction section extracts steam from the middle of the superheater and uses this steam to heat the secondary air or drive the induced draft fan. Compared to existing technologies, this invention, after heating the secondary air or driving the induced draft fan, returns the steam to the cold section, thus overcoming the problem of limited extraction capacity in conventional systems. It also allows for changes in the coal-to-water ratio within the boiler under low load conditions, increasing the outlet steam temperature of the superheater and reheater under low load conditions, and avoiding the widespread problem of underheating of main steam and hot reheat steam under low load conditions.

The utility model discloses an abrasion -resistant coal water slurry feed diaphragm pump relates to coal water slurry conveying technical field, including fixed base, four pump body housings are fixedly connected through the fixed stand on the fixed base, both ends of each pump body housing are fixedly connected with fixed end cover in thread, and both sides fixed end cover correspond fixedly connected with inner hose diaphragm and outer hose diaphragm between pump body housing inner chamber, the inner hose diaphragm is inserted to the center of outer hose diaphragm, and one side fixed end cover is buried with pressure sensor between annular gap end position between inner hose diaphragm and outer hose diaphragm, and the structure of double hose diaphragm makes the coal water slurry that is transported only with inner hose diaphragm inside and modular one -way valve contact, and is completely isolated with the pump cavity of pump body housing. Effectively avoid the corrosion and abrasion of the pump cavity of pump body housing to coal water slurry. The deformation of inner hose diaphragm and outer hose diaphragm is closer to the expansion and shrinkage of radial, avoids stress concentration, and makes fatigue life greatly improve.

The invention discloses a crossheading coal-water separation reversed loader self-adaptive to the water inflow of a working face. At least two drainage grooves and a convex groove communicated with the drainage groove at the tail end are sequentially formed in a suspended section of the reversed loader; a shifting mechanism communicated with the convex groove lower chain way is arranged below the convex groove; the sorting and transferring mechanism comprises a box body, a power shaft, a spiral blade and a driving part; the inlet end of the box body is communicated with the outlet end of the material stirring mechanism, the water level sensor is installed at the lower end of the box body, the power shaft is rotationally installed in the box body, the spiral blade is fixedly installed in the axis direction of the power shaft, the driving part is installed outside the box body, and the input end of the driving part is connected with the input end of the power shaft. And the controller is electrically connected with the water level sensor and a frequency converter of the reversed loader driving motor through wires. The water level sensor is arranged in the box body, a water level signal is detected in real time, the scraper chain speed of the coal-water separation reversed loader is adjusted according to the water level signal, and when the water inflow of a working face is higher than a normal value, the coal-water separation effect can be guaranteed.