180 results about "Direct combustion" patented technology

The invention relates to the field of gas combustion, and discloses an ultralow-concentration gas heat storage type direct combustion incinerator which comprises a first gas storage tank, an adsorption assembly, a second gas storage tank and a combustor, the adsorption assembly comprises a rack, an upper cover plate and a lower cover plate are arranged on the rack, and the axis of the upper cover plate and the axis of the lower cover plate are vertically arranged; a vertically-arranged rotating body is rotationally installed between the upper cover plate and the lower cover plate, a rotating shaft formed at the rotating installation position is in power connection with a motor, at least three installation holes are formed in the end face of the rotating body in a penetrating mode, the installation holes are formed in the circumferential direction of the rotating body in an array mode, and activated carbon is arranged in each installation hole. The end face of the upper cover plate is provided with a gas inlet, an air outlet and a gas outlet which are communicated with the three mounting holes respectively, when the motor drives the rotating body to rotate, the mounting hole communicated with the gas inlet can be sequentially communicated with the air outlet and the gas outlet, the end face of the lower cover plate is provided with a heat exchange opening, and the heat exchange opening and the gas outlet are coaxial.

The utility model discloses a processing device for biomass direct-combustion coupling power generation, which relates to the field of biomass direct-combustion coupling power generation and comprises a crushing bin, a stock bin, a conveying piece and matched parts, the interior of the stock bin is divided into a feeding bin and a discharging bin through a transverse sieve plate, and the transverse sieve plate is connected with an inclined sieve plate to form a sieving channel; a conveying piece on the outer side of the crushing bin drives a claw hook to convey large-particle materials in the feeding bin back to the crushing bin, and the large-particle materials are matched with crushing teeth to achieve circulating crushing. And an electric heating wire is matched with a heat preservation layer, so that material caking is avoided. Through grading screening, directional circulation crushing and anti-blocking and anti-caking design, the device can efficiently complete biomass pretreatment, material uniformity and device stability are improved, energy consumption and maintenance cost are reduced, and the device is suitable for the direct-combustion coupling power generation pretreatment link of biomass such as wood and straw.

The invention provides an oil, gas, coke and electricity coupling co-production process of low-rank coal, and relates to the technical field of comprehensive utilization of coal, the oil, gas, coke and electricity coupling co-production process comprises the following steps: raw material pretreatment: taking power coal or low-rank coal as a raw material, drying and crushing, and inputting into a dry distillation device; destructive distillation and pyrolysis: pyrolyzing the raw materials by a destructive distillation device to produce raw gas and high-temperature red coke; gas purification and tar separation: purifying and separating the raw gas to obtain chemical products such as coal tar and purified gas; the purified coal gas is divided into two paths, one path flows back to the dry distillation device to serve as a combustion heating heat source, and the other path serves as a product to be sold or used for producing chemical products such as methanol and LNG; directly combusting the red coke: directly inputting the high-temperature red coke into a boiler device for combustion without a coke quenching process; the high-temperature red coke can be separated into coke particles and coke foam by the screening device before entering the boiler device, the coke particles are sold as products, and the coke foam is input into the boiler device for combustion; the low-rank coal is effectively and fully utilized through the co-production process for steam and electric power production.

The invention relates to the technical field of natural gas vehicles, in particular to a parking warm air system of a gas vehicle and a parking warm air control method. The parking warm air system comprises a gas tank, a combustion chamber and a fan assembly, wherein the fan assembly is used for conveying air to the combustion chamber; the air supply pipeline is used for circularly supplying air into the vehicle room, and a heat exchange channel is arranged between the air supply pipeline and the combustion chamber; the temperature sensor is used for monitoring the real-time indoor temperature of the vehicle; and the control assembly is used for adjusting the opening degree of the electromagnetic valve and the gas supply rate of the fan assembly according to the real-time temperature of the vehicle, the target temperature and the pressure parameter in the gas tank. Natural gas is directly extracted from the gas tank, and direct combustion is carried out through the combustion chamber, so that the heating requirement of a driver during rest is met. Furthermore, according to the warm air system, the opening degree of the electromagnetic valve and the rotating speed of the fan can be adjusted according to the pressure in the fuel gas tank, and sufficient combustion and even heating of fuel gas parking warm air are achieved.

The direct-fired machine comprises a direct-fired machine body, a combustor, a recycling assembly and a drainage assembly, the combustor is arranged on one side of the direct-fired machine body, the recycling assembly comprises a conveying pipe arranged on one side of the direct-fired machine body, a box body assembly is arranged at one end of the conveying pipe, a filtering piece is arranged in the box body assembly, and the filtering piece is arranged on the other side of the direct-fired machine body. A water collecting pipe is arranged at the bottom of the box body assembly and arranged at the air inlet end of the combustor. Through the design of the combustor, the conveying pipe, the box body assembly, the filtering piece, the water collecting pipe and the water draining assembly, the arranged combustor has a smoke recycling function, smoke exhausted by the direct-fired machine is recycled through the conveying pipe in the using process, dust and particulate matter in the smoke are filtered through the filtering piece, and the dust and particulate matter in the smoke are filtered through the water collecting pipe; and then the flue gas is conveyed into the combustor, so that the combustor sucks the air and the flue gas and mixes the air and the flue gas, the concentration of oxygen in the air per cubic meter is reduced, and finally emission of nitric oxide is reduced.

The present application relates to waste gas treatment technical field, especially to a kind of direct combustion incinerator water seal fire stopper anti-backfire system and application, including incinerator, combined combustor, waste gas source, waste gas fan, water seal fire stopper main body, desalted water source, desalted water injection component, boundary butterfly valve, waste gas pipeline first hand valve, waste gas pipeline second hand valve, waste gas pipeline third hand valve, waste gas pipeline fourth hand valve, flammable alarm instrument LEL, waste gas pipeline switch valve, water seal fire stopper air inlet pipeline, water seal fire stopper air outlet pipeline and water seal fire stopper burst disc;Water seal fire stopper air inlet pipeline and water seal fire stopper air outlet pipeline are all arranged on water seal fire stopper main body, waste gas source is connected with waste gas fan by pipeline, solve the technical problem that the anti-backfire mode in prior art encounters deflagration backfire or high concentration waste gas impact, fire resistance reliability is insufficient, easily failure due to filter element damage, cannot effectively block flame back to upstream pipeline and device.

The invention belongs to the technical field of environmental protection, and particularly relates to a direct-fired incinerator based on environmental protection, which comprises a transfer component, and a feeding component is arranged at the top of the transfer component; the top of the incinerator is provided with an adapter sleeve box; the exhaust component is arranged at the bottom of the transfer component and is used for exhausting internal dried water vapor; the transfer part comprises a container, and transfer cutting grooves are formed in the left side and the right side of an inner cavity of the container. According to the device, most of water in collected garbage can be removed through an air blowing plate, then the garbage is subjected to fine drying treatment through an upper dryer, and at the moment, the garbage can be flatly laid on the upper surface of a built-in transmission belt under the vibration effect of an internal vibration component; therefore, the problem that residual water in the stacked garbage cannot be dried is solved, the garbage subsequently thrown into the incinerator is ensured to be in a relatively dry state, and the problem that the garbage cannot be fully combusted due to water interference is avoided.

The application discloses a pool fire simulator and simulation method based on gas real fire simulation technology, which comprises a gas cylinder group, a gas conveying pipeline, a simulation oil pool, a rectifying sand layer and a pulse electronic igniter, the simulation oil pool is internally provided with the rectifying sand layer, a plurality of gas guide channels are formed in the rectifying sand layer, the gas cylinder group is connected with the input end of the gas guide channel through the gas conveying pipeline, a controllable gas electronic valve is arranged on the gas conveying pipeline, the simulation oil pool is additionally provided with the pulse electronic igniter outside, and the ignition end of the pulse electronic igniter is located above the output end of the gas guide channel; and the rectifying sand layer is made of steel sand. In the application, the gas real fire simulation is used, and the gas is used as a gas source, compared with direct combustion transformers, the smoke gas amount is small, the system is more environmentally friendly, and through the arrangement of the rectifying sand layer, the transformer oil fire rapid heating can be simulated to the maximum extent, and the combustion characteristics of the actual transformer oil fire are embodied.

A pressurized gasification device adopting heat storage and supply comprises a pure oxygen pipe, a pulverized coal pipe, a cyclone combustion cylinder, a heat storage device I, a heat storage device II, a gasification agent pipe, a temperature detector, a high-pressure fan, a gasification agent nozzle, a gasification furnace, a gasification furnace grate, a coal bunker, a coal lock, a coal lock upper valve, a coal lock lower valve, a chilling chamber and a slag pool. High-temperature flue gas generated by pure oxygen combustion of pulverized coal enters the heat storage device for heat storage, heat is transmitted to a gasifying agent and then is fed into the gasification furnace, the situation that conventional air combustion influences the efficiency of the gasification furnace and direct combustion of lump coal in the gasification furnace is avoided, the operation cost of the gasification furnace is reduced, meanwhile, heat is provided for the gasification furnace in an external heat supply mode, and energy is saved. The operation flexibility of the gasifier is improved.

The utility model discloses an air re-return device of a multi-section type direct combustion furnace, which comprises a recovery machine shell, a recovery assembly is fixedly arranged on one side of the recovery machine shell, the recovery assembly comprises a recovery base and a recovery seat, one side of the top end of the recovery base is fixedly connected with the bottom end of the recovery seat, and a length plate is rotatably connected in the recovery seat. A recycling cover is fixedly installed on one side of the length plate, a lifting groove is formed in one side of the inner wall of the recycling machine shell, and the middle of the lead screw is in threaded connection with a lifting block in sliding connection with the lifting groove. The recovery cover collects oxygen or air injected into the multi-section direct combustion furnace, the oxygen or the air is purified through the filter plate and then flows back into the multi-section direct combustion furnace through the release spraying plate on the release mechanism, the injected oxygen or part of the air makes full contact with materials, waste of the oxygen or the air is avoided, and the machining cost of the multi-section direct combustion furnace is reduced.

The invention belongs to the technical field of coal mine gas treatment devices, and particularly discloses a coal mine gas treatment device which comprises a gas distribution device, a gas storage device, a combustion device and a first valve. The gas distribution device is provided with a first gas inlet, a first gas outlet and a second gas outlet, clean gas is conveyed to the gas distribution device through the first gas inlet, the gas storage device is provided with a second gas inlet and a third gas outlet, and the second gas inlet is communicated with the first gas outlet; the combustion device comprises a direct combustion chamber and a medium heat storage oxidation chamber, the direct combustion chamber is communicated with the third gas outlet and the second gas outlet, the medium heat storage oxidation chamber is communicated with the second gas outlet, and when the concentration of clean gas in the gas distribution device is higher than the preset concentration, the second gas outlet is communicated with the direct combustion chamber; when the concentration of clean gas in the gas shunting device is lower than the preset concentration, the second gas outlet is communicated with the medium heat storage oxidation chamber; the first valve communicates with the third gas outlet and the direct combustion chamber, and the treatment convenience and efficiency are improved.

The application discloses a kind of lost foam casting tail gas electric heating combustion processing device, air inlet pipeline, with the tail gas discharge port of lost foam casting production line is sealed connection by flange, for the treatment gas generated in casting process is transported to pretreatment module;While pipeline inner wall is equipped with anticorrosive coating and guide vane;Pretreatment module is connected with the outlet end of air inlet pipeline and the air inlet end of direct combustion module, for dust removal to treatment gas;Heat recovery module and the outlet end of direct combustion module and the air inlet end of deep treatment module are detachably connected by flange, for recovering high-temperature tail gas waste heat discharged by direct combustion module and realizing energy recycling.The application has the beneficial effects of ensuring gas emission, reducing heat exchange efficiency decay, reducing maintenance energy consumption, reducing dust deposition and pressure loss, prolonging equipment service life, low manufacturing cost, not easy to damage and simple maintenance operation.

The invention discloses a ship BOG compressor parallel operation system and a control method thereof.The ship BOG compressor parallel operation system is characterized in that when a ship main engine gas mode is initially started, one compressor is adopted for independently supplying gas to a ship main engine, and the other compressor is adopted for independently supplying gas to a gas combustion unit for use; by adopting the control strategy, waste caused by direct combustion of natural gas is reduced, stable operation of a fuel gas mode of the marine main engine can be guaranteed, and the marine main engine is more stable in fuel gas mode. BOG formed by natural volatilization of the fuel tank or the liquid cargo tank is used for main engine combustion to the maximum extent, BOG combustion is avoided or reduced as much as possible, and therefore the operation economical efficiency of the LNG liquid cargo ship or the fuel ship is achieved.

The invention relates to a method for operating an internal combustion engine using ammonia as fuel, wherein the ammonia is split into at least a hydrogen-nitrogen mixture by means of a cracker, and wherein, when starting the internal combustion engine, a gas containing at least hydrogen is first supplied from a starting storage tank to avoid a starting delay due to the splitting of the ammonia, and then the hydrogen-nitrogen mixture split at the cracker is supplied to the internal combustion engine. The invention further relates to a quick-start device and an internal combustion engine for the direct combustion of ammonia. The invention avoids the disadvantages of the prior art and ensures a low-emission and direct start (quick start) without lengthy preheating measures in an internal combustion engine using ammonia as the sole fuel.

Disclosed herein is a portable direct-fired cooker including a lower case supporting a roasting plate mounted at an upper portion thereof; an upper case spaced apart from the lower case and including a heater module emitting a flame ignited upon receiving gas toward the lower case; a lifting frame coupled to a lower surface of the roasting plate to support the roasting plate; and a lift unit lifting and lowering the lifting frame, wherein the portable direct-fired cooker further includes: a spring mounted on a bottom surface inside the lower case and elastically supporting the lifting frame. According to the present disclosure, it is possible to smoothly lift and lower a top-down portable direct-fired cooker and to stably maintain a state after the lifting and lowering operations.

The utility model discloses an LNG fuel cabin and a tail gas recovery system thereof. The tail gas recovery system comprises a condensation mechanism, a nitrogen supply mechanism, a miscellaneous gas recovery mechanism, a tail gas emission mechanism and a natural gas storage mechanism, the output end of the liquid nitrogen supply device and the output end of the nitrogen supply device are respectively communicated with the nitrogen supply pipe; the number of the condensers is multiple. The nitrogen supply pipe passes through the interiors of the plurality of condensers and then passes through the nitrogen residual cold recovery device; the miscellaneous gas input pipe passes through the nitrogen residual cold recovery device, and the output end of the miscellaneous gas input pipe is communicated with the input ends of the plurality of condensers respectively; the output end of the miscellaneous gas output pipe is communicated with a tail gas emission mechanism; and the input end of the natural gas storage mechanism is communicated with the lower output end of the condenser. According to the scheme, nitrogen at different positions is fully utilized to recycle the to-be-recycled components, the method that direct combustion treatment is adopted to maintain the low pressure of the fuel cabin can be replaced, and the problem that waste is caused due to the fact that natural gas injected through an existing differential pressure method is mainly subjected to combustion treatment is solved.

The utility model belongs to the technical field of anaerobic fermentation, and provides a direct combustion and biogas slurry waste heat utilization combined anaerobic fermentation heat preservation system which comprises a biomass direct combustion boiler, a heat exchanger, a sewage source heat pump and a heat exchange coil pipe arranged in a fermentation tank, and a biogas residue and biogas slurry mixture outlet of the fermentation tank is connected with the sewage source heat pump; a water inlet and a water outlet of the biomass direct-fired boiler are connected with the primary side of the heat exchanger to form a first circulation loop of a first circulation medium; a water inlet and a water outlet of the heat exchange coil pipe are connected with the secondary side of the heat exchanger to form a circulation loop of a second circulation medium; and a water inlet and a water outlet of the sewage source heat pump are connected with the primary side of the heat exchanger to form a second circulation loop of the first circulation medium. The biogas yield of an anaerobic fermentation project can be obviously increased, and the energy utilization efficiency is improved.

The invention discloses an organic solid waste miniaturized cooperative processing system, which comprises a first conveying unit and a second conveying unit, which are respectively used for conveying household garbage and kitchen garbage; a material inlet of the drying subsystem is connected with a material outlet of the second conveying unit; a feeding hole of the pyrolysis subsystem is respectively connected with a discharging hole of the first conveying unit and a discharging hole of the drying subsystem; a gas inlet of the condensation subsystem is connected with a gas outlet of the pyrolysis subsystem, and a liquid outlet of the condensation subsystem is connected with a liquid inlet of the pyrolysis subsystem; a gas inlet of the secondary combustion chamber subsystem is connected with a gas outlet of the condensation subsystem; one end of the waste heat utilization subsystem is connected with the secondary combustion chamber subsystem, and the other end of the waste heat utilization subsystem is connected with the drying subsystem; and a gas inlet of the flue gas treatment subsystem is connected with a gas outlet of the secondary combustion chamber subsystem. The system and the method have the beneficial effects that the system and the method are suitable for specific scenes where household garbage is high in outward transportation treatment cost or high in environment requirement and cannot be directly combusted, the environment-friendly requirement is met, and the manufacturing cost of the system can be reduced.

The utility model belongs to the technical field of cathode carbon block assembly, and particularly relates to a graphite carbon block heating anti-oxidation device which comprises a first top plate and a second top plate, one end of the first top plate vertically extends to form a first side plate, and the first top plate and the first side plate are L-shaped; one end of the second top plate vertically extends to form a second side plate, and the second top plate and the second side plate are L-shaped; l-shaped first guide blocks are symmetrically arranged at the top ends of the two sides of the second top plate correspondingly, the bottom end of the first top plate is tightly attached to the upper end face of the second top plate, and the two sides of the first top plate are tightly attached to the inner walls of the first guide blocks to slide correspondingly. The width of the first top plate and the width of the second top plate can be adjusted, so that the device is suitable for heating cathode carbon blocks with different widths, the cathode carbon blocks and the upper ends and the side faces of square steel can be well protected, flame is prevented from directly burning the cathode carbon blocks and the square steel, and the anti-oxidation effect is achieved.

The utility model relates to the technical field of waste treatment, in particular to waste treatment equipment for production of polyester-mixed cotton cloth, and the waste treatment equipment comprises a reaction kettle body, a feeding hopper, a separation box, a direct connection pipe, an alcoholysis solution recovery frame, a heating assembly and a cotton fiber cleaning assembly, the feeding hopper is mounted at the top of the reaction kettle body, and the heating assembly sleeves the outer side of the reaction kettle body; the separation box is arranged on the outer side of the reaction kettle body, the two sides of the direct connecting pipe are fixedly connected with the opposite side surfaces of the separation box and the alcoholysis solution recycling frame respectively, and the cotton fiber cleaning assembly is arranged on the outer side of the separation box. According to the waste treatment equipment for polyester-mixed cotton cloth production, polyester in a textile fabric is degraded and removed in a chemical reaction mode, cotton fibers are left, then cleaning is conducted under the dual action of the separation box and the cotton fiber cleaning assembly, and residual alcoholysis agents and catalysts are removed; therefore, a waste treatment mode of direct combustion and heat energy conversion is avoided, and the device is clean, environment-friendly and sustainable in development.

The utility model discloses a roller kiln waste gas waste heat utilization and ultra-low emission synergetic device, and particularly relates to the field of new energy lithium battery waste gas treatment, which comprises a waste gas direct-fired unit at least comprising a direct-fired furnace cavity and a burner; the input end of the waste heat boiler is communicated with the output end of the direct combustion furnace cavity; the input end of the SCR reactor is communicated with the flue gas output end of the waste heat boiler; and an induced draft fan is communicated in a pipeline, connected with the output end of the waste heat boiler, of the chimney in series. The waste heat recovery device can efficiently recover waste heat in waste gas to generate steam to be used for other production sections, the economic value is improved, and meanwhile, the advanced waste gas purification technology is combined, so that ultralow emission of various pollutants in the waste gas is achieved.

The invention discloses a carbon dioxide cycle power generation system integrating methanol energy storage and utilization, and relates to the technical field of power generation systems, the carbon dioxide cycle power generation system comprises a methanol storage tank, a combustion chamber, a gas turbine and a co-electrolytic tank, the methanol storage tank is connected with a methanol decomposition reactor; a synthesis gas compressor is arranged between the combustion chamber and the methanol decomposition reactor; the combustion chamber has a carbon dioxide inlet; the gas turbine is communicated with an exhaust port of the combustion chamber; the co-electrolytic tank is communicated with the exhaust end of the gas turbine, an oxygen branch and a synthetic gas branch are arranged at the exhaust end of the co-electrolytic tank, and the oxygen branch is connected with an oxygen storage tank; the synthesis gas branch is connected with a methanol synthesizer; the methanol synthesizer is communicated with a methanol storage tank; methanol is used as fuel to be applied to direct-fired carbon dioxide circulation, generated carbon dioxide and water can generate carbon monoxide and hydrogen fuel needed by methanol synthesis after being electrolyzed through the co-electrolytic tank, balance of fuel consumption and synthesis is achieved, and reduction of carbon emission is facilitated.

The invention provides a system and method for pyrolyzing retired fan blades based on reheated steam, the system comprises a pyrolysis assembly, the pyrolysis assembly comprises a pyrolysis piece, and the retired fan blades are placed in the pyrolysis piece after being disassembled and broken; a heat source provided by a power plant coupled with the pyrolysis assembly is used for providing a pyrolysis heat source required by the pyrolysis of the fan blade for the pyrolysis piece, and a pyrolysis product is recycled; a heat source provided by the power plant comprises steam with the temperature 50-100 DEG C higher than the pyrolysis temperature of the fan blades. The power plant extracted steam with the matched temperature is used as a high-temperature heat source for pyrolysis of the retired fan blade, so that efficient use of energy is achieved, the power plant extracted steam is used for replacing an existing direct combustion high-temperature heat source, and the thermodynamic second efficiency of the whole system is improved.

A method for heating a steel sheet includes heating a front surface side and a rear surface side of a steel sheet that is passing through a direct fired furnace that has an oxidation zone where operation is conducted at an air ratio of 1 or more and a reduction zone where operation is conducted at an air ratio of less than 1, in which the heating is carried out with flames injected from at least one slit burner while the steel sheet passes through at least the oxidation zone.

This invention reveals a diagnostic and blockage detection system for direct heating process furnaces, aimed at enhancing operational efficiency and safety. The system comprises an accurate dynamic model of the furnace, measuring equipment, and a fault identifier, which work in conjunction to monitor and analyze furnace performance. The dynamic model is constructed using thermodynamic principles, heat transfer, and mass transfer relationships. It is implemented on a powerful computer and calibrated using dimensional specifications and real system data. The model incorporates empirical and semi-empirical relations governing the thermodynamic conditions of crude oil, as well as heat transfer coefficients in both single-phase and two-phase regimes, considering the effects of flame height and combustion conditions. To facilitate real-time monitoring, the system employs various measuring devices, including thermocouples (7) and pressure sensors (6), to capture essential parameters such as fuel flow rate, combustion air flow rate, combustion temperature, and the temperature, pressure, and flow rates of input and output crude oil. These measured values serve as inputs to the mathematical model, allowing for the comparison of model outputs with actual system performance. The fault identifier is designed to classify data into acceptable and unacceptable categories, issuing alerts when the blockage level in the pipes (10) exceeds predetermined thresholds. This functionality enables operators to take preventive actions, such as clearing blockages or performing maintenance, ensuring optimal furnace operation. Overall, this innovative device significantly enhances the ability to detect and analyze blockages in direct heating furnaces, thereby improving operational reliability and reducing downtime, ultimately contributing to better process efficiency in industrial applications.

The utility model relates to the technical field of parking heaters, in particular to a water heating heater which comprises a heater body connected with an oil supply device. The water supply device is communicated with a water path of the heater body; the water supply device comprises a sealable water tank, a water pump connected with the water tank and an output pipeline connected between the water pump and the heater body; wherein a negative pressure circulating water path is further arranged between the water tank and the heater body, the equipment not only provides a hot water function, but also circularly heats water through the negative pressure circulating water path, the heating efficiency of the equipment is obviously superior to that of an air heating machine in the aspect of water heating function, and meanwhile, diesel oil is directly combusted to heat circulating water, so that the heating efficiency of the equipment is greatly improved. Therefore, the energy conversion rate is high, the energy is saved, the environment is protected, and in addition, by means of the characteristic that the water tank can utilize negative pressure to circularly heat water in a reciprocating mode, the energy-saving and environment-friendly water heater can be suitable for wider purposes.

The invention discloses a sludge drying incineration control system and method utilizing coupled pyrolysis gas, and belongs to the technical field of sludge incineration treatment.The sludge drying incineration control system comprises a treatment system and a monitoring control system.The treatment system sequentially comprises a pretreatment device, a drying device, an incinerator, a waste heat utilization device and a flue gas purification device; a shunting regulation and control device is further arranged between the drying device and the incinerator, the shunting regulation and control device comprises a shunting three-way valve, a direct combustion branch pipeline and a pyrolysis branch pipeline, and the outlet end of the pyrolysis branch pipeline is further provided with a pyrolysis device, a pyrolysis gas purification device and a coupling supply device. On the basis of split-flow treatment of sludge from the same source, the pyrolysis unit serves as an internal energy supply unit of the incineration unit, and combustible gas generated by pyrolysis is used for preferentially replacing auxiliary natural gas needed by incineration and carrying out bottom-covering regulation and control, so that an energy self-coupling closed loop in the sludge treatment system is constructed.

The present application relates to the technical fields of denitration catalyst, in particular to an energy-saving direct combustion type denitration catalyst drying equipment, which comprises a device base, the top surface of the device base is fixedly connected with a drying box, the inner surface of the drying box is fixedly connected with a heating pipe, the inner surface of the drying box is provided with a placing platform which is turned over according to the water content on both sides of the catalyst, the inner surface of the placing platform is provided with a centering and lifting claw which centers and lifts the catalyst, the bottom surface of the device base is provided with an air exchange channel which adjusts the air drying direction, the top surface of the air exchange channel is provided with an air outlet channel which increases the air drying range, the outer surface of the air outlet channel is provided with a driven lifting frame, the outer surface of the air exchange channel is provided with a reciprocating poking wheel, the hot air periodically "penetrates back and forth" through the honeycomb catalyst, is alternately blown from both ends of the honeycomb catalyst periodically, the moisture forms bidirectional migration in the module, the water content in unit area is reduced, the air drying is facilitated, and the external dryness and internal wetness are eliminated.

The invention relates to a method for efficiently utilizing tail gas of a powder metallurgy fine reduction furnace, which comprises the following steps: collecting reduction tail gas: inserting the end part of a collecting pipe into a tail gas outlet of the reduction furnace, and storing the reduction tail gas in a gas storage cabinet after passing through a cooler and a dust remover under the action of an induced draft fan on the collecting pipe; waste steel is preheated through the reduction tail gas, wherein when the waste steel needs to be preheated, the reduction tail gas in the gas storage cabinet is supplied to a waste steel preheating device through a tail gas output pipe for combustion preheating; separation of the reduction tail gas: purifying hydrogen and carbon monoxide in the reduction tail gas in the gas storage cabinet through a gas purification system; returning to the reduction furnace for gas supply; according to the method, energy waste caused by direct combustion and emission of tail gas is avoided, the influence of iron-containing dust on the environment is reduced, the unit energy purchasing cost is reduced, and the energy utilization rate is increased. The method plays an important role in resource recycling, energy conservation, efficiency improvement and production cost reduction of a powder metallurgy plant.

The utility model discloses a straw bale direct combustion boiler combustion control system which comprises a fire grate, a boiler falling on the fire grate, a stock bin at the front end of the fire grate, a stock bin negative pressure meter detection port at the upper position of the stock bin, a feeding device connected with a stock bin port, a combustion cavity at the lower end of the stock bin, namely a main combustion area, and a bale breaking device at the upper position in the combustion cavity. A hearth temperature sensor is arranged at the position, close to the connecting arch, of the boiler, and a controller, a fire grate speed reducer, a burnout fan, a fire grate air blower, a heat exchange cylinder, a dust remover, an induced draft fan and a chimney are further arranged. The frequency of the feeding device, the frequency of the bag breaking device, the frequency of the air blowing and inducing fan and the frequency of the fire grate speed reducer can be controlled in a linkage mode according to the temperature condition of the hearth, and dynamic combustion is achieved; micro-negative pressure in the stock bin is realized by detecting the pressure in the stock bin, so that smoke return and fire return of a stock bin opening are avoided; through daily and powerful modes of the bag breaking device, the problems of non-uniform material falling and bag breaking efficiency of straws with different qualities are solved, and the practicability is higher.