221results about "Steam generation using pressure" patented technology

Disclosed in the present invention are a main steam temperature control method and system for an incineration boiler of a waste incineration power plant. The method comprises: forming a cascade PID control dual-loop on the basis of a primary desuperheater, a primary superheater, a main PID controller and an auxiliary PID controller, and tuning the cascade PID control dual-loop; obtaining the current main steam flow rate, the current main steam temperature and the current boiler hearth temperature, and the main steam temperature and the boiler hearth temperature after a set delay time; obtaining the current actual waste treatment amount and the density of waste entering the incineration boiler, and calculating a predicted value of the current waste incineration heat; calculating a temperature feedforward value of the main steam temperature; and superimposing the temperature feedforward value and a temperature adjustment value output by the auxiliary PID controller in the cascade PID control dual-loop, generating a control value on the basis of the superimposed value, and controlling the water spraying amount of the primary desuperheater on the basis of the control value. In the present invention, on the basis of conventional PID cascade dual-loop control, correction value feedforward compensation is added to the control loop, thereby effectively improving the stability of the main steam temperature in waste incineration power generation.

The invention discloses a small micro-superheated steam through-flow type gas condensation boiler, belongs to the technical field of boilers, and solves the problems that the current small gas boiler is developed towards the high-efficiency, low-emission and compact direction, and particularly pays attention to waste heat recovery and steam quality control. Comprising an annular water chamber allowing water to enter, a combustion chamber arranged above the annular water chamber and an ultra-low nitrogen surface fiber combustor located above the combustion chamber and communicated with the combustion chamber, and an annular steam chamber is arranged above the combustion chamber. The ultra-low nitrogen surface fiber burner works to burn gas and raise the temperature, and the composite fin straight water pipe converts water in the water pipe into wet steam through efficient heat exchange of the spiral fins and enters the annular steam chamber. External water is injected into the annular water chamber through the finned tube group of the flue gas condenser and the connecting tube, and then enters the steam chamber through the straight tube. Wet steam in the steam chamber enters the superheater through an inlet pipe to form micro superheated steam. Combustion smoke is condensed and discharged after being filtered by a filter screen and subjected to heat exchange, and dryness of the combustion chamber is guaranteed.

The utility model discloses an oxyhydrogen burner for SOEC, which comprises a cylindrical steam generating device, and the outer wall of the steam generating device is connected with a pure water inlet pipeline and a steam outlet pipeline; a cylinder is sleeved with the steam generating device, the bottom of the cylinder is close to the bottom of the steam generating device, the lowest end of the cylinder is connected with an outlet pipeline, and the outlet pipeline protrudes out of the lower end of the steam generating device. The outer wall of the cylinder body is connected with a flame detection opening; a hydrogen inlet pipeline and an oxygen inlet pipeline are inserted above the outer wall of the barrel; a flame holder, a catalytic grating and a premixing device are arranged in the barrel. Fuel and air can be evenly mixed, combustion is sufficient, and the heat utilization rate is increased.

The utility model discloses a coil pipe type steam boiler, which relates to the technical field of coil pipe type steam boilers, and comprises a boiler body, a burner arranged at the upper end of the boiler body, an energy saver arranged at the rear end of the boiler body, a chimney arranged at the upper end of the energy saver, a steam-water separator arranged on one side of the boiler body, and a steam-water separator arranged on the other side of the boiler body. A control box is arranged on one side of the steam-water separator, a water supply system is arranged on the other side of the furnace body, an air duct pipeline is arranged at one end of the burner, an air supply fan is arranged at one end of the air duct pipeline, a base is arranged at the bottom of the furnace body, and the air supply fan is fixed to the base. According to the scheme, the problems that an existing steam boiler mostly adopts a boiler barrel structure, high-temperature steam is not prone to being discharged, explosion is prone to being caused, and safety is low are solved.

According to the header system of the coal-fired boiler and the coal-fired boiler, the thermal stress of the header can be improved, and the service life of the header can be prolonged. The header system of the coal-fired boiler comprises second headers, at least one first header and a plurality of sets of pipe rows, one end of each set of pipe rows penetrates through a boiler wall of the coal-fired boiler, and the other end of each set of pipe rows is connected with one second header; and the first header is connected with the plurality of second headers.

The utility model discloses a heat cyclic utilization type biomass steam boiler which comprises a base, a combustion chamber, a boiler body and a water tank, a scraper blade is movably connected in the combustion chamber, the upper end of the side, away from a feeding port, of the combustion chamber is connected with the water tank through a communicating pipe, and a connecting pipe is fixedly wound on the inner wall of the water tank. And one side of the top end of the water tank fixedly communicates with a second water inlet, an exhaust pipe communicating with the interior of the water tank is fixedly arranged on one side of the second water inlet, and an activated carbon filter screen plate is arranged in the exhaust pipe. The water heater has the advantages that smoke generated by combustion is conveyed into the connecting pipe through the communicating pipe and is coiled in the water tank through the connecting pipe, so that water in the water tank is heated by waste heat in the smoke, the heat utilization rate is improved, finally, the smoke is filtered and purified by the activated carbon filter screen plate and is exhausted from the exhaust pipe, and the environment is protected. And the situation that some unburnt impurities are doped in smoke to affect the environment is prevented.

The utility model discloses a fuel steam boiler, which belongs to the field of steam boilers, and comprises a boiler barrel, and a combustion chamber, a reversal chamber, a first smoke tube assembly, a smoke box and a second smoke tube assembly which are arranged in the boiler barrel, and a feed port and a smoke outlet are formed on the boiler barrel; one side of the reversal chamber is communicated with the first smoke pipe assembly, the other end of the first smoke pipe assembly is communicated with the smoke box, the other end of the smoke box is connected with the second smoke pipe assembly, and the other end of the second smoke pipe assembly is communicated with the smoke outlet. According to the fuel steam boiler, the secondary air inlets, the air blower and the induced draft fan are arranged on the left side and the right side of the hearth of the boiler barrel, so that combustibles can be fully burnt out, heat efficiency is improved, and emission of pollutants is reduced; and meanwhile, through the three-return-stroke design, a downstream combustion structure is formed, and the combustion efficiency and the heat transfer efficiency are greatly improved.

A reverse rapid coordinated control method based on the DCS system of a coal-fired generator set maintains the control logic structure of the DCS system, dynamically revising the control parameters and setpoints of the regulated objects to implement reverse regulation control logic. The setpoints for the main steam pressure on the turbine side and the boiler side are dynamically calculated based on the real-time main steam pressure deviation. The turbine and boiler side load commands are issued based on the nonlinear function output by the variable load ratios of the turbine and boiler sides. The setpoints for the primary air pressure and mill cylinder pressure are based on the nonlinear function output by the variable load command on the boiler side. The PID control parameters of the turbine and boiler main controls are functions related to the main steam pressure deviation, and the magnitude of the PID control parameters for the turbine and boiler main controls are opposite to each other. This system improves the K value of the unit, requires minimal investment, requires less maintenance, and has rapid returns.

At least one aspect of the present technology provides a self-contained treatment plant for converting organic and high-water waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.

The utility model relates to a natural gas steam boiler in the technical field of steam boilers. A supporting base used for supporting the steam boiler body is installed at the lower end of the steam boiler body, and a moving assembly facilitating moving of the supporting base is installed at the lower end of the middle of the supporting base. When the steam boiler body is moved, a hand wheel is rotated, a rotating rod drives a worm to rotate synchronously, a worm gear drives a reciprocating lead screw to rotate, lead screw nuts located at the left end and the right end of the reciprocating lead screw are far away from each other, the angle of two connecting rods is changed, a supporting plate is driven to move downwards, and universal wheels abut against the ground; and the hand wheel continues to rotate, and after the supporting legs are far away from the ground, the steam boiler body can be moved. And after the position of the steam boiler body is adjusted, the hand wheel is reversely rotated to enable the supporting legs to support the steam boiler body.

The utility model relates to the technical field of steam generators, in particular to a steam generator with a deoxidizing mechanism, which comprises a boiler body, a deoxidizing box is arranged on one side of the boiler body and comprises a deoxidizing tank arranged on one side of the boiler body, and a water inlet is fixedly connected to one end, far away from the boiler body, of the deoxidizing tank. The top end of the deoxidizing tank is fixedly connected with an air outlet, and the end, away from the water inlet, of the deoxidizing tank is fixedly connected with a water outlet which is fixedly connected with one side of the boiler body. The boiler body is matched with the deoxidizing box, water is guided into the lower cavity through the water inlet, then the water is sprayed to the surface of the ultrasonic vibration plate from the interior of the lower cavity through the water spraying pipe, liquid flowing is accelerated while deoxidizing treatment is conducted on the water through the water spraying pipe, and the deoxidizing efficiency is improved; and therefore, the falling water flow flows into the water gathering groove through the drainage groove and is finally transferred into the boiler body through the water outlet.

The utility model belongs to the technical field of steam generators with ultra-low nitrogen emission, and discloses a steam generator with ultra-low nitrogen emission, which comprises a base, a box body arranged at the top end of the base, a structural groove arranged on one side of the box body, a pair of protective doors hinged to the box body through hinges at the notch position of the structural groove, and a detection table arranged at the top end of the box body, a detection box is arranged at the top end of the detection table, a detection groove is formed in the top end of the detection box, a gas detector is arranged at the top end of the detection groove, and a pipeline is arranged in the detection groove. Through cooperative use of the gas detector, the detection groove and the detection box, flue gas discharged by the steam generator can be conveniently detected, it is effectively ensured that when ammonia escape occurs, related personnel can know and take corresponding solutions at the first time, and the environment is effectively protected; and through cooperative use of the solar photovoltaic panel, the power supply groove and the storage battery, electric power can be stably and effectively provided for the gas detector.

The utility model provides a system configuration for a coal power unit to adapt to deep peak regulation flexible operation, which is characterized in that a newly-added external steam cooler is arranged at an existing final-stage high-pressure water supply outlet of a water supply pipeline, and a steam side inlet of the newly-added external steam cooler is connected with a pressurization module; steam lower than the target steam extraction pressure grade is introduced into an inlet of the pressurization module, and a steam side outlet of the newly-added external steam cooler communicates with a steam inlet of an existing final-stage high-pressure heater; the steam lower than the target steam extraction pressure grade is pressurized by the pressurization module, firstly enters the newly-added external steam cooler to heat the feed water, and then enters the existing final-stage high-pressure heater to heat the feed water, so that the temperature of the feed water entering the furnace of the unit is increased; and meanwhile, a certain feed water pressure is maintained, so that feed water at an outlet of the economizer is kept at a certain supercooling degree, dry-state operation of the boiler is maintained under the deep peak regulation working condition, the hydrodynamic stability is maintained, and the denitration system is continuously and stably put into operation.

The application discloses a smoke path and water path double-return, countercurrent ladder type heat exchange energy-saving multi-purpose boiler, which comprises a water outlet tank arranged in a box body and connected with a water outlet; a water return tank arranged in the box body and connected with a water return inlet, wherein the water return tank is arranged below the water outlet tank; a vertical plate connected with one end of the water return tank, wherein the vertical plate and the water outlet tank form a smoke inlet; the water outlet tank, the vertical plate and the water return tank divide the box body into a combustion chamber and a flue gas chamber; a plurality of vertical pipes are connected between the water outlet tank and the water return tank, and the vertical pipes are arranged on one side of the combustion chamber; a plurality of bend pipes are connected between the water outlet tank and the water return tank, and the plurality of bend pipes are arranged on one side of the flue gas chamber; the countercurrent mode of the flue gas and the liquid in the bend pipes can accelerate the liquid flow and effectively slow down the flue gas flow speed; the accelerated liquid flow improves the heat exchange efficiency, and the slowed down flue gas flow speed prolongs the heat exchange time, which is helpful to further improve the heat exchange efficiency.

Provided is a boiler capable of heating a fluid using a heating mechanism provided with a heating element inside a container, and capable of efficiently using heat generated by the heating element and heating the fluid appropriately according to various conditions. The boiler is provided with a heating element and a container provided with the heating element inside and capable of being filled with a gas having a specific heat capacity higher than that of air inside, and heats a fluid using heat generated by the heating element, wherein the boiler is provided with a controller that controls the amount of heat generated by the heating element in a state where the gas is supplied to the container.

The present invention relates to the field of electric power, and specifically to a thermal peak-shaving system for a new type of thermal power plant complementary to light and coal. The oil pipeline between the oil outlet and the oil inlet of the trough-type heat collecting device is sequentially provided with a hot oil heat storage tank, a high-temperature oil-water heat exchanger, a low-temperature oil-water heat exchanger, a cold oil heat storage tank and an oil transfer pump along the flow direction of the internal heating oil. The condensate main pipe at the bottom of the condenser is provided with a condensate pump. The condensate main pipe at the outlet of the condensate pump is connected to the water side inlet of the high-temperature oil-water heat exchanger through the water inlet pipe of the high-temperature oil-water heat exchanger. The heat is supplemented for the heating extraction steam through an external heat source, breaking the heat user's demand for the heating extraction steam parameters, limiting the problem of variable load operation of the cogeneration unit, thereby enhancing the peak-shaving flexibility of the unit. This system can also adopt different operation modes one and two according to the actual peak-shaving demand of the power grid, thereby realizing a flexible operation mode integrating heating, power generation and peak-shaving.

The utility model provides a steam generating pipeline of a steam generator, and belongs to the technical field of heat energy engineering. The technical problems of low gas combustion utilization rate, low heating efficiency and the like in the prior art are solved. The steam generation pipeline of the steam generation furnace comprises an axial coil pipe which extends in the spiral axial direction, at least one end of the axial coil pipe is provided with a radial coil pipe set, one end of the axial coil pipe and one end of the radial coil pipe set are connected into a whole, the radial coil pipe set comprises a plurality of radial coil pipes distributed in the axial direction, and the radial coil pipes are arranged in the radial coil pipe set. And the inner end of one radial coil pipe of two axially adjacent radial coil pipes is connected with the outer end of the other radial coil pipe into a whole. The utility model has the advantages of high heating efficiency, high gas utilization rate, lower operation cost, long service life and the like, and is provided with a monitoring mechanism.

The invention provides a gas dilution combustion steam boiler. The gas dilution combustion steam boiler comprises a heat storage oxidation device; the mixing fan is used for inputting gas mixed with air into the heat storage oxidation device; a conveying pipe fitting is arranged between the mixing fan and the heat storage oxidation device, the conveying assembly is provided with the preheating assembly, a heat dissipation part is arranged in the preheating assembly, and the air inlet end of the heat dissipation part is connected with the upper portion of a combustion chamber of the heat storage oxidation device; the bottom of the steam boiler is connected with the air outlet end of the heat dissipation part; the air inlet cover is arranged at the air inlet of the mixing fan, and a filter plate is arranged in the air inlet cover; and the cleaning mechanism is used for cleaning the side, deviating from the air inlet of the mixing fan, of the filter plate and the filter holes of the filter plate. High-temperature airflow can be reutilized, and the heat utilization effect is effectively improved. And through the arrangement of the cleaning mechanism and the lifting mechanism, automatic cleaning of the filter plate is realized, and blockage is avoided.

The utility model discloses a horizontal water pipe gas-steam boiler which comprises a boiler body, a burner, an energy saver, a lower boiler barrel, a heat exchange pipe assembly and an upper boiler barrel, a hearth is arranged in the boiler body, the burner is used for jetting flames into the hearth, the hearth is provided with a smoke outlet, and the smoke outlet is connected with the energy saver; the two ends of the heat exchange pipe assembly communicate with the upper boiler barrel and the lower boiler barrel correspondingly, the heat exchange pipe assembly is arranged in the hearth, the heat exchange pipe assembly divides the inner space of the hearth into a bent rotary flue, and the rotary flue communicates with the smoke outlet. The heat exchange pipe assembly is directly arranged in the hearth, the heat exchange pipe assembly divides the inner space of the hearth into the bent rotary flue, high-temperature flames and high-temperature smoke generated by the combustor can directly act on the heat exchange pipe assembly, water in the heat exchange pipe assembly is heated in a radiation heat transfer and convective heat transfer mode, and the heat exchange efficiency is improved. And the heat exchange tube assembly can quickly generate steam.

The invention relates to a coupling cold storage condensate water recooling thermal power generating unit system and a control system thereof. A boiler generates high-temperature and high-pressure steam to drive a steam turbine to rotate and drive a generator to generate electricity, and the high-temperature and high-pressure steam passes through the steam turbine to become dead steam which enters a condenser to be condensed into water; part of electricity generated by the generator drives the refrigerator to refrigerate, and cold energy is stored through the cold storage tank. The whole structure of the control system is composed of five core parts, namely a refrigerating device, a cold storage tank, a special variable frequency pump set, a spraying device and an intelligent control system, and the working process of the control system comprises the steps that part of condensation water is pumped at an inlet of a condensation water pump, and a condensation water cooling loop is newly built; a refrigerator is driven by off-peak electricity to cool the condensed water, and the condensed water is stored in a large cold storage tank; in the load peak or electricity price peak period, low-temperature condensed water is injected into the condenser in an atomization spraying mode through the variable frequency pump set, the vacuum degree of the condenser is improved, and therefore the power generation power is improved.

The present patent application relates to a superheated steam dryer with depressurized air flow for use in the agricultural, commercial and residential fields. The application of cleaning surfaces with steam has been relatively mature in the market, but the system / equipment used has limitations in design, resulting in the inability to make full use of the heat available by generating steam, mainly superheated steam.

The utility model provides a skid-mounted boiler combination device heated by two energy sources of electricity and fuel gas, and relates to the technical field of skid-mounted steam boilers. In the skid-mounted boiler combination device heated by two energy sources of electricity and fuel gas, a skid-mounted steam-water separation system is simultaneously connected with skid-mounted wet steam equipment, skid-mounted superheated steam equipment and a skid-mounted sewage heat exchange system; the skid-mounted gas supply control system, the skid-mounted power supply control system and the skid-mounted heat output control system are respectively connected with the skid-mounted wet steam equipment and the skid-mounted superheated steam equipment at the same time; the skid-mounted flue gas heat exchange system is simultaneously connected with the skid-mounted wet steam equipment, the skid-mounted superheated steam equipment, the skid-mounted water supply control system and the deaerator, and the skid-mounted superheated steam equipment is connected with a heat user. According to the combined device, natural gas and electricity can be input into one device at the same time or in a time-sharing mode to prepare high-temperature and high-pressure steam. When the combined device is installed on an oil extraction site, large-area land of the oil extraction site is prevented from being occupied.

The utility model belongs to the technical field of boilers, and particularly relates to a biomass steam boiler which comprises a base, a biomass steam boiler body is installed on the base, and an anti-scalding assembly is arranged on the biomass steam boiler body. The anti-scalding assembly comprises a first shell and a second shell, four through holes are formed in the first shell, four through blocks are installed at one end of the second shell, clamping grooves are formed in one ends of the four through blocks, two fixing plates are installed at one end of the first shell, and a winding roller is rotationally connected into the two fixing plates; and two steel wire ropes are mounted on the outer wall of the winding roller. Through the arrangement of the anti-scald assembly, the phenomenon that the skin of a worker is scalded due to the fact that the temperature of the outer wall of the boiler rises due to heat generated in the combustion process of biomass fuel can be avoided, the use safety is improved, the first shell and the second shell can be conveniently and rapidly disassembled and assembled for use, and the flexibility is improved.

The utility model discloses a steam boiler which comprises a burner, a boiler body is arranged on one side of the burner, a hearth is arranged in the boiler body, a flue connected with the boiler body is arranged on one side of the upper end of the boiler body, and an energy saver and a condenser which are connected with the flue are sequentially arranged at the other end, away from the boiler body, of the flue. The energy-saving boiler has the advantages that the temperature of generated steam is high, compared with an existing boiler, the heat efficiency is higher, pollution to the environment is small, smoke coming out of the energy-saving device enters the condenser, normal-temperature water in the condenser exchanges heat with the smoke through water pump circulation, the smoke temperature is further lowered, the heat efficiency of the boiler is improved, and energy is saved. Precipitated floccules at the bottom of the lower boiler barrel are regularly discharged through the blow-off pipe, and the service life of the boiler is prolonged.

The utility model provides an operation system configuration of a coal power unit based on feed water supplementary heating, which is characterized in that on the basis of an existing boiler feed water heating system, a newly-added final-stage high-pressure heater and a newly-added external steam cooler are additionally arranged on a water supply pipeline, and a steam side inlet of the newly-added external steam cooler is connected with a pressurization module; steam lower than the target steam extraction pressure grade is introduced into an inlet of the pressurization module, and a steam side outlet of the newly-added external steam cooler is connected with a steam inlet of the newly-added final-stage high-pressure heater; supplementary heating is conducted on feed water heated by an existing final-stage high-pressure heater at the position of a newly-added external steam cooler and in the newly-added final-stage high-pressure heater, so that the temperature of feed water entering a furnace of a unit under the deep peak regulation working condition is increased, and meanwhile certain feed water pressure is maintained to enable the feed water at an outlet of a coal economizer to be kept at a certain supercooling degree; dry-state operation of the boiler is maintained under the deep peak regulation working condition, the hydrodynamic stability is kept, and the denitration system is continuously and stably put into operation.

This utility model belongs to the technical field of energy utilization, and specifically proposes a steam supply system for comprehensive energy utilization, including: an air source heat pump, a biomass boiler (8), a flash evaporation device (9), and a steam compressor. In this application, by coupling the air source heat pump with biomass, the ambient temperature feedwater can be heated by the air source heat pump and supplied to the biomass boiler (8). The biomass boiler (8) uses the heated water to prepare steam, which reduces energy consumption compared to directly heating the ambient temperature feedwater to prepare steam. When the biomass boiler (8) is not in use or lacks biomass fuel, the high temperature water prepared by the air source heat pump can be supplied to the flash evaporation device (9). The low temperature and low pressure steam prepared by the flash evaporation device (9) is pressurized and heated by the steam compressor and then transported to the external steam supply pipeline (23) to provide steam to users, which makes reasonable use of biomass fuel and meets the steam supply requirements.