31results about How to "Solve the problem of high temperature corrosion" patented technology

Provided is a boiler water wall air film protection device. A plurality of tuyeres are arranged obliquely in an upstream boiler wall of high-temperature flame and flue gas coal dust airflow in the boiler water wall area and each tuyere communicate with an air flue arranged on the outer side of a hearth. Air is jetted into the hearth through the tuyeres, airflow forms an air curtain between the downstream portion of the flame and high-temperature flue gas flow and a water wall along the flue gas and the air curtain is towards the water wall under pushing of the flame and the high-temperature flue gas to form an air isolation layer, on the one hand, the action of the air curtain can push the wall-eroding coal dust airflow or flame to the center of the cross section of the hearth, so that erosive wear and corrosion to the water wall from the wall-eroding coal dust airflow or flame are avoided, and on the other hand, the air curtain is turned to the downstream water wall area under the action of the upstream high-temperature flame and flue gas, a layer of oxidizing atmosphere protection film is formed on the downstream water wall area, and the problem of high-temperature corrosion of the water wall is solved fundamentally.

The invention relates to a side wall water-cooling wall adherence protecting device based on horizontal shade separation. The device comprises wall-adhering air nozzles arranged on two sides of a front wall and a back wall of a fired coal power station boiler respectively, wherein burners are arranged between the wall-adhering air nozzles on two sides of the front and back walls. Each burner comprises an outermost burner adjacent to the wall-adhering air nozzles and other several middle regional burners; a window-shades type pulverized coal concentrator is arranged in a primary air pipe of the outermost burner, the primary air pipe of the outermost burner is divided into a concentrated pulverized coal nozzle and a light pulverized coal nozzle, the concentrated pulverized coal nozzle is arranged on the side, close to the middle regional burner, along the width direction of the boiler, the light pulverized coal nozzle is arranged on the side, close to the left or right side wall of the boiler, a pulverized coal pipeline of the outermost burner is introduced from a horizontal height direction of the primary air pipe and is connected to the primary air pipe through a bend; and air distribution adjustment can be carried out on the concentrated pulverized coal nozzle and the light pulverized coal nozzle through air valve baffle plates arranged independently. The device can improve a wall adherence atmosphere of the side wall water-cooling wall obviously.

The invention provides a waste incineration power generation device capable of improving main steam parameters. The waste incineration power generation device comprises a waste heat boiler, a steam pocket, a coal-fired boiler and a steam turbine, wherein the waste heat boiler is provided with a low-temperature heating surface for heating feedwater; the feedwater is separated into saturated water and saturated water steam through the steam pocket, and the saturated water returns to the low-temperature heating surface of the waste heat boiler; the coal-fired boiler is provided with a high-temperature heating surface, and the saturated water vapor separated from the steam pocket is overheated at the high-temperature heating surface; and the overheated main steam enters a high-pressure cylinder to work and drives a generator to generate electricity, the waste steam discharged from the high-pressure cylinder returns to the high-temperature heating surface of the coal-fired boiler for reheating, the reheating steam enters a low-pressure cylinder to work and drives the generator to generate electricity, and the waste steam discharged from the low-pressure cylinder enters a water supply circulation unit to be converted into the feedwater again. According to the waste incineration power generation device capable of improving the main steam parameters, the main steam parameters of wasteincineration power generation can be improved, and the intermediate reheating technology is used, so that the generating capacity of the steam turbine and the economic benefits of a incineration powerplant are improved.

The invention relates to a slag blocking preventing type wall-attached air device based on air staged combustion. The slag blocking preventing type wall-attached air device comprises a wall-attached air nozzle consisting of a jet flow air nozzle and a protective air nozzle; the jet flow air nozzle faces the air flow jet direction of a pulverized coal combustor, and the protective air nozzle is arranged back to the air flow jet direction of the pulverized coal combustor; the jet flow air nozzle and the protective air nozzle are separated by a partition plate; and a coke poking device is arranged in the jet flow air nozzle and can push coke slag adhered to the jet flow air nozzle into a hearth. According to the slag blocking preventing type wall-attached air device, air staged combustion isrealized, and NOx generated by combustion is reduced advantageously; protective air forms an air film at the wall-attached position of a water-cooled wall, and the atmosphere at the wall-attached position of the water-cooled wall is improved. Under the action of jet flow air and protective air, the problem of high-temperature corrosion of the boiler water-cooled wall can be solved. Meanwhile, slagbonding or burning loss of the nozzle due to the fact that coke slag particles adhere to the wall-attached air nozzle in the combustion process can be prevented.

The invention discloses a power generation system of an urban garbage pyrolysis and gasification coupled coal-fired power plant, wherein the system comprises a boiler; the boiler drives an electric generator to generate electricity by a steam turbine; the system is characterized by also including a garbage low-temperature pyrolysis system and a garbage drying system. The invention provides the power generation system of the urban garbage pyrolysis and gasification coupled coal-fired power plant. The low-temperature pyrolysis system is used for pyrolysis of the urban living garbage at low temperature, HCl in the urban living garbage can be volatilized and removed, the generation amount of dioxin is reduced from the source, the high temperature corrosion problem of HCl generated in the process of urban living garbage incineration to a coal-fired boiler heated surface is solved, and the safety of heated surfaces of large coal-fired units is ensured.

The invention provides a furnace tube fixed type gas-heating regeneration furnace for powdered activated carbon. The regeneration furnace comprises a regeneration furnace body, a regeneration furnacestirring device, a powdered activated carbon recovery device, an exhaust gas emission system and a gas heating system, wherein the regeneration furnace body stirring device is arranged in the regeneration furnace body; an outlet of the regeneration furnace body is connected to the powdered activated carbon recovery device through a regeneration waste gas flue and a powdered activated carbon material outlet of the recovery device; the regeneration furnace body is connected with the exhaust gas emission system through a flue branch pipe; the gas heating system 5 is arranged in the regeneration furnace body; and the upper side of the regeneration furnace body is connected with the powdered activated carbon recovery device through the regeneration waste gas flue. According to the invention, afurnace tube fixed type structure is adopted, only the stirring shaft is required to perform rotational motion, and required rotation power is low; fixing equipment for a furnace tube of the furnace body has characteristics of simple structure and reliable installation; and the furnace is long in service life and convenient in maintenance.

The invention discloses a novel anti-corrosion noise-reduction chimney for a ship. The novel anti-corrosion noise-reduction chimney comprises one chimney body used for exhausting waste gas, a conversion device arranged at the central axis position of the chimney body and used for converting kinetic energy of the waste gas into electric energy, an internal cooling device arranged on the inner wallof the chimney body and used for reducing internal temperature and smoke dust of the chimney body, a silencing device used for reducing noise of the chimney body, an external cooling device arranged on the outer wall of the chimney body, a heat insulation layer arranged on the surface of the external cooling device, a circulating and purifying device used for purifying and recycling cooling liquid, and a controller. According to the novel anti-corrosion noise-reduction chimney for the ship, the internal temperature and the external temperature of the chimney body are effectively reduced through multi-stage cooling, and the temperature of the chimney body is visually controlled and adjusted in real time through a detection control system, so that the problem of high-temperature corrosion iseffectively solved; and by arranging the silencing device, the exhaust noise of the chimney body is reduced, energy of the exhausted flue gas is fully recycled, and harmful substances and the smoke dust in waste gas can be effectively removed by changing a cooling liquid medium.

The invention discloses an opposed firing boiler. The opposed firing boiler comprises a hearth surrounded by a boiler left-side wall, a boiler right-side wall, a boiler front wall and a boiler rear wall. A left-side wall burner is arranged on the center line of the boiler left-side wall in the height direction of the hearth, a right-side burner is arranged on the center line of the boiler right-side wall in the height direction of the hearth, several front wall burners are arranged on the boiler front wall, and several rear wall burners are arranged on the boiler rear wall; and a bellow for providing secondary air and over-fire air for the hearth is arranged at the peripheries of the boiler left-side wall, the boiler right-side wall, the boiler front wall and the boiler rear wall. According to the structure of the opposed firing boiler, on the basis that an original pulverized coal firing mode is not influenced, the problem of high temperature corrosion to side wall water cooling wallsis thoroughly solved.

The invention relates to the field of urban household waste incineration, in particular to a high-temperature and high-pressure waste incineration pi type boiler. The boiler comprises a water-coolingcombustion chamber, a first channel, a first and second channel connecting channel, a second channel, a third channel, a horizontal channel and a fourth channel, wherein the first channel, the first and second channel connecting channel, the second channel, the third channel, the horizontal channel and the fourth channel are arranged in the flue gas flowing direction in sequence, wherein a platensuperheater is arranged on the upper portion of the second channel, and the outer portion of the platen superheater is coated with high-heat-conduction plastic refractory; an evaporation protector I is arranged on the lower portion of the third channel; the horizontal channel is internally provided with an evaporation protector II, a high-temperature superheater, an intermediate-temperature superheater and a low-temperature superheater in sequence; and an economizer is arranged in the fourth channel. According to the high-temperature and high-pressure waste incineration pi type boiler, the platen superheater is coated with the high-heat-conduction plastic refractory to isolate contact between a pipe and flue gas, and the problem of high-temperature corrosion is solved thoroughly. The platen superheater can heat steam to 540 DEG C. Accordingly, the thermal efficiency of a matched waste incineration power plant steam turbine generator unit system is improved to 34%.

The invention belongs to the technical field of combustion equipment and particularly relates to a medium-temperature sub-high-pressure reheating waste incineration boiler provided with a sound wave temperature measurement denitration system. The boiler comprises a fire grate, a furnace chamber, a horizontal flue and a tail flue. The furnace chamber comprises a hearth, a burnout chamber and threeflues which are connected in sequence; and the horizontal flue and the tail flue are sequentially arranged behind the furnace chamber. A plurality of water cooling screens are arranged at an upper part of the hearth; a plurality of partition wall water cooling walls are arranged in the burnout chamber; a high-temperature reheater, a high-temperature superheater, a low-temperature reheater and a medium-temperature superheater I are sequentially arranged in the three flues from bottom to top; a medium-temperature superheater II and a low-temperature superheater I are arranged in the horizontal flue; and the tail flue is sequentially provided with a low-temperature superheater II and an economizer from top to bottom. The waste incineration power generation heat efficiency can be effectively improved, the steam consumption rate is reduced, nitrogen oxide emission is efficiently controlled, and long-term safe and stable operation of the water cooling walls, the reheaters and the superheaters is guaranteed.

A new energy generator is composed of a plasma generator assembly, an electromagnetic system, water, electricity, gas and the like. A Faraday channel magnetic pole and an electrode are cooled by circulating water, so that the high temperature of about 3650 DEG C is reduced to the temperature of water vapor, about 200 DEG C, and the noise of the temperature on the magnetic performance is reduced to the minimum. The cooling problem of a Faraday channel magnetic pole is solved, and steam power is generated for a turbine to drive a generator to generate electricity. Electric energy is used as auxiliary fuel, water is used as main fuel, and the plasma conductivity in magnetohydrodynamic power generation is increased. Water is used as a new energy source. And water is decomposed into fuel for use, so that economic benefits and social benefits are incomparable.

The invention discloses a sintering trolley, relating to the field of technical equipment of a metallurgical machinery sintering trolley. The sintering trolley comprises a trolley body, wherein two sides above the trolley body are respectively fixedly connected with a lower breast board; an L-shaped fire damper board made of a heat-resistant anticorrosion material is arranged between the trolley body and each lower breast board respectively; and each L-shaped fire damper board comprises a longitudinal section and a transverse section, the lower end of the longitudinal section is fixedly connected with the outer end of the transverse section, and the inner end of the transverse section is arranged between the trolley body and the lower breast boards. After the fire damper boards are installed, the overflow flame of an igniter can not be directly sprayed on the trolley body and wheels, and the flanges of the fire damper boards are upward to strengthen the effect of blocking flame of the igniter, thereby reducing the high temperature corrosion to which the trolley body and the wheels are subject when the sintering trolley is in use and prolonging the service life.