32results about How to "Improve steam parameters" patented technology

The invention discloses a thermal waste water treatment apparatus employing a heat pump. The apparatus comprises a waste water evaporator, a heat pump and a waste water circulating pump; and the waste water evaporator comprises a waste water deoxidizing zone, a saturated vapor zone, a demister, a high concentration waste water stagnation zone, a heat exchange zone, a drain storage zone and a highconcentration waste water distribution zone from top to bottom. In addition, the invention also discloses a thermal waste water treatment method employing the heat pump. Waste water is first evaporated into water vapor; the heat pump is used to increase steam parameters, and the steam is supplied to the heat exchange zone and cools the high concentration waste water into qualified condensed water, which is drained outside; the high concentration waste water absorbs vaporization latent heat of the steam with high parameters, then part of the high concentration waste water evaporates into watervapor; so a heat circulation is completed. According to the invention heat is only needed during a starting process; at other time, the heat circulation within the apparatus is utilized to reduce energy consumption of the apparatus. The apparatus of the invention is simple, has small land occupation, low costs; and the quality of condensed water at a waste water outlet level reaches national highstandard.

The invention discloses a combustion chamber used for garbage incineration, a garbage incineration boiler and a working method of the garbage incineration boiler, belongs to a garbage incineration device and a working method thereof, and provides a combustion chamber capable of preventing superheater corrosion, high in reliability and high in incineration efficiency, a garbage incineration boilerand a working method of the garbage incineration boiler. The combustion chamber is formed by bonding phase-change energy storage refractory bricks, mortar and an outer wall from inside to outside; heat exchange pipes are arranged at the combined position of the outer wall of the mortar; the combustion chamber is divided into an upper part and a lower part, a hearth evaporation heated face is located on the upper part of the combustion chamber, a second-stage superheater is located on the lower part of the combustion chamber, and a first evaporation heated face, a first-stage superheater, a second evaporation heated face and a coal economizer are arranged in a flue gas channel from top to bottom; and a boiler barrel is connected with the hearth evaporation heated face, the first evaporationheated face, the second evaporation heated face, the first-stage superheater, the second-stage superheater, a steam turbine, a condenser, a degassing device and the coal economizer. The combustion chamber is mainly used for garbage incineration.

The invention discloses a method and a device, which are used for generating superheated steam from high-salt boiler feed water through stage evaporation, and belongs to the technical field of boiler equipment. According to the method, a boiler drum is divided into a net section and a salt section; the lower part of a salt-section cyclone is connected with the salt section to achieve discharging; the bottom end of the salt-section cyclone is connected with a salt-section down pipe, the salt-section down pipe is connected with a salt-section distribution header, the other end of a salt-section riser pipe is connected with the middle of the salt-section cyclone, a cavity body in the upper part of the salt-section cyclone is connected with a corrugated plate, the top of the salt-section cyclone is connected with a salt-section steam outlet, and the salt-section steam outlet is connected with a pipeline at one end of a super heater; the net-section distribution header is connected with a net-section riser pipe; a salt-section communication pipe is used for communicating a net-section steam drum with the salt-section cyclone. The method has the benefits that the requirement on the salt content of boiler water in a heavy oil thermal recovery boiler is greatly lowered on the premise of guaranteeing the steam quality, moderately treated heavy oil recovery water can be reused, heavy oil development water can be recycled, the clear water consumption and the sewage discharge are reduced, the environment is protected, and the heavy oil thermal recovery cost is reduced.

The invention discloses a device and a process for generating power through efficient recovery of waste heat of sintered ores and belongs to the technical field of cogeneration. The device comprises a sintered ore cooling system, a waste heat power generating system and a smoke system, wherein the sintered ore cooling system and the waste heat cycling power generating system are connected through the smoke system to form a loop. The process comprises the steps of 1), cooling of sintered ores; 2) the smoke system; and 3) waste heat power generating. The device and the process for generating power through waste heat have the advantages that discharged waste heat is used fully during cooling of sintered ores, the electric energy production is improved significantly, the power rate of the system is reduced significantly, and the energy-saving effect is significant.

The invention discloses a circulating fluidized bed boiler with a high bed temperature and with a steam parameter of 700 DEG C and above. The boiler comprises an air compartment, an air distributor, a combustion chamber, a primary air system, a second air system, a horizontal flue, a plurality of cyclone separators, a plurality of external heat exchangers and a rear flue. The contraction ratio of the lower part of the combustion chamber along the depth direction is 0.22-0.48. A flue gas damper is arranged in the rear flue. The rear flue contains at least two parallel flues. A low-temperature superheater is arranged in one parallel flue. A low-temperature reheater is arranged in the other parallel flue. A medium-temperature superheater is arranged in one external heat exchanger. A high-temperature reheater is arranged in one external heat exchanger. A high-temperature superheater is arranged in the combustion chamber. The boiler can effectively raise the heat-transfer intensity inside the combustion chamber, the bed temperature can reach 950 DEG C and above, the steam parameter can reach 700 DEG C and above, and therefore the aims of raising power generating efficiency of coal power units and reducing pollutant discharge are achieved, and long and high-efficient running of the device can be guaranteed.

The invention discloses a biological circulation fluidized bed combustion method and a biological fueled circulation fluidized bed boiler; the fluidized bed boiler comprises a boiler cavity, a clutch,a material refeeder, a tail chimney, wherein, the boiler cavity is provided with a superheater high temperature section, and the tail chimney is provided with a superheater low temperature section. Through the arrangement of heating surfaces of the boiler cavity and the tail chimney and other auxiliary measures, the temperature of the upper part of the boiler cavity is controlled at 550 to 800 DEG C, the outlet steam temperature of the tail heating surface is controlled at 350 to 400 DEG C, so as to solve the problem that: the temperature distribution of the boiler cavity is unreasonable, andthe material concentration of the lower part of the boiler cavity is too low when the biological fuels are combusted in the circulation fluidized bed based on the stable fire, complete consumption ofbiological fuels , so that the temperature distribution in the boiler cavity tends to be equalized and the boiler cavity can be prevented from clinkering, and the accumulated ashes on the heating surfaces can also be prevented from being clinkered, furthermore, the boiler output capacity can be ensured, and a high steam parameter can also be achieved to ensure the generation efficiency.

The invention discloses a groove type solar direct stream heat collecting pipe which is used for a solar thermal power generation system. The heat collecting pipe can directly receive solar focusing radiation to heat working medium water in the pipe so as to generate steam and comprises an absorption pipe, a glass casing pipe and connection devices at the two ends of the heat collecting pipe. A heat absorption pipe is composed of a stainless steel pipe, a selective absorption coating on the surface of the outer wall of the heat absorption pipe and a filling structure in the heat absorption pipe. The filling structure is an annular metal foam layer with an axial spiral groove, and the thickness of the layer gradually reduces in the flowing direction of a work medium. A vacuum layer is arranged between the absorption pipe and the glass casing pipe. The connection devices at the two ends of the heat collecting pipe are made of flanges and corrugate pipes. A glass-metal sealing connecting opening is processed in a crumpling mode. According to the groove type solar direct stream heat collecting pipe, on one hand, radial gas-liquid two-phase flow type reconstruction with gas inside and liquid outside in the absorption pipe is achieved, the fact that circumferential heat stress distribution of the absorption pipe is uneven is changed, and the problem of induction invalidation of heat stress is solved; on the other hand, local residual stress in the heat sealed technology can be reduced, and the problem of invalidation of end portion sealing connecting of the glass casing pipe is solved. The groove type solar direct stream heat collecting pipe can obviously improve the reliability and stability of the solar direct stream heat collecting pipe.

A sintering circulating cooling waste heat cascade recovery power generation system and a process thereof belong to the sintering waste heat utilization technology field. The system comprises a sintering circulating cooling machine, a windward chamber, a leeward chamber, a heat exchanger, a fan, a waste heat boiler, a steam bag, a superheater, an evaporator, an oxygen remover, a steam turbine, a generator, a condenser, a condensate pump and a water supply pump. The totally closed system is adopted to carry out subsection cooling and cascade recovery of waste heat of sinter, thereby recoveringthe sensible heat of the sinter to the maximum extent; the gradual increase of the temperature of cooling air can reduce the heat exchange temperature difference with the sinter; in order to not affect the cooling effect of the sinter, the system adopts the combined mode of the sub-cycle of the cooling air and the major cycle to absorb the sensible heat of the sinter, thereby improving the waste heat recovery efficiency. Compared with the prior art, the system and the process can extremely recover the waste heat of the sinter, improve the temperature of steam which is used for power generation under the premise of not increasing the total circulating air volume, increase the waste heat power generation amount and have great economic effects.