40results about How to "Improve drying output" patented technology

The invention discloses a coal powder combustion system used in high-moisture type coal oxygen-enriched combustion. With the combustion system, a boiler can be switched between two modes, which are an air combustion mode and an oxygen-enriched combustion mode. According to the system, coal powder is prepared by using a fan coal-mill (4); a blower (11) is started, and the coal powder is delivered in a dry state by using a mixed gas of high-temperature flue gas, low-temperature flue gas and air, such that the combustion system is in an air combustion state. The blower (11) is stopped, and an oxygen producing apparatus (15) is started; the coal powder is delivered in a dry state by using a mixed gas of high-temperature flue gas and low-temperature flue gas, such that the combustion system is in an oxygen-enriched combustion state. Oxygen from the oxygen producing apparatus (15) is divided into two parts. One part is mixed with recycled low-temperature flue gas, and the mixed gas is delivered into a furnace as secondary gas flow. The other part with a form of pure oxygen is delivered into the furnace through a combusting apparatus. Therefore, oxygen for coal powder combustion can be supplemented.

The invention provides an adjustable feed water heat regenerative system for a turbo generator unit, which comprises a high pressure cylinder of a steam turbine, a final-stage extraction opening, a final-stage feed water heater, a steam extraction pipe and a regulating valve, wherein the final-stage extraction opening is additionally arranged on the high pressure cylinder; the steam extraction pressure of the final-stage extraction opening is much higher than the common highest extraction pressure; additionally extracted steam is used as a heat source of the final-stage feed water heater; the steam extraction pipe is connected with the final-stage extraction opening and the final-stage feed water heater; and the regulating valve is arranged on the steam extraction pipe. Part of steam which does work is guided to the feed water heater through the final-stage steam extraction pipe so as to further heat feed water of a boiler. The heat regenerative system provided by the invention is an elastic heat regenerative system. The temperature of the feed water can be maintained or changed under the variable load condition of the unit, so that the environmental friendliness, the economy and the safety of the unit are improved and the frequency modulation characteristic is perfected.

The invention discloses a boiler powder generation system for burning lignite in a power station gas duct and cooling tower machine, which relates to a boiler powder generation system. The aim of the invention is to solve the problem that lignite in a bitumite-combusting boiler in the conventional thermal power generation causes a great safety hazards. An outlet end of a first pipe is communicated with a gas duct and cooling tower through a dust collector for electrical appliances and a draught fan in turn; the inlet end of a cold boiler gas duct is communicated with the first pipe; the communication part of the cold boiler gas duct and the first pipe is positioned between the draught fan and the gas duct and cooling tower; a cold boiler gas insulating baffle plate and a cold boiler gas regulating baffle plate are arranged from the inlet end of the cold boiler gas duct to the outlet of the cold boiler gas duct in turn; the outlet end of the cold boiler gas duct is communicated with an inlet air duct; the outlet end of the inlet air duct is communicated with the inlet end of a primary fan; the outlet end of the primary fan is communicated with the inlet end of a second pipe; and the outlet end of the second pipe is communicated with the cold end of an air preheater. The invention is used in technology for burning lignite in the power station gas duct and cooling tower machine.

The invention discloses a system for improving the drying capacity of a bin and feeder coal pulverizing system when a boiler changes coal types and relates to a system for improving the drying capacity of a coal pulverizing system. The invention aims at solving the problem that boilers adopting the bin and feeder coal pulverizing system change the coal types in thermal power enterprises, in particular to the problems of safety and economy of boiler operation in the lignite-bleeding burning process. A high-temperature coal economizer manhole is communicated with a first warm air isolating door air inlet and a second warm air isolating door air outlet by a flue gas pipeline of the system; and a flue gas isolating door and a flue gas adjusting door are sequentially arranged on the flue gas pipeline according to the flowing direction of mediums. The system disclosed by the invention has the advantages of low reforming cost, low operation and maintenance cost, reliability in operation and capability of operating for a long time. The system is used for reforming the coal pulverizing system when the boiler adopting the bin and feeder coal pulverizing system changes the coal types.

The invention relates to a process for drying a glass fiber strand by using hot blast air and microwave, which comprises the following steps: (a) temperature-raising time period: the setting temperature of a drying oven during the temperature-raising time period is 85-115DEG C, the time is 1-2.5hours and the microwave power density is 0-4kW / m<3>; (b) water-pumping time period: the setting temperature of the drying oven during the water-pumping time period is 100-125DEG C, the time is 2-10 hours and the microwave power density is 0-4kW / m<3>;and (c) film-forming time period: the setting temperature of the drying oven during the film-forming time period is 115-130DEG C, the time is 1-4.5 hours and the microwave power density is 0-2kW / m<3>. The invention can overcome the technical defects in the prior art that nonuniform drying inside and outside a spool bobbin or a spinning cake, poor film-forming property by drying, easy yarn burst, long drying time, poor stiffness and instable production quality in the process of drying the glass fiber strand and an oversized glass fiber spool bobbin cannot be effectively dried.

The invention discloses a regenerative system of a turbogenerator unit and an operation method thereof. The system comprises a high-pressure cylinder and a high-pressure heater, wherein an steam exhaust port and a plurality of high-pressure steam extraction ports whose steam extraction pressure is increased sequentially are formed in the high-pressure cylinder, the high-pressure steam extraction ports are connected with the same high-pressure heater through high-pressure steam extraction pipelines, and an extraction check valve and an isolated valve are arranged on each high-pressure steam extraction pipeline. When the turbogenerator unit operates at a rated load, a first high-pressure steam extraction port with the lowest steam extraction pressure supplies steam for the high-pressure heater, and the steam extraction pressure at the time is set to be P0; when the turbogenerator unit operates in a state lower than the rated load, a high-pressure steam extraction port with steam extraction pressure less than or equal to P0 or closer to P0 is selected to supply steam for the high-pressure heater, and the isolated valves on other high-pressure steam extraction pipelines are switched off. According to the regenerative system of the turbogenerator unit and the operation method thereof, a denitration system can operate normally when the unit operates at a low load, the boiler feeding temperature is increased, and the thermodynamic cycle efficiency of the unit is improved accordingly.

The invention discloses a rotary cylinder dryer for a high-pressure airflow sludge scattering device with a sprouted bed. The rotary cylinder dryer comprises a dryer body, the dryer body comprises a rotary cylinder, a sludge inlet is formed in the top of the rotary cylinder and extends into the rotary cylinder through a sludge chute, the sprouted bed is arranged at the bottom of the sludge chute, a high-pressure air chamber is formed in the rear side of the sprouted bed, air is supplied for the high-pressure air chamber through a high-pressure air pipe, the high-pressure air pipe comprises a high-pressure air main pipe and a plurality of high-pressure air branch pipes connected with the high-pressure air main pipe, the high-pressure air main pipe is connected with an air compressor through an air storage bag, the sprouted bed sequentially includes a first sprouted bed, a second sprouted bed and a third sprouted bed from top to bottom, and the high-pressure air branch pipes are connected with the first sprouted bed, the second sprouted bed and the third sprouted bed. The rotary cylinder dryer is good in scattering effect, and test operations show that the drying yield of an original rotary cylinder can be doubled.