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249results about How to "Reduce driving time" patented technology

Method for separating dimethyl carbonate and methanol through pressure-swing distillation of heat pump, and apparatus thereof

The invention provides a method for separating dimethyl carbonate and methanol through pressure-swing distillation of heat pump, and an apparatus thereof. In the dimethyl carbonate and methanol through pressure-swing distillation of the heat pump, an atmospheric azeotropic steam material obtained from the top of an atmospheric rectification tower is supercharged and heated by a heat pump compressor, and is introduced to a reboiler at the bottom of the atmospheric rectification tower as a heat source, so a liquid in the atmospheric rectification tower is heated, and the self-condensation of the atmospheric azeotropic steam material is completed. Compared with traditional atmospheric azeotropic steam material condensation through using cooling water and kettle liquid heating realized through an extra external heat source, the method in the invention properly improves the temperature and the pressure of an atmospheric azeotropic steam through the heat pump compressor to make the atmospheric azeotropic steam realize the kettle liquid heating and the reasonable and effective energy cycle as a heat source; and the cost generated by the pump heat compressor is far lower than the cost of traditional cooling water and the external heat source, so a good economic benefit is generated.
Owner:YASHENTECH CORP

Dual-seal-head controllable water heat removing reactor

The invention discloses a dual-seal-head controllable water heat removing reactor. The top of a main cylinder body is connected with a lower flange; the bottom of the main cylinder body is connected with a lower outer seal head; the upper flange is connected with the lower flange; one end of a catalyst filling pipe is connected between an upper inner seal head and a gas distribution cylinder, and the other end of the catalyst filling pipe sequentially penetrates through a baffle and an upper external seal head; one end of a water guide pipe is communicated between the baffle and the upper outer seal head, and the other end of the water guide pipe sleeves a heat exchange pipe internally; a pipe body of the heat exchange pipe is positioned in a gas distribution cylinder; an outlet of the heat exchange pipe is formed between the baffle and the upper inner seal head; a cylinder body of a gas collecting cylinder is positioned in the gas distribution cylinder; an outlet of the gas collecting cylinder is connected with a gas outlet. The heat exchange pipe is buried in a catalyst bed layer so as to remove reaction heat in the catalyst bed layer timely, and the defects of short service life, easiness in overtemperature, multiple auxiliary reactants, difficulty in bed layer temperature control, long driving time, difficulty of scaling up, high running energy consumption, high project investment and the like in the prior art can be solved.
Owner:NANJING DUNXIAN CHEM TECH

Construction method for controlling cleanliness of electronic-grade multicrystal-silicon process pipe

The invention discloses a construction method for controlling the cleanliness of an electronic-grade multicrystal-silicon process pipe. The construction method comprises the following steps of: (1) prefabrication machining; (2) pipe section assembling: finishing an assembly procedure of pipe sections by utilizing an interior gas protection device and an argon arc welding machine; (3) pipe section cleaning comprising the following steps of: degrease cleaning, water flushing after degreasing, complexing and derusting, rinsing, ammonia-plugging flushing, passivation processing, ultra-pure water flushing, dry processing and packaging; (4) multicrystal-silicon process pipe assembling; (5) field assembling of the multicrystal-silicon process pipe; and (6) process pipe blowing, pressure testing and airtightness testing. The invention has the advantages of reasonable design, simplicity and convenience in operation, convenience for realizing and good pipe cleanliness control effect, can solve various problems such as complex factors influencing the cleanliness of the interior of the multicrystal-silicon process pipe, difficulty in control of the cleanliness of the interior of the pipe, poor control effect of the cleanliness and the like in a multicrystal-silicon process pipe construction process.
Owner:SCEGC EQUIP INSTALLATION GRP COMPANY

Pressure gasification process for simultaneously gasifying powdered coal and coal water slurry

The invention relates to a pressure gasification process for simultaneously gasifying powdered coal and coal water slurry. The pressure gasification process is characterized in that a purpose-made gasification furnace is used, the gasification furnace is provided with a purpose-made powdered coal burner and a start-up burner and capable of simultaneously processing the coal water slurry and the powdered coal; gasification comprises the following steps of carrying out ignition start-up, igniting the powdered coal burner, increasing the temperature and pressure of the gasification furnace and a carbon washing tower, igniting a coal water slurry burner, increasing the pressure inside a gasification chamber, and controlling continuous gasification under a specific reaction condition. The pressure gasification process disclosed by the invention can be used for solving the problems of low effective component, high requirement on the quality of coal fed into the furnace, short life of the coal water slurry burner, short operation time of a single furnace, short life of a refractory brick, low coal slurry concentration and the like of a synthetic gas obtained through the traditional coal water slurry and solving the problems of large investment, complex equipment, high comprehensive energy consumption and the like of the traditional powdered coal gasification process.
Owner:SINOPEC NINGBO ENG +2
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