36results about How to "Stable operating pressure" patented technology

The invention provides an extraction device and an extraction method, the mixing and clarifying extraction tank includes a mixing chamber, an organic liquid film generator, a gas-liquid separation device and a liquid-liquid coalescence separation device; the mixing chamber is provided with a heavy phase input port and the first heavy phase outlet; the organic liquid film generator is connected to the mixing chamber, and a light phase input port and an air inlet are provided; the gas-liquid separation device is connected to the mixing chamber; the liquid-liquid coalescence separation device It is connected with the gas-liquid separation device, and is provided with a liquid inlet, a first light phase discharge port and a second heavy phase discharge port. The device does not need to be equipped with a clarification chamber, which better realizes the integrated structure of the mixing chamber and the clarification chamber, solves the problem of uniform distribution of the heavy phase liquid in the mixing chamber and the separation of light phase, heavy phase and gas phase in the mixing chamber, and occupies a small area. Low consumption, can handle a large flow of aqueous solution containing the target to be separated, and can reduce back-mixing in the high-level extraction tower.

The invention provides a method for preparing aliphatic polycarbonate through a continuous solution polymerization method. The method comprises the following steps of a, injecting an epoxy monomer, carbon dioxide and catalyst into a circulation flow reactor through a continuous way, utilizing a circulation pump to provide power for the reaction materials, circularly returning partial reaction materials to the circulation flow reactor, driving one part of the reaction materials to leave the circulation flow reactor at a speed being identical to the feeding speed to enter a tubular reactor with a built-in static mixer; b, controlling the retention time of the pulp in the tubular reactor through the ratio of the pipe length and the flowing linear speed of the reaction materials, and gradually charging a solvent step by step through a plurality of feeding ports along the length of the tubular reactor; c, feeding an end sealing agent and a stabilizer through a feeding port on the tail end of the tubular reactor to carry out the in-situ chemical or physical modification; d, ensuring the reaction endpoint pulp which continuously flows out of a discharging end to enter a middle-pressure flash evaporator, carrying out the flash evaporation by utilizing the reaction pressure, removing the solvent, and returning the pulp to the tubular reactor after the pulp is condensed; and e, devolatilizing and drying the pulp to obtain a polymerization product.

The invention discloses a natural-gas flow-temperature helium extracting system and a natural-gas flow-temperature helium extracting method. According to the system and the method, the post-expansion and nitrogen circulating refrigerating two-column separating technology is carried out for fully recovering the cooling capacity of the device in order to pre-cool the natural gas which serves as the raw material, and thereby the system can be applied to the natural gas which has an extremely low content of helium, and has the characteristics of being low in energy consumption, high in helium recovery rate, small in investment, flexible in operation, and high in adaptability to variable working conditions. The system and the method have the positive effects that little helium in the helium-containing natural gas can be extracted by a pre-cooling system and a low-temperature rectifying system, an independent nitrogen circulating refrigerating system is adopted and used for supplying an ultralow-temperature cold source required in helium concentration, and the independent system is rich in adjusting means and cannot be influenced by upstream operations; and a post-expansion refrigerating system is adopted, so that the natural-gas low-temperature helium extracting system has the operation pressure higher than that in conventional technology, and higher concentration of the helium can also be obtained at the same refrigerating temperature.

The invention provides a method for controlling low temperature refrigeration of an air conditioner. The method comprises the following steps: (1) measuring middle temperature T3 of an outer unit condenser; (2) comparing T3 with first preset values T1 and T3 and a second preset value T2 respectively, wherein T1 is greater than T2; (3) when T3 is greater than T1, raising output voltage U of an external motor so as to increase the rotating speed of an external fan; when T3 is smaller than T2, decreasing the U so as to reduce the rotating speed of the external fan. According to the method for controlling the low temperature refrigeration of the air conditioner, the output voltage U of the external motor is adjusted according to the middle temperature T3 of the condenser so as to adjust the rotating speed of the external fan, and then the T3 is stabilized in a range of T2 to T1. The T3 can reflect the system operation pressure of the air conditioner better, thus the T3 stabilized in the certain range can ensure the working pressure of the condenser, thus the system operation pressure is controlled better; therefore, stable operation of the system is ensured during the low temperature refrigeration of the air conditioner, thus the start and stop times of a compressor are reduced, and the comfort of room is improved.

The invention mainly relates to a reverse-osmosis and ultra-filtration scale inhibitor with the wide suitable salinity range. The inhibitor has the good scale inhibition effect within the wide ionic strength range, and is prepared from one or more of amino trimethylene phosphonic acid (ATMP), phosphono-carboxylic acid (POCA), polyaspartic acid (PASP) and polyamino polyether methylene phosphonate (PAPEMP); by means of the reverse-osmosis and ultra-filtration scale inhibitor, membrane face scaling can be effectively prevented, fouling of a membrane is prevented, and the service life of a membrane system is prolonged. The working pressure and the water production efficiency of the membrane system are kept, and it is prevented that due to fouling, energy consumption of the system is increased. According to the reverse-osmosis and ultra-filtration scale inhibitor with the wide suitable salinity range, the reverse-osmosis scale inhibitor can be suitable for the wide water-quality salinity range (electric conductance is 0 microsecond to 30,000 microseconds) through compounding, and the using effect of the reverse-osmosis inhibitor can be guaranteed within the range.

The invention relates to a solid particle ejecting distributor and an online decoking device. The solid particle ejecting distributor and the online decoking device mainly solve the problems that in the prior art, when a solid particle ejecting distributor is used for ammoxidation, adhering and accumulated coking materials in a gas cooler tube nest are difficult to remove, the resistance of a pipeline of the cooler tube nest is increased, the operation pressure of a reactor is increased, the reaction performance of catalysts is lowered, device consumption is increased, and an operation cycle is shortened. The technical scheme that the body of the solid particle ejecting distributor is cylindrical or conical or spherical or square or polygonal or in the shape of a branch, at least one of the bottom and the side face of the ejecting distributor is provided with a guiding hole or a guiding pipe, the included angle between the center line of the guiding hole or the guiding pipe in the bottom and the perpendicular axis of the distributor is 0-80 degrees, and the included angle between the center line of the guiding hole or the guiding pipe of the side face and the perpendicular axis of the distributor is 1-90 degrees is adopted, the problem is well solved, and the solid particle ejecting distributor and the online decoking device can be used in an industrial plant for online decoking of an ammoxidation gas cooler.

The invention discloses a marine diesel engine fuel oil filter with an ultrasonic cleaning device. The marine diesel engine fuel oil filter with the ultrasonic cleaning device comprises a filter shell, wherein the filter shell is provided with an oil inlet, an oil outlet and a sewage outlet used for discharging impurities. The ultrasonic cleaning device acting on the interior of a filter cavity is arranged on the filter shell. The ultrasonic cleaning device comprises an ultrasonic transducer fixed to the filter shell, and a high-frequency vibrating bar which extends into the filter cavity and is used for converting high-frequency electric energy into mechanical energy is connected to the ultrasonic transducer. A filtering method comprises the steps that firstly, a procedure is set; secondly, conventional cleaning is conducted, and conventional cleaning includes (1) high-pressure oil cleaning and (2) high-pressure air reverse-blowing cleaning; and thirdly, deep cleaning is conducted, namely ultrasonic cleaning is conducted. According to the filter, regular automatic cleaning control can be achieved, the automation degree is greatly increased, and the labor intensity of workers is effectively relieved; faults, caused by quality problems of diesel oil, of a diesel engine are reduced, and remarkable economical benefits are obtained on the aspects of saving oil, prolonging the service life of the diesel engine and the like.

The invention belongs to the field of new energy, and particularly relates to a six-tank circulating type marsh gas double-path SOFC anode fuel supply system. Crop straw is adopted as raw materials of the system, six fermentation tanks are designed to enter a marsh gas production period in sequence, two fermentation tanks are kept supplying marsh gas at the same time, and the output flow of the two fermentation tanks is kept to be output in a staggering peak mode. The SOFC anode fuel supply system is designed into a double-path supply system, namely, an A-path system and a B-path system. The A-path system and the B-path system alternately bear a work state and a maintenance and standby state. When a certain device in the anode fuel supply system in the work state breaks down, a corresponding device in the system in the maintenance and standby state is immediately switched to replace the device breaking down to work. The SOFC anode fuel supply system has the advantage of being large and stable in marsh gas supply flow, the needs of SOFC generated power for continuous supplying to the anode fuel supply system are met.

The invention discloses a forward and reverse double-flow calcium carbonate filter in the field of industrial water treatment. The structure includes a water pump, a three-way diverter, a calcium carbonate filter column, a submerged elbow with a cover, a gate valve, a check valve, and a casing. The filter can be filtered according to the conventional calcium carbonate filter in the downstream mode, or it can be filtered in a better countercurrent mode by turning on the water pump, which increases the fault tolerance rate of the entire system and can bring out the air bubbles remaining in the filter, ensuring The filter works under a constant pressure to ensure the water flow rate and filtering effect.