71results about How to "High degree of self-control" patented technology

The invention discloses a method for generating power and making ice by the aid of pressure energy of natural gas of a pipe network and a device. The method includes steps of (1), throttling the high-pressure natural gas by a throttling valve and expanding the high-pressure natural gas by an expansion machine to generate electric power; (2), realizing heat exchange between the expanded natural gas and refrigerant in a first heat exchanger 4, further realizing heat exchange between the natural gas and refrigerant of a second heat exchanger 5, leading the temperature of the natural gas to rise to a range from 2 DEG C to 10 DEG C after heat exchange processes, and delivering the natural gas into the urban gas pipe network; and (3), delivering one channel of the refrigerant in the second heat exchanger 5 into a refrigerant channel of the first heat exchanger after the heat exchange process, compressing another channel of the refrigerant by a compressor, cooling the other channel of the refrigerant by circulating cooling water, throttling and expanding the other channel of the refrigerant, and then delivering the other channel of the refrigerant and the refrigerant in the first heat exchanger after the heat exchange process together to an ice maker 11 to make ice. The method and the device have the advantages that fuel for heating low-temperature natural gas after pressure of the low-temperature natural gas is regulated is saved, operating cost of a natural gas pressure regulating station is greatly lowered, the electric power is obtained, and simultaneously, a large quantity of industrial or edible ice can be produced.

The invention relates to an organic waste gas catalytic combustion device. The organic waste gas catalytic combustion device comprises a waste gas inlet, a purified gas outlet, a catalytic purification device, a hot start wind circulation pipe and an electrical control device, wherein the waste gas inlet is used for inputting the waste gas; the purified gas outlet is used for outputting the purified gas; the catalytic purification device is used for performing catalytic combustion on the waste gas; the waste gas inlet is communicated with the catalytic purification device through a first pipeline; the purified gas outlet is communicated with the catalytic purification device through a second pipeline; the two ends of the hot start wind circulation pipe are communicated with the first pipeline and the second pipeline respectively; the second pipeline is connected with a fan; and the first pipeline, the catalytic purification device, the second pipeline, the hot start wind circulation pipe and the fan form a circulation path. The organic waste gas catalytic combustion device has the advantages of high self-control degree, available waste heat, stable performance, safety, reliability, small volume, light weight, simpleness and convenience in operation, good purifying effect and the like.

The invention discloses a method for recovering and treating ultrafiltration backwash water. The treatment method comprises the following steps: a. The membrane backwash water first enters a recovery adjustment tank; b. Dosing FeCl3 in the backwash water discharged from the recovery adjustment tank The coagulant FeCl3 is calculated as 15-30mg / L, and then the wastewater enters the pipeline mixer for mixing; c. The effluent of the pipeline mixer enters the membrane tank of the submerged membrane device after adding 10-30mg / L powdered activated carbon; d. The water entering the membrane tank is sucked by the filter pump, and the hydrostatic pressure and the suction negative pressure of the inner chamber of the membrane are used to pass through the membrane to obtain ultrafiltration backwash water and recover the effluent. The recovery method and device of the present invention have the advantages of high recovery efficiency, good effluent quality, high degree of self-control, long-term low-cost continuous operation, etc., and the effluent quality meets the requirements of the national drinking water quality standard, reducing the discharge of waste water.

The invention relates to a printing and dyeing wastewater treatment system, and belongs to the technical field of printing and dyeing wastewater treatment. The system consists of nine parts, namely an adjusting tank 1, a lift pump 2, a coagulating system 3, a primary sedimentation tank 4, a contact oxidation sediment system 5, a sand filtering tank 6, an active carbon adsorbing tank 7, a sludge pump 8 and a sludge concentrating tank 9. The printing and dyeing wastewater treatment system adopts the combined process of coagulation, contact oxidation, sand filtration and active carbon adsorption, and adds the deep treatment processes of the sand filtration and the active carbon adsorption after the physical-chemical treatment coagulation process and the biochemical treatment contact oxidation process. The printing and dyeing wastewater treatment system can be designed and manufactured respectively according to the wastewater quantities of printing and dyeing enterprises, and has the advantages of good treatment effect of printing and dyeing wastewater, stable operation, high degree of automation, simple operation, convenient maintenance, good and stable outlet water quality, superiorlevel to the national emission primary standard and the like. The system particularly has good treatment effect of the printing and dyeing wastewater with high density and high chromaticity.

The invention provides a process for preparing high-purity hydrogen sulfide, comprising: step S1, sequentially adding sulfur, organic solvent and 1,2-bis(diphenylphosphine)ethane into the reaction kettle, stirring and mixing, and using the first Heating at a heating temperature until the sulfur is melted into a liquid state to obtain a liquid melt; step S2, passing hydrogen gas into the melt, reacting and collecting the gas, and obtaining crude hydrogen sulfide; step S3, passing the crude hydrogen sulfide into the adsorption device, dry to obtain low-moisture hydrogen sulfide; step S4, pass low-moisture hydrogen sulfide into the crude product tank, and collect hydrogen sulfide at the first time; step S5, pass the collected hydrogen sulfide into the first-level finished product tank, Remove the heavy component impurities at the second temperature and the second pressure to obtain primary hydrogen sulfide; step S6, pass the primary hydrogen sulfide into the secondary finished product tank, and remove light components at the third temperature and the third pressure Separation of impurities to obtain high-purity hydrogen sulfide. The technical problem that the traditional high-purity hydrogen sulfide preparation process cannot be industrialized is solved.