5results about How to "Reduce steam consumption" patented technology

The utility model relates to the technical field of tail gas heat energy utilization of turbine fans of paper mills, in particular to a tail gas heat energy recovery system of a turbine multistage centrifugal pump of a paper machine. The system comprises a waste gas filtering device, a heat energy recycling device, a clear water circulating device and a waste gas treatment device, the heat energy recycling device comprises a heat exchanger, the waste gas treatment device comprises a spraying tower, the waste gas treatment device comprises a filtering box and a turbine multi-stage centrifugal pump, the turbine multi-stage centrifugal pump is connected to the filtering box through a pipeline, and the spraying tower is connected to the spraying tower. The bottom end of the heat exchanger is connected to the filter box, the top end of the heat exchanger is connected to the bottom end of the spray tower through a pipeline, and the clear water circulating device is connected to the heat exchanger through a water pipe. According to the utility model, the turbine multistage centrifugal pump exhausts air to heat the clear water of the paper machine, so that the waste heat is effectively utilized, the temperature of the papermaking clear water is increased, the energy consumption is saved, the exhaust temperature is reduced, the amount of water exhausted into the atmosphere is reduced, and the environment protection is facilitated.

The application belongs to the technical field of alumina production and specifically relates to a preparation method of a sodium aluminate solution fine filtration filter aid, which uses lime or lime milk, a sodium aluminate solution and ethanol or methanol as raw materials, and the ratio of the raw materials is as follows: 1 part of lime or lime milk, 2-20 parts of the sodium aluminate solution, 0.02-0.2 parts of ethanol or 0.01-0.1 parts of methanol, the concentration of the sodium aluminate solution is 100-300 g / L of Na2O and 50-220 g / L of Al2O3, the sodium aluminate solution fine filtration filter aid is prepared under the conditions of a reaction temperature of 25-105 DEG C and a reaction time of 5-240 minutes. The application has the following effects: the use amount of the lime milk for filtration can be greatly reduced, and the loss of alumina, steam consumption, water consumption and power consumption caused by the large use amount of the lime milk can be reduced.

The invention relates to the technical field of boiler flue gas waste heat utilization, and particularly discloses a boiler waste heat composite utilization system and method.The system comprises a boiler and a sulfur removal tower, and the boiler is connected with the sulfur removal tower; the boiler flue gas desulfurization system is used for carrying out flue gas desulfurization on boiler flue gas and is connected with the desulfurization tower through a pipeline; the flue gas guide and drainage system is used for shunting desulfurized flue gas output by the boiler flue gas desulfurization system and respectively guiding and shunting the desulfurized flue gas to the air preheating system, the lignite drying system, the hot water network heating system and the condensed water heating system through four passages; the air preheating system is connected with the boiler; the flue gas guide drainage system synchronously controls the air preheating system and the lignite drying system; and the flue gas guide drainage system synchronously controls the hot water network heating system and the condensate water warming system. According to the invention, the flue gas waste heat discharged by the boiler can be effectively recovered and used for multiple purposes, so that the utilization efficiency of energy is remarkably improved, and the energy waste is reduced.

The present invention belongs to the technical field of heating energy saving, and relates to a heating energy saving system and method for deeply utilizing the waste heat of a boiler room. In the heating energy saving system, a blower is arranged on the upper part of the boiler room, a relay blower on the operating layer is installed above the operating layer, an air preheater is installed inside the bottom layer of the boiler room, the air preheater is connected to the air outlet of the boiler professional blower through the air supply duct 1, and the air inlet of the boiler professional blower is connected to the air inlet device through the air supply duct 2, and the air inlet device is provided with an outdoor air inlet regulating air valve and an indoor air inlet regulating air valve. The heating energy saving method, when the outdoor temperature of the boiler room is lower than the set threshold, starts the blower to supply air to the room, so that the temperature of the bottom layer of the boiler room is higher than the minimum heating temperature, keeps the indoor air inlet regulating air valve open, maximizes the air suction volume of the boiler professional blower from the room, reduces the steam consumption of the air preheater, and achieves the purpose of energy saving. The structure and principle of the present invention are simple and clear, with low equipment investment and easy implementation.

This application relates to the field of materials science and engineering, specifically disclosing a method for producing a balanced high-potassium, fully water-soluble compound fertilizer based on a high-tower process. The method includes raw material preparation, melt mixing, granulation, cooling and sieving, and finished product coating steps. This invention innovatively uses 304 austenitic stainless steel in all material contact stages, eliminating rust contamination at the source. It employs a double-layer coating process—first spraying hydrophobic oil, then applying fine powder—for surface modification. Combined with optimized melt shearing and stepped cooling parameters, the prepared compound fertilizer exhibits excellent properties such as full water solubility, no residue, high strength, and resistance to caking during storage and transportation. This invention effectively solves the problems of high water-insoluble matter and easy hygroscopic pulverization in traditional high-tower products, is fully compatible with integrated fertigation drip irrigation systems, and significantly reduces production energy consumption.