35results about How to "Good heat transfer coefficient" patented technology

The invention discloses a novel energy-saving autoclaved fly ash hollow wall material, which belongs to the field of building wall materials. It is prepared from the following raw materials in parts by weight: 55-75 parts of dry fly ash, 10-20 parts of carbide slag, 1-2 parts of gypsum, 5-25 parts of aggregate, and 0.5-1 part of sodium metasilicate. It is a cuboid, with blind holes distributed on the front of the cuboid, which communicate with the bottom surface; two of the sides have masonry positioning mortises, and the middle parts of the two sides are groove-type grip holes, and the ribs are set in the groove-type grip. In the middle of the hole, divide the grip hole into upper and lower two. The hollow wall material of the present invention has high compressive strength, large porosity (above 45%), small drying shrinkage, light density, small size deviation, high construction efficiency, excellent thermal insulation and other properties, and can greatly reduce The energy consumption of buildings is much better than traditional wall materials.

The invention relates to a no-scaling fluidized bed heat exchanger. The no-scaling fluidized bed heat exchanger is mainly used for solving the technical problems that in the traditional technology, a methyl tertiary butyl ether device refining tower condenser tube pass is liable to scale, and the heat exchange effect is lowered significantly after a long period of usage. According to the adopted technical scheme of the no-scaling fluidized bed heat exchanger, a lower pipe box 1, a heat exchanger tube 2, an upper pipe box 3, a liquid-solid separator 4, a downtake 5, a solid particle trough 6, a liquid storage trough 7, a liquid circulation pump 8, a distribution box 9, a ball plug 10, a baffle 11 and a distribution plate 12 are included; the distribution box 9 is connected with the heat exchanger tube 2 through a thin tube 13; the heat exchanger tube 2 is connected with the upper pipe box 3; the upper pipe box 3 is connected with the liquid-solid separator 4; solid particles enter the solid particle trough 6 through the downtake 5 and then return to the lower pipe box 1; liquid enters the liquid storage trough 7 and is conveyed to the lower pipe box 1 through the liquid circulation pump 8, through the technical scheme, the technical problems are solved well, and the no-scaling fluidized bed heat exchanger can be used for prolonging the operation cycle of a methyl tertiary butyl ether device refining tower condenser.

The invention discloses a continuous crystallization process for monopotassium phosphate. The continuous crystallization process comprises the following specific steps of: introducing a feed liquid to be crystallized into a first-stage continuous flash crystallizer so as to be separated into a primary clear liquid, primary crystal mush and secondary steam; discharging the primary crystal mush from the first-stage continuous flash crystallizer and feeding the primary crystal mush into a second-stage continuous cooling crystallizer, wherein the second-stage continuous cooling crystallizer is composed of an Oslo crystallizer and an external cooler; separating the primary crystal mush into secondary crystal mush and a secondary clear liquid in the Oslo crystallizer; discharging the secondary crystal mush from the Oslo crystallizer, feeding the secondary crystal mush into a thickener and separating the secondary crystal mush into triple clear liquid and triple crystal mush; discharging the triple crystal mush from the thickener, feeding the triple crystal mush into a centrifugal machine, and separating the triple crystal mush into solid monopotassium phosphate and a centrifugal liquid; and discharging the solid monopotassium phosphate from the centrifugal machine. The continuous crystallization process is stable in operation, low in energy consumption and low in labor intensity; and by using the continuous crystallization process, the operation stability and the product quality are greatly improved, the on-site operation environment is improved, and the production cost of the monopotassium phosphate is reduced. A mating device for the process is small in floor area and high in capacity.