CN205472703U - Take strong brine crystal separation device of mother liquor separator - Google Patents

Abstract

Take strong brine crystal separation device of mother liquor separator relates to the waste water treatment technology in environmental protection technology field. The utility model discloses a crystallizer, circulating pump and the heater that form circulation pipeline connect gradually. The bottom in crystallizer lower part toper chamber is equipped with the washing leg. Structurally, connect the mother liquor separator between crystallizer and the circulating pump. Two -layer salt crystal baffle about being equipped with in the cavity of mother liquor separator, the position that corresponds with two salt crystal baffles on the mother liquor separator lateral wall is equipped with the mother liquor discharge port respectively. Compared with the prior art, the utility model discloses lug connection to the circulation pipeline of strong brine crystal system in, can be effectively with mother liquor and salt crystal separation, the greatly reduced mother liquor discharges the salt crystal volume of carrying when avoiding the calorific loss of system.

Description

Strong brine Crystallization Separation device with mother solution separator

Technical field

This utility model relates to the strong brine Crystallization Separation device of the wastewater processing technology of environmental technology field, particularly band mother solution separator.

Background technology

Can produce substantial amounts of brine waste in the commercial production such as oil, Coal Chemical Industry, electric power, these waste water, by after reuse, produce a small amount of high slat-containing wastewater.In prior art, generally use the crystal system comprising crystallizer to continue to concentrate to brine waste, to realize zero-emission or the near-zero release of waste water, finally produce a certain amount of containing various inorganic salinities and organic solid waste.Owing to this type of solid waste is defined as danger wastes in China, processing cost is high, so that operating cost sharply increases.

By above-mentioned solid waste is carried out component analysis, its inorganic salt accounts for the overwhelming majority, particularly NaCl and Na₂SO₄Two kinds of salt-mixtures content more than 90%.If being separated with other materials by salt-mixture, then can reduce the solid waste of more than 90%, NaCl and Na simultaneously₂SO₄Salt-mixture is alternatively arranged as the raw material of sal prunella coproduction industry, is not only substantially reduced the landfill expense of solid waste, it is also possible to turn waste into wealth, produces certain economic benefit.

Summary of the invention

For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide the strong brine Crystallization Separation device of a kind of band mother solution separator.It is directly connected in the circulation line of strong brine crystal system, can effectively be separated with crystal salt by mother solution, and in this separation process, circulating brine temperature is basically unchanged, it is to avoid be substantially reduced the crystal salt amount entrained by mother solution discharge while system heat losses.

In order to reach foregoing invention purpose, the technical solution of the utility model realizes as follows:

With the strong brine Crystallization Separation device of mother solution separator, it includes being in turn connected to form the crystallizer of circulation line, circulating pump and heater.The bottom in crystallizer lower taper chamber is provided with washing lower limb.It is structurally characterized in that, connects mother solution separator between described crystallizer and circulating pump.Being provided with upper and lower two-layer crystal salt baffle plate in the cavity of mother solution separator, position corresponding with two crystal salt baffle plates on mother solution separator sidewall is respectively equipped with mother solution floss hole.

This utility model is owing to have employed said structure, and washing lower limb and mother solution separator by crystallizer bottom discharge crystal salt and mother solution respectively, to maintain the salinity of whole system.In this separation process, circulating brine temperature is basically unchanged, and is greatly saved space simultaneously.This utility model simple in construction, by simple Gravity Separation, can separate crystalline solid with mother solution.

With detailed description of the invention, this utility model is described further below in conjunction with the accompanying drawings.

Accompanying drawing explanation

Fig. 1 is connection diagram of the present utility model；

Fig. 2 is the structural representation of mother solution separator in this utility model.

Detailed description of the invention

Referring to Fig. 1 and Fig. 2, the strong brine Crystallization Separation device of this utility model band mother solution separator, it includes being in turn connected to form the crystallizer 1 of circulation line, mother solution separator 3, circulating pump 5 and heater 11.The bottom in crystallizer 1 lower taper chamber is provided with washing lower limb 7.Being provided with upper and lower two-layer crystal salt baffle plate 6 in the cavity of mother solution separator 3, position corresponding with two crystal salt baffle plates 6 on mother solution separator 3 sidewall is respectively equipped with mother solution floss hole 4.

In this utility model running, the salt crystal grain in crystallizer 1 is along with the flowing of hot salt brine and action of gravity, and constantly collision is combined into bigger crystal grain, forms haptophore, and with the flow motion of saline to tank skin direction outside washing lower limb 7.Owing to the density of crystal grain is greater than the density of saline, crystal grain moves downward, and constantly " growing up ", drops to wash near the place of entry of lower limb 7 top, and crystal salt is discharged by floss hole 9.Mother solution separator 3 uses Gravity Separation design mother solution discharge, can effectively make crystalline solid not discharge with mother solution.Following endless tube vertical downflow from the crystallizer 1 sidewall crystallization saline rich in crystalline solid out, when flowing through vertically arranged mother solution separator 3, the proportion of crystalline solid is more than the proportion of saline, and due to the effect of gravity, crystalline solid moves downward.Crystalline solid continues to vertical downward movement after being stopped by the baffle plate 6 in mother solution separator 3, and the strong brine liquid without crystal salt then can walk around baffle plate 6, overflows from the mother solution floss hole 4 of high point.Additional steam is entered the heating chamber of heater 11 by air inlet 10, and the condensed fluid after heat exchange is discharged by the floss hole 12 on heater 11.Steam in crystallizer 1, after two grades of demisters 13, is discharged by the outlet 15 of crystallizer 1 upper taper chamber sidewall.

Claims (1)

1. the strong brine Crystallization Separation device of band mother solution separator, it includes being in turn connected to form the crystallizer (1) of circulation line, circulating pump (5) and heater (11), the bottom in crystallizer (1) lower taper chamber is provided with washing lower limb (7), it is characterized in that, mother solution separator (3) is connected between described crystallizer (1) and circulating pump (5), being provided with upper and lower two-layer crystal salt baffle plate (6) in the cavity of mother solution separator (3), position corresponding with two crystal salt baffle plates (6) on mother solution separator (3) sidewall is respectively equipped with mother solution floss hole (4).