MVR salt separation and crystallization system and method combining pre-evaporation and condensate water recycling
A technology of crystallization system and condensate water, applied in the field of MVR salt separation crystallization system, can solve the problems of high energy consumption and high production cost of the salt separation crystallization wastewater treatment process, reduce system energy consumption, strengthen environmental friendliness, and expand production scale Effect
Inactive Publication Date: 2021-10-26
XIAN UNIV OF SCI & TECH
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a MVR salt separation crystallization system and method combined with pre-evaporation and condensed water reuse, mainly to solve the problems of high production cost and high energy consumption in the salt separation crystallization wastewater treatment process
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0065] Comply with the above technical solutions, such as figure 1 As shown, the MVR salt separation crystallization system and method of the present invention combined with pre-evaporation and reuse of condensed water are further illustrated by specific examples.
[0066] The MVR salt separation and crystallization system combined with pre-evaporation and condensed water reuse of the present invention includes a pre-evaporation section, a two-stage MVR salt separation and crystallization section and a condensed water recovery section;
[0067] The pre-evaporation section includes a raw material liquid pump 1, a primary preheater 2, and a first-effect falling film evaporator 5;
[0068] The two-stage MVR salt separation and crystallization section includes two-effect forced circulation evaporators 6,7, a primary gas-liquid separator 8, a primary steam compressor 9, a primary crystallization separator 10, a sodium sulfate crystal storage tank 11, two Stage preheater 12, three-...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an MVR salt separation and crystallization system and method combining pre-evaporation and condensate water recycling. The system comprises a pre-evaporation section, a two-stage MVR salt separation and crystallization section and a condensate water recovery section; the pre-evaporation section comprises a raw material liquid pump, a first-stage preheater and a first-effect falling film evaporator; the two-stage MVR salt separation crystallization section comprises a second-effect forced circulation evaporator, a first-stage crystallization separator, a sodium sulfate crystal storage tank, a second-stage preheater, a third-effect forced circulation evaporator, a second-stage crystallization separator and a sodium chloride crystal storage tank; and the condensate water recovery section comprises a condensate water pump and a condensate water tank. According to the difference of the solubility of sodium sulfate and the solubility of sodium chloride on temperature dependence, the system has the advantages that sodium sulfate is produced at the high temperature of 100-110 DEG C and sodium chloride is produced at the low temperature of 50-60 DEG C, the falling film evaporator serves as a pre-evaporator, condensate water produced by the system is recycled, and water resources are saved while the energy utilization rate of the system is increased. The energy consumption of the system is reduced, and the energy-saving effect of the system is obviously improved.
Description
technical field [0001] The invention relates to the technical field of resources and environment, in particular to an MVR salt separation crystallization system and method combined with pre-evaporation and reuse of condensed water. Background technique [0002] The industrial industry consumes a lot of water, which corresponds to the high amount of wastewater produced. The composition of the wastewater is complex and changeable. If it is discharged directly, it will damage the environment. Wastewater treatment is a major problem in the field of environmental protection, especially for the treatment of multi-component saline wastewater. difficulty. In addition, the inorganic salt components in wastewater have great recovery value and can be used as industrial raw materials. Therefore, recycling valuable inorganic salt components while treating wastewater can achieve dual benefits of the environment and economy. [0003] With the advancement of science and technology and the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B01D9/02B01D1/22B01D1/26B01D1/28
CPCB01D1/22B01D1/26B01D1/28B01D9/004B01D9/0031
Inventor 姜华张子惠宫武旗
Owner XIAN UNIV OF SCI & TECH