Title:
DOUBLE-EFFECT CROSS-FLOW MVR EVAPORATION CONCENTRATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/124215
Kind Code:
A1
Abstract:
Provided is a double-effect cross-flow MVR evaporation concentration system comprising a feed liquid flow path subsystem, a cross-flow vapour compression subsystem and a waste heat recovery subsystem. A feed liquid in the feed liquid flow path subsystem is preheated by the waste heat recovery subsystem and heated by raw vapour to reach a bubble point and then undergoes a first-effect evaporation, the produced secondary vapour is compressed by a first-effect compressor (14) and then serves as a heat source for a second-effect evaporation, the feed liquid from the first-effect concentration is sent to a second-effect evaporator (11) via a first-effect discharge pump (8) to continue evaporation and concentration, the produced secondary vapour is compressed by a second-effect compressor (15) and serves as a heat source for the first-effect evaporation, and the finished liquid is discharged from the system through a second-effect discharge pump (13). The feed rate, preheating temperature and circulating flow of the systems and the operating differential pressure of the compressors, etc. are all operated under the precise control of PLC; and compared with a single-effect MVR evaporation concentration system, the operating differential pressure of the vapour compressors is reduced, the electricity consumption can be saved by 25% to 40%, the evaporative concentration expense is reduced, and the carbon dioxide emission causing a greenhouse effect is remarkably reduced.
Inventors:
HUANG CHANGXIONG (CN)
JIANG GANGJIAN (CN)
ZHANG ZONGJIN (CN)
JIANG GANGJIAN (CN)
ZHANG ZONGJIN (CN)
Application Number:
PCT/CN2016/071168
Publication Date:
July 27, 2017
Filing Date:
January 18, 2016
Export Citation:
Assignee:
JIANGMEN BAICHUAN ENVIRO-TECH CO LTD (CN)
International Classes:
B01D1/26; B01D1/22
Domestic Patent References:
| WO2006029464A1 | 2006-03-23 |
Foreign References:
| CN205360637U | 2016-07-06 | |||
| CN103768808A | 2014-05-07 | |||
| CN203741072U | 2014-07-30 | |||
| CN104162283A | 2014-11-26 |
Attorney, Agent or Firm:
BEIJING UTC LIANFENG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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