Title:
VERTICAL VACUUM CRYSTALLIZING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/019542
Kind Code:
A1
Abstract:
The present invention provides a vertical vacuum crystallizing apparatus, comprising a crystallizing part and a condensing part. The crystallizing part is located below the condensing part. The crystallizing part comprises crystallizing section cylinder body, an outer flow guide cylinder, a central flow guide cylinder, a bottom stirrer, a secondary steam rising cylinder, a circulating pump, an inner circulating channel, and an outer circulating channel. The condensing part comprises a condensing section cylinder body as well as an overflow dam, a first water barrier cap, a liquid diverting ring, and a second water barrier cap which are disposed within the condensing section cylinder body in sequence from top to bottom. The advantages of the present invention are that: no heat exchanger is needed; the problems of serious scaling on an inner surface and scale cleaning do not exist; and because the vacuum operation pressure is close to the steam partial pressure of a solution, the operation is stable. The crystallizing part and the condensing part are combined to form one apparatus, such that a secondary steam flow path is shortened, and the seal point leakage caused by the increase of pipe connections are removed. The inner circulating channel removes a high saturation area in the crystallizing part, such that the saturations at different positions are even and low. The outer circulating channel removes excessive fine crystals and elutriates products with narrow particle size distribution.
Inventors:
CHEN AIMIN (CN)
SHEN MEIHE (CN)
SHEN MEIHE (CN)
Application Number:
PCT/CN2018/111214
Publication Date:
January 30, 2020
Filing Date:
October 22, 2018
Export Citation:
Assignee:
JIANGSU NEW HONDA GROUP (CN)
International Classes:
B01D9/02; B01D1/00
Foreign References:
| CN203763891U | 2014-08-13 | |||
| US20110061205A1 | 2011-03-17 |
Attorney, Agent or Firm:
NANJING RUIHONG PATENT & TRADEMARK AGENCY (ORDINARY PARTNERSHIP) (CN)
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