Title:
HEAVY METAL REMOVING PREPARATION, SYNTHESIS METHOD FOR SAME, AND APPLICATIONS THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/103847
Kind Code:
A1
Abstract:
The present invention relates to a heavy metal removing preparation, a synthesis method for same, and applications thereof. The synthesis method comprises the following specific steps: (1) with a dichloroalkane and ammonia serving as reaction raw materials, performing amination and oligomerization reactions in an alkaline condition; and, (2) adding carbon disulfide to the system produced in step (1) and reacting in an alkaline condition, thus completing the process; the method further comprises the removal of ammonia. The synthesis of the heavy metal removing preparation described in the present invention has the inexpensive dichloroalkane and ammonia serving as the raw materials, undergoes two reactions, is inexpensive, and has a high yield. The present invention overcomes the disadvantage and shortcoming of the prior art in which ethylenediamine is used as the raw material and significantly reduces production costs; the heavy metal removing preparation produced retains stable heavy metal removing performance even in extremely low pH conditions and provides very significant effects in the actual removal of heavy metals in industrial wastewater from plating and smelting.
Inventors:
GUO XUEJUN (CN)
Application Number:
PCT/CN2019/119596
Publication Date:
May 28, 2020
Filing Date:
November 20, 2019
Export Citation:
Assignee:
UNIV BEIJING NORMAL (CN)
International Classes:
C02F1/56; B01J20/26; C02F1/28
Foreign References:
| TW211020B | 1993-08-11 | |||
| CN110203991A | 2019-09-06 | |||
| CN110451622A | 2019-11-15 | |||
| KR20030034286A | 2003-05-09 | |||
| CN102942512A | 2013-02-27 | |||
| CN105001137A | 2015-10-28 | |||
| CN1781965A | 2006-06-07 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
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