Trans 1, 3-dichloropropene and cis 1, 3-dichloropropene compound, and technological process

A technology of dichloropropene and technological process, applied in fertilizer mixture, organic chemistry, biocide and other directions, can solve the problems of difficult control operation, large loss of agricultural production, large control dosage, etc., to reduce the harm of nematodes, promote the Strong root system, the effect of inhibiting soil-borne diseases
CN110498728APending Publication Date: 2019-11-26湖南莱万特化工有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
湖南莱万特化工有限公司
Publication Date
2019-11-26

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Abstract

The invention discloses trans 1, 3-dichloropropene and cis 1, 3-dichloropropene compound, and technological process thereof, and belongs to the field of chemical technology. According to the technological process, three column continuous or four column continuous integral technology is adopted, an adopted first column is a crude extracting column, wherein a black raw material DD mixture (industrial dichloropropane) is converted to be white from black in the first column, and then is introduced into a second column; the second column is a weight-removing column, and is used for removing weightfractions in the discolored material obtained after passing of the raw material DD mixture through the crude extracting column, after weight removing, the material is introduced into a third column for production; the third column is a light-removing column, wherein after weight removing, the material is introduced into the third column for light removing, 1, 2-dichloropropene is removed, and sideline discharging is adopted for collection of trans 1, 3-dichloropropene and cis 1, 3-dichloropropene at the same time or collection of only cis 1, 3-dichloropropene; and a fourth column is a repeatlight removing column. Replacement of chemical products which are not beneficial for environmental protection is realized; insect and disease prevention rate is high; and it is beneficial for crop growth.
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Description

technical field

[0001] The invention belongs to the technical field of chemical industry, and in particular relates to trans-1,3-dichloropropene and cis-1,3-dichloropropene compounds and a process flow thereof. Background technique

[0002] There are several types of plant-parasitic nematodes that cause enormous economic losses. The most common genera are: Aphelenchoides, Meloidogyne, Heterodera, Globodera, Nacobbus, Pratylenchus, Stem nematode ( Ditylenchus), Xiphinema, Longidorus, Trichodorus, etc. Some plant-parasitic nematodes damage the tissue of plant roots and may form visible galls (root-knot nematodes), which are very useful indicators for their diagnosis. Some nematodes infect plant viruses as they feed on plants. One example is the dagger nematode (Xiphinema index), Grapevine Fanleaf Virus (GFLV), a very important carrier of grapevine diseases.

[0003] The losses caused by underground nematodes to crops are more accurate and predictable than other pests and d...

Claims

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