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Alkanolamine product distribution improvement method

A technology of alkanolamines and products, which is applied in the field of chemical synthesis and alkanolamine synthesis effects, which can solve the problems of unsatisfactory distribution and inconsistent content, and achieve the effect of improving the uniformity

Inactive Publication Date: 2008-10-22
HONGBAOLI GRP CO LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The previous synthetic route was to directly put the two materials of alkylene oxide and ammonia water together for reaction, which resulted in the distribution of the product failing to meet the requirements, the content not meeting the process specifications, and large molecular weight impurities may be produced at the same time

Method used

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  • Alkanolamine product distribution improvement method

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Embodiment Construction

[0017] As shown in Figure 1, a method for improving the synthetic effect of ethanolamine of the present invention, taking ethanolamine as an example, its steps are as follows:

[0018] (1) The raw material liquid ammonia enters the mixer after being fully mixed with deionized water in a certain proportion, while ethylene oxide comes out of the raw material tank area and enters the intermediate tank first, and then is pumped to each section of the reactor to supplement the reaction process The required ethylene oxide in.

[0019] (2) Before ethylene oxide and ammonia water enter the reactor, the two streams of materials are delivered to a high-efficiency mixer to make them fully contact. The high-efficiency mixer used is a combination of Venturi and static mixers. The combination method is better, and the equipment is convenient for processing and industrialization.

[0020] (3) The fully mixed ethylene oxide and ammonia water enter the reactor immediately. The reactor is div...

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Abstract

The present invention relates to alkanolamine synthesizing effect, and belongs to the field of chemical technique. The technological scheme includes: 1. material liquid ammonia and deionized water in certain proportion are mixed before entering to the reactor, and the alkylene oxide is made to enter an intermediate tank and then pumped into different sections of the reactor; and 2. alkylene oxide and ammonia water are mixed effectively inside one efficient mixer before being fed to the reactor. The present invention has the advantages of homogeneous mixing of reactants, raised main product amount, inhibition of side reaction and reducing impurity, lowered product chroma and raised product apparent index.

Description

technical field [0001] The present invention relates to a kind of chemical synthesis method, more precisely the present invention relates to a kind of method of alkanolamine synthesis effect. It belongs to the technical field of chemical technology. Background technique: [0002] Alkanolamine products generally refer to products that contain both hydroxyl and amino groups in the carbon chain. In the production process of this type of product, controlling the uniformity of contact and dispersion of alkylene oxide and ammonia water is the key to affect product distribution and whether the product is qualified. The previous synthetic route was to directly put the two materials of alkylene oxide and ammonia water together for reaction. As a result, the distribution of the product did not meet the requirements, the content did not meet the process specifications, and large molecular weight impurities may be produced. Invention content: [0003] The purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/04
Inventor 张书芮益民杭建荣邢益斌
Owner HONGBAOLI GRP CO LTD
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