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The production method of triisopropanolamine

A technology of triisopropanolamine and its production method, which is applied in the field of chemical building materials, can solve problems affecting product quality, many product by-products, long production cycle, etc., and achieve shortened production cycle, less product by-products, and low production cost Effect

Active Publication Date: 2016-07-06
安徽海螺材料科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solvent removal is still required, and the recovery of methanol solvent is more demanding. If the recovery is not good, it will easily lead to environmental pollution and affect product quality; and the final product of this document is a mixture of MIPA, DIPA and TIPA. To obtain TIPA, multiple stages are required. distilled out
[0007] In order to overcome the deficiencies in the above-mentioned prior art, such as unenvironmental protection, many by-products, high energy consumption, difficult investment, long production cycle, and high cost, the inventors of the present invention provide an improved production of triisopropanolamine method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 2100kg TIPA is used as solvent in the reactor, and 1700kg liquid ammonia is introduced to form an ammonia solution with a content of 44.7%. The reactor is opened, 10000kgPO is continuously added, the temperature is controlled at 60-90°C, and the pressure is controlled at 0.1-0.3MPa. After PO was added dropwise, the reaction was continued until the pressure no longer decreased. Inject 99.9% of nitrogen gas into the bottom of the reactor to remove unreacted ammonia, and the removed ammonia is sent to the secondary water spray packing tail gas absorption tower through the pipeline, and the ammonia is absorbed by water for further production of industrial coal-fired flue gas Ammonia water for denitrification. Add 2907Kg of water, control the temperature at 60-90°C, control the pressure at 0.1-0.3MPa, continue to drop 3720KgPO into the reactor, continue the reaction until the pressure is no longer lowered after the PO dropwise addition, and obtain 20050Kg TIPA aqueous soluti...

Embodiment 2

[0031]2100kg TIPA is used as solvent in the reactor, and 1700kg liquid ammonia is introduced to form an ammonia solution with a content of 44.7%. The reactor is opened, 10000kgPO is continuously added, the temperature is controlled at 60-90°C, and the pressure is controlled at 0.1-0.3MPa. After PO was added dropwise, the reaction was continued until the pressure no longer decreased. Inject 99.9% of nitrogen gas into the bottom of the reactor to remove unreacted ammonia, and the removed ammonia is sent to the secondary water spray packing tail gas absorption tower through the pipeline, and the ammonia is absorbed by water for further production of industrial coal-fired flue gas Ammonia water for denitrification. Control the temperature at 60-90°C, control the pressure at 0.1-0.3MPa, continue to drop 3720KgPO into the reactor, continue to react until the pressure no longer drops after PO is added dropwise, and obtain 17142KgTIPA, from continuing to drop PO to the end of the reac...

Embodiment 3

[0033] 2100kg TIPA is used as solvent in the reactor, and 1700kg liquid ammonia is introduced to form an ammonia solution with a content of 44.7%. The reactor is opened, 11500kgPO is continuously added, the temperature is controlled at 60-90°C, and the pressure is controlled at 0.1-0.3MPa. After PO was added dropwise, the reaction was continued until the pressure no longer decreased. Inject 99.9% of nitrogen gas into the bottom of the reactor to remove unreacted ammonia, and the removed ammonia is sent to the secondary water spray packing tail gas absorption tower through the pipeline, and the ammonia is absorbed by water for further production of industrial coal-fired flue gas Ammonia water for denitrification. Add 3143Kg of water, control the temperature at 60-90°C, control the pressure at 0.1-0.3MPa, continue to drop 3500KgPO into the reactor, continue the reaction until the pressure is no longer lowered after the PO dropwise addition, and obtain 21678Kg TIPA aqueous soluti...

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Abstract

The invention belongs to the field of chemical building materials and particularly relates to a producing method of triisopropanolamine. The invention solves a technical problem of providing an improved producing method of the triisopropanolamine, wherein the method is environmental-protective in industrial production, is less in side products, is low in energy consumption, is less in investment, is easy to popularize, is short in production period and is low in production cost. The producing method of the triisopropanolamine includes following steps: (A) adding liquid ammonia into a container with the triisopropanolamine as a solvent to prepare an ammonia solution; (B) controlling the temperature and pressure of a reaction, continuously adding dropwisely epoxypropane, and continuously carrying out the reaction after the epoxypropane is added completely until the pressure is not decreased anymore; (C) feeding nitrogen into the reaction liquid to expel non-reacted ammonia out from the reactor; and (D) controlling the temperature and pressure of a reaction, continuously adding dropwisely the epoxypropane, and continuously carrying out the reaction after the epoxypropane is added completely until the pressure is not decreased anymore to obtain the triisopropanolamine.

Description

technical field [0001] The invention belongs to the field of chemical building materials, and in particular relates to a production method of triisopropanolamine. Background technique [0002] Cement grinding aid is an admixture used in the cement grinding process, which can improve the grinding efficiency. Triisopropanolamine (referred to as TIPA) is one of the main components of cement grinding aids. TIPA can greatly improve the problems of paste balls caused by static electricity in cement particles, avoid over-grinding of cement particles, and improve grinding efficiency. Efficiency; at the same time, TIPA can promote the hydration of cement in the later stage, so that a denser structure is formed between the cement slurry and the aggregate, thereby greatly improving the later strength of the cement. [0003] The reports about the production method of TIPA mainly contain the following documents: [0004] Patent CN1629134 discloses a method for preparing TIPA with liqui...

Claims

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Application Information

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IPC IPC(8): C07C215/12C07C213/04B01J31/02
Inventor 曾君张大康冯方波明金龙
Owner 安徽海螺材料科技股份有限公司
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