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8N electronic-grade high-purity ammonia rectification system and quality control method thereof

A quality control method and rectification system technology, applied in the 8N electronic grade high-purity ammonia rectification system and its quality control field, can solve problems such as inability to stably produce and control rectification process parameters, to ensure high purity, The effect of ensuring stability

Pending Publication Date: 2021-06-11
浙江英德赛半导体材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the existing quality control methods cannot stably control the process parameters of rectification, ensure the product purity while ensuring the product yield, and cannot stably produce

Method used

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  • 8N electronic-grade high-purity ammonia rectification system and quality control method thereof

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Embodiment Construction

[0021] Such as figure 1 Shown, the technical solution of the present invention is a kind of 8N electronic grade high-purity ammonia rectification system, and it comprises rectification tower 29, reboiler, condenser 11, vaporizer, feed pipe 32, tower top exhaust pipe 8, The product collection outlet pipe 17 and the tower kettle row pipe 19 are characterized in that a reboil inlet pipe 22 and a reboil outlet pipe 2823 are connected between the reboiler and the rectifying tower 29, and a reboiler outlet pipe 2823 is connected to the reboiler. A hot water inlet pipe 24 and a hot water outlet pipe 25, a condensation inlet pipe 3 and a condensation outlet pipe 12 are connected between the condenser 11 and the rectification tower 29, and a cold water inlet pipe 10 and a cold water outlet pipe 4 are connected on the condenser 11. The waste discharge pipe 8 at the top of the tower is connected to the exhaust outlet of the condenser 11, the feed pipe 32, the product collection outlet pi...

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Abstract

The invention provides an 8N electronic-grade high-purity ammonia rectification system, which is characterized in that a reboiling inlet pipe and a reboiling outlet pipe are connected between a reboiler and a rectification tower; the reboiler is also connected with a hot water inlet pipe and a hot water outlet pipe; a condensation inlet pipe and a condensation outlet pipe are connected between a condenser and the rectification tower; the condenser is connected with a cold water inlet pipe and a cold water outlet pipe; a tower top waste discharge pipe is connected to an exhaust outlet of the condenser; a feed pipe, a product collection outlet pipe and a tower kettle discharge pipe are connected with the rectification tower; the product collection outlet pipe is provided with an analysis sampling pipe; and the vaporizer is arranged at the inlet end of the feed pipe. According to the system, the processes of feeding, rectification, reboiling, condensation, tower top waste discharge, tower bottom waste discharge and product extraction are controlled and observed, so that not only can the operation stability and the product yield be ensured, but also the high purity of the product can be ensured, and finally, the orderly, quantitative and high-quality production of the product is realized.

Description

technical field [0001] The invention belongs to the technical field of high-purity ammonia industrial production, and in particular relates to an 8N electronic-grade high-purity ammonia rectification system and a quality control method thereof. Background technique [0002] Distillation process is the most widely used separation technology in the chemical production process, and it is also the most mature technology. The operation of the rectification system will affect the material balance in the tower, affect the mass transfer, heat transfer and gas-liquid equilibrium process, and ultimately affect the product quality and product yield. The production of electronic-grade high-purity ammonia (purity: 99.99999%) is mostly purified by crude ammonia, and the impurity components in the crude ammonia are separated by rectification towers, thereby obtaining high-purity liquid ammonia products. Electronic grade high-purity ammonia has high purity, so the quality control of the re...

Claims

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Application Information

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IPC IPC(8): B01D3/14B01D3/32B01D3/42C01C1/10
CPCB01D3/14B01D3/32B01D3/322B01D3/42C01C1/10
Inventor 赵晓兰潘佳伟丁高松潘伟
Owner 浙江英德赛半导体材料股份有限公司
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