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Device and method for treating nitric acid containing high-boiling-point organic matters

A processing device and processing method technology, applied in the chemical industry, can solve the problems of affecting availability and high content of high-boiling organic matter

Pending Publication Date: 2020-10-20
山东友道化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a treatment device and method for nitric acid containing high-boiling-point organic matter, so as to solve the problem in the prior art that the content of high-boiling-point organic matter in recovered nitric acid is too high after nitrification wastewater is treated, which affects its availability.

Method used

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  • Device and method for treating nitric acid containing high-boiling-point organic matters
  • Device and method for treating nitric acid containing high-boiling-point organic matters
  • Device and method for treating nitric acid containing high-boiling-point organic matters

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Effect test

Embodiment 1

[0076]The outlet of the dilution kettle with a stirring structure in the dilution system 100 is connected to the dilution material inlet of the centrifuge in the solid-liquid separation system 200, and the diluted nitric acid outlet of the centrifuge in the solid-liquid separation system 200 is connected to the dilution of the distillation tower in the preliminary distillation system 300. The liquid inlet is connected, the high-boiling point organic matter outlet of the centrifuge in the solid-liquid separation system 200 is the organic matter extraction outlet, and the condenser outlet of the distillation tower in the preliminary distillation system 300 is the light component outlet. The first heavy component outlet (side gas phase outlet) of the distillation tower in the system 300 is connected with the concentrated nitric acid inlet of the rectification tower in the rectification system 400, and the second heavy component outlet of the distillation tower in the preliminary di...

Embodiment 2

[0080] The outlet of the dilution kettle with a stirring structure in the dilution system 100 is connected to the dilution material inlet of the filter in the solid-liquid separation system 200, and the diluted nitric acid outlet of the filter in the solid-liquid separation system 200 is connected to the dilution of the distillation tower in the preliminary distillation system 300. The liquid inlet is connected, the high-boiling point organic matter outlet of the filter in the solid-liquid separation system 200 is the organic matter extraction outlet, and the condenser outlet of the distillation tower in the preliminary distillation system 300 is the light component outlet. The first heavy component outlet (side gas phase outlet) of the distillation tower in the system 300 is connected with the concentrated nitric acid inlet of the rectification tower in the rectification system 400, and the second heavy component outlet of the distillation tower in the preliminary distillation ...

Embodiment 3

[0084] The outlet of the static pipeline mixer with mixing structure in the dilution system 100 is connected with the dilution material inlet of the centrifuge in the solid-liquid separation system 200, and the diluted nitric acid outlet of the centrifuge in the solid-liquid separation system 200 is connected with the distillation tower in the preliminary distillation system 300 The dilution liquid inlet is connected, the high-boiling organic matter outlet of the centrifuge in the solid-liquid separation system 200 is the organic matter extraction outlet, and the condenser outlet of the distillation tower in the preliminary distillation system 300 is the light component outlet connected to the static pipeline mixer in the dilution system 100 Inlet, the first heavy component outlet (side line gas phase outlet) of the distillation tower in the preliminary distillation system 300 is connected with the concentrated nitric acid inlet of the rectification tower in the rectification sy...

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Abstract

The invention provides a device and a method for treating nitric acid containing high-boiling-point organic matters. The boiling point of the high-boiling-point organic matters is greater than or equal to 240 DEG C. The device comprises a dilution system, a solid-liquid separation system, a primary distillation system and a rectification system, and the dilution system is used for diluting nitricacid containing high-boiling-point organic matters with water to obtain a diluted material; the solid-liquid separation system is used for carrying out solid-liquid separation on the diluted materialto obtain high-boiling-point organic matters and diluted nitric acid; the preliminary distillation system is used for carrying out preliminary distillation on the diluted nitric acid to concentrate the diluted nitric acid to obtain concentrated nitric acid; and the rectification system is used for rectifying the concentrated nitric acid to obtain recycled nitric acid. When the provided device is used for treating nitric acid containing high-boiling-point organic matters, the content of the high-boiling-point organic matters in the recovered nitric acid can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a treatment device and method for nitric acid containing high-boiling point organic matter. Background technique [0002] Nitration reaction is an important unit reaction widely used in the production of dyes, medicines, pesticides, explosives and other chemical products, among which nitric acid nitration is a commonly used nitration method. During the nitration reaction of nitric acid, a large amount of waste nitric acid saturated with organic matter will be produced. When it is directly used as the three wastes for neutralization treatment, the three wastes will be produced in a large amount, and the organic content in the waste salt will be high. The treatment cost is high and cannot be effectively utilized, resulting in Waste of resources, increased waste, and secondary pollution of the environment. [0003] In order to improve the utilization rate of nitric acid i...

Claims

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Application Information

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IPC IPC(8): C01B21/46
CPCC01B21/46Y02P20/10
Inventor 王勤波孙美玲于萌萌张海波刘明任苗苗熊振华
Owner 山东友道化学有限公司
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