Safe concentration process and system for sodium nitrophenolate wastewater

A technology of sodium nitrophenolate and concentration system, which is applied in water/sewage treatment, natural water treatment, water treatment parameter control, etc. Efficient and safe concentrated effect

Pending Publication Date: 2020-09-22
四川北方红光特种化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when p-nitrophenol sodium salt wastewater is further concentrated, in order to improve the concentration efficiency, the temperature during concentration is high, and it is easy to over-concentrate and cause dry burning, which has potential safety hazards

Method used

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  • Safe concentration process and system for sodium nitrophenolate wastewater
  • Safe concentration process and system for sodium nitrophenolate wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The safe concentration process of nitrophenol sodium salt wastewater comprises the following steps:

[0032] A1: Concentrate the sodium phenate waste water with 30% of the raw water in a vacuum with the residual steam of the factory building to obtain the pre-concentrated sodium phenate waste water, and transport the pre-concentrated sodium phenate waste water to the waste water pool for storage;

[0033] A2: The pre-concentrated sodium phenate wastewater is transported to the waste water transfer tank 1, and pumped from the waste water transfer tank 1 to the waste water high tank 3, and the pre-concentrated sodium phenate waste water in the waste water high tank 3 is measured and stabilized by a flow meter Conveying into the concentration tank 2 for concentration, controlling the flow rate of the pre-concentrated sodium phenate wastewater into the concentration tank 2 to be 2t / h; the temperature in the concentration tank 2 is set to 107°C; , the height of the liquid le...

Embodiment 2

[0045] The safe concentration process of nitrophenol sodium salt wastewater comprises the following steps:

[0046] A1: Concentrate the sodium phenate waste water with 40% of the raw water in a vacuum with the residual steam of the factory building to obtain the pre-concentrated sodium phenate waste water, and transport the pre-concentrated sodium phenate waste water to the waste water pool for storage;

[0047] A2: The pre-concentrated sodium phenate wastewater is transported to the waste water transfer tank 1, and pumped from the waste water transfer tank 1 to the waste water high tank 3, and the pre-concentrated sodium phenate waste water in the waste water high tank 3 is measured and stabilized by a flow meter Conveying into the concentration kettle 2 for concentration, controlling the flow rate of the pre-concentrated sodium phenate wastewater into the concentration kettle 2 to 2.5t / h; In the overflow box 4, the liquid level in the overflow box 4 is always kept the same a...

Embodiment 3

[0050] The safe concentration process of nitrophenol sodium salt wastewater comprises the following steps:

[0051] A1: Concentrate the sodium phenate waste water with 35% of the raw water in a vacuum with the residual steam of the factory building to obtain the pre-concentrated sodium phenate waste water, and transport the pre-concentrated sodium phenate waste water to the waste water pool for storage;

[0052] A2: The pre-concentrated sodium phenate wastewater is transported to the waste water transfer tank 1, and pumped from the waste water transfer tank 1 to the waste water high tank 3, and the pre-concentrated sodium phenate waste water in the waste water high tank 3 is measured and stabilized by a flow meter Conveying into the concentration kettle 2 for concentration, controlling the flow rate of the pre-concentrated sodium phenate wastewater into the concentration kettle 2 to be 2.3t / h; the temperature in the concentration kettle 2 is set to 80°C; In the overflow box 4,...

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Abstract

The invention relates to the technical field of nitro-o-xylene production, and discloses a safe concentration process of sodium nitrophenolate wastewater. The invention further provides a preparationmethod of the traditional Chinese medicine composition. The invention also provides a sodium nitrophenolate wastewater safe concentration system, which comprises a wastewater transfer tank, a concentration kettle, a wastewater elevated tank, an overflow box and a concentrated wastewater storage tank; wherein the concentration kettle comprises a kettle body, a feeding hole and an air outlet are formed in the top wall of the kettle body, and a discharging hole is formed in the bottom wall of the kettle body; a liquid inlet is further formed in the side wall of the kettle body; a discharge port of the concentration kettle is communicated with the bottom of the overflow box through a pipeline, and the bottom wall of the overflow box is higher than the top end of a coil pipe in the concentration kettle. The sodium nitrophenolate wastewater can be safely and efficiently subjected to concentration treatment, and safety accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of nitro-ortho-xylene production, in particular to a safe concentration process and concentration system for nitrophenol sodium salt wastewater. Background technique [0002] The nitro-o-xylene production line will produce a large amount of nitrophenol sodium salt in the washing process. This part of the wastewater has high impurity content and complex components. The current method is to use the waste heat of the adjacent tower and the inter-tower condenser to initially concentrate it. The concentrated mother liquor is directly transported to the incinerator for incineration treatment. Due to the high water content, there are problems such as high cost and insufficient processing capacity. It is necessary to further increase the concentration of nitrophenol sodium salt wastewater and then send it to the incineration process. Incineration, so that the consumption cost is lower and the treatment capacity can ...

Claims

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Application Information

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IPC IPC(8): C02F1/16B01D5/00F23G7/04F23G5/02C02F103/36
CPCC02F1/16B01D5/006B01D5/009F23G7/04F23G5/02C02F2209/02C02F2103/36
Inventor 郑继宽王建辉周盛兵杜成平陈久钧宁萍
Owner 四川北方红光特种化工有限公司
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