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Device for removing DMF in red wastewater and preparation method thereof

A waste water and red technology, which is applied in the preparation of organic compounds, carboxylate salts, amino compounds, etc., can solve the problems of explosion, unsafe heating and distillation, etc., and achieve the effect of high recovery efficiency and high added value

Pending Publication Date: 2021-11-19
西安思科赛实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing red wastewater treatment method is to recover DMF through distillation process, but heating distillation is very unsafe. When the temperature exceeds 37°C, there is a danger of explosion

Method used

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  • Device for removing DMF in red wastewater and preparation method thereof

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Embodiment Construction

[0032] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0034] The invention provides a device for removing DMF in red wastewater, such as figure 1 As shown, the device for removing DMF in red wastewater includes: mixing box 3, heating tube 4, distillation tube 6, outlet tube 11, collection bottle 10; mixing box 3, heating tube 4, distillation tube 6, outlet tube 11, collection bottle 10 are connected to each other in turn;

[0035] A f...

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Abstract

The invention discloses a device for removing DMF in red wastewater and a preparation method thereof, and relates to the technical field of devices and methods for removing DMF, wherein the device for removing DMF in the red wastewater comprises a mixing box, a heating pipe, a distillation pipe, an outlet pipe and a collection bottle; the mixing box, the heating pipe, the distillation pipe, the outlet pipe and the collecting bottle are sequentially connected with one another; a feeding hole is formed in the upper part of the mixing box, and a wastewater pipe is arranged on the left side of the mixing box; a first stop valve is arranged on the wastewater pipe; a second stop valve, a first thermometer and a first ball valve are arranged on the heating pipe; a pressure gauge and a second thermometer are arranged above the distillation pipe, a bottom cover is arranged below the distillation pipe, and an exhaust pipe is arranged on the right side of the distillation pipe; a third stop valve is arranged on the exhaust pipe; and a second ball valve is arranged on the outlet pipe. The DMF removal rate is as high as 83%, the recovery efficiency is high, and the additional value of the recovered product is high.

Description

technical field [0001] The invention relates to the technical field of a device and a method for removing DMF in wastewater, in particular to a device for removing DMF in red wastewater and a preparation method thereof. Background technique [0002] Nitrification is a reaction process that introduces nitro groups into organic molecules, and is usually used to prepare nitromethane, nitroethane, 1- and 2-nitropropane and other substances. The nitrification process will produce a large amount of red wastewater, which is rich in DMF (N, N-dimethylformamide) substances, which are toxic. When people or animals inhale a large amount of N,N-dimethylformamide continuously, they will Cause weight loss and hinder hematopoietic function; this substance also has a strong stimulating effect on human eyes, skin, and mucous membranes, and its liquid or vapor can cause liver disorders after being absorbed by the skin; if inhaled high concentration of vapor can cause acute poisoning , Chroni...

Claims

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Application Information

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IPC IPC(8): C02F9/10C07C53/06C07C51/41C07C51/44C07C211/04C07C209/62C07C209/86C02F101/38
CPCC02F1/00C02F1/04C07C51/41C07C51/44C07C209/62C07C209/86C02F2101/38C07C53/06C07C211/04
Inventor 陈伟王鹏宝
Owner 西安思科赛实业有限公司
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