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Waste acid recovery system and method

A technology of acid recovery and phosphoric acid, applied in chemical instruments and methods, copper nitrate, carboxylate preparation and other directions, can solve problems such as low removal efficiency, achieve obvious environmental protection benefits and save water resources.

Pending Publication Date: 2020-09-18
绵阳市鑫科源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Aiming at the problem of low removal efficiency of the above-mentioned existing waste acid recovery systems and methods, the present invention provides a waste acid recovery system and method

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  • Waste acid recovery system and method

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0030] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawi...

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Abstract

The invention discloses a waste acid recovery system, which comprises a waste acid pre-rectification device (1), the waste acid pre-rectification device (1) is connected with a phosphoric acid pre-rectification device (4); and the phosphoric acid pre-rectification device (4) is communicated with a post-treatment device (9). Resourceful, harmless and cyclic comprehensive utilization of waste acid is realized; poisonous and harmful substances in the waste acid are recycled, valuable components are recovered and made into phosphoric acid, acetic acid and copper nitrate; phosphoric acid, acetic acid and copper nitrate can be directly sold as chemical raw materials, returned to the market again and utilized; generated calcium fluoride and calcium sulfate are treated as general waste, and generated waste gas is treated by an environment protection device and then discharged after reaching the standards.

Description

technical field [0001] The invention relates to the technical field of waste acid recovery and treatment, in particular to a waste acid recovery system and method. Background technique [0002] In industrial production, industrial acids (such as organic or inorganic acids such as sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, fluorosilicic acid, phosphoric acid, and acetic acid) are used as raw materials, and industrial production devices cannot be reused and are forced to discharge The acids are collectively referred to as spent acids. Waste acid is usually produced in the process of nitration, esterification, sulfonation, alkylation, catalysis and gas drying of organic matter, or in the process of titanium dioxide production, steel pickling and gas drying, and etching in the electronics industry and photovoltaic industry . [0003] According to the comprehensive survey and statistics of the industry, the inorganic waste acid accounts for about 65% of t...

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Application Information

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IPC IPC(8): C02F9/10C01B25/234C01F11/22C01F11/46C01G3/08C07C51/02C07C51/44C07C53/08C02F101/10C02F101/12
CPCC02F9/00C01B25/2346C01G3/08C01F11/22C01F11/46C07C51/02C07C51/44C02F1/04C02F1/26C02F1/283C02F2001/007C02F1/583C02F1/58C02F2101/101C02F2101/12C02F2101/105C07C53/08
Inventor 刘建波舒宇陈琴陈保勇
Owner 绵阳市鑫科源环保科技有限公司
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