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Dilute sulfuric acid concentration and recovery system

A recovery system, dilute sulfuric acid technology, applied in sulfur trioxide/sulfuric acid, sulfur compounds, inorganic chemistry, etc., can solve the problems of inability to meet process requirements, high energy consumption, substandard concentrated sulfuric acid mass fraction, etc., to reduce construction costs and operating costs, less equipment, and the effect of improving economic and social benefits

Pending Publication Date: 2019-07-26
胡平
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing dilute sulfuric acid concentration and recovery system consumes a lot of energy, and the mass fraction of concentrated sulfuric acid does not meet the standard and cannot meet the technical requirements.

Method used

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  • Dilute sulfuric acid concentration and recovery system
  • Dilute sulfuric acid concentration and recovery system

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically conn...

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Abstract

The invention relates to the technical field of dilute sulfuric acid concentration, in particular to a dilute sulfuric acid concentration and recovery system which comprises a dilute sulfuric acid preheating device, a vacuum concentration device and a concentrated sulfuric acid recovery device. The dilute sulfuric acid preheating device comprises a heat exchanger and a first heater, the vacuum concentration device comprises a concentration kettle, a first inlet of the heat exchanger is connected with a dilute sulfuric acid source, a first outlet of the heat exchanger is communicated with an inlet of the first heater, an outlet of the first heater is communicated with an inlet of the concentration kettle, an outlet of the concentration kettle is communicated with a second inlet of the heatexchanger, and a second outlet of the heat exchanger is communicated with the concentrated sulfuric acid recovery device. The two-stage preheating device and the vacuum concentration device are used for effectively concentrating dilute sulfuric acid, the process is short, equipment is less, temperature needed by dilute sulfuric acid concentration and recovery can be ensured, the mass fraction of concentrated sulfuric acid formed after concentration can reach needed technological standards, energy consumption is greatly reduced, the system is efficient and practical, and the applicable range and the stability of the technology are enhanced.

Description

technical field [0001] The invention relates to the technical field of dilute sulfuric acid concentration, in particular to a dilute sulfuric acid concentration recovery system. Background technique [0002] At present, sulfuric acid is an important basic chemical raw material, which is widely used in chemical industry, iron and steel and other industries. It is often used as dehydrating agent, reaction intermediate, cleaning agent, catalyst, etc. in industry. The used sulfuric acid is usually reduced in concentration or becomes dilute sulfuric acid containing impurities, which can no longer be used in production. Therefore, the sulfuric acid used in many industrial processes is finally disposed of as waste acid or discharged after simple treatment, causing serious waste of resources and environmental pollution. question. [0003] With the development of the chemical industry and the demand for environmental protection, dilute sulfuric acid is generally concentrated, recove...

Claims

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Application Information

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IPC IPC(8): C01B17/88C01B17/90B01D53/78B01D53/68B01D3/14B01D3/10B01D1/30B01D1/00
CPCC01B17/88C01B17/90B01D3/148B01D1/00B01D1/30B01D3/10B01D53/78B01D53/68B01D2257/2064
Inventor 胡平吴新君
Owner 胡平
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