T/CPCIF 0174-2021 Active Group standards

T/CPCIF 0174-2021 In-situ Recycling Treatment Engineering Technical Specification for Nitrified Waste Sulphuric Acid

Publish Date: 2021-12-30 Implement Date: 2022-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPCIF 0174-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection

ICS Name: Waste disposal and treatment equipment and devices

Publish Date: 2021-12-30

Implement Date: 2022-04-01

Scope

Scope: This document specifies the technical requirements for the design, construction, operation, and maintenance of in-situ recycling treatment projects for nitrate-containing waste sulfuric acid. This document is applicable to waste acid treatment projects aimed at the in-situ recycling of nitrate-containing waste sulfuric acid, and can be used as a technical basis for engineering consulting, design, installation, acceptance, and operation management. Main technical content: 5.3 Device configuration 5.3.1 The in-situ recycling treatment device for nitrate-containing waste sulfuric acid typically includes a nitric acid concentration or denitrification unit, a sulfuric acid concentration unit, and a nitrogen oxide absorption unit. 5.3.2 The main process equipment of the nitric acid concentration or denitrification unit includes a denitrification tower (concentration tower), a heater, a condenser, a bleaching tower, and an intermediate tank for dilute nitric acid, etc. 5.3.3 The main process equipment of the sulfuric acid concentration unit includes a concentrator, a scrubbing tower, an acid-acid heat exchanger, a finished acid cooler, a circulating pump, a flash tank, a high-level tank for waste acid, an intermediate tank for acidic wastewater, and an intermediate tank for sulfuric acid, etc. 5.3.4 The main process equipment of the nitrogen oxide absorption unit includes a nitrogen oxide compressor, a nitrogen oxide absorption tower, a silencer, an intermediate tank for dilute nitric acid, a heat exchanger, and a circulating pump, etc. 5.3.5 Other facilities including auxiliary facilities such as circulating water, desalinated water, and chilled water, as well as public utilities such as power supply, gas supply, and steam supply, and waste acid pretreatment facilities should be centrally equipped outside the site boundary.