A raw material storage device for producing nitrate in chemical industry

By integrating a waste gas recovery and treatment structure onto the nitric acid storage tank, and utilizing piston baffles and triggering mechanisms to achieve automated waste gas treatment, the problems of space occupation, inconvenient transportation, and resource waste in existing nitric acid storage equipment are solved, thereby improving the flexibility and purification efficiency of the equipment and reducing operating costs.

CN122585560APending Publication Date: 2026-08-18SHANXI LEIXIN CHEM CO LTD
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Patent Information

Application Number
CN202611043593.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-14
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing methods for treating NO2 waste gas from nitric acid storage facilities suffer from problems such as large space requirements, inconvenience in tank transportation, serious resource waste, high maintenance costs, and high leakage risks, making it difficult to meet the actual needs of safe, environmentally friendly, energy-saving, and flexible nitric acid storage in chemical production.

Method used

The waste gas recovery and treatment structure is integrated on the outside of the storage tank body. It adopts an integrated structure and uses piston baffles and triggering mechanisms to realize the sealed temporary storage and automated spray treatment of waste gas. The spray operation is only started when the waste gas accumulates to the set pressure inside the recovery box. The waste gas treatment process relies on the pressure control for automatic start and stop, reducing the consumption of alkali and electricity.

Benefits of technology

It significantly reduces the space occupied by equipment, improves the flexibility of equipment deployment, enhances the efficiency of waste gas purification, reduces operating costs, avoids resource waste, and meets the safety and environmental protection requirements of chemical production.

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Abstract

The application discloses a raw material storage device for nitrate production in the chemical industry, and belongs to the technical field of raw material storage devices, which comprises a storage tank body, relief ports are connected to the two sides of the top of the storage tank body, a breather valve is installed on the relief port, a main pipeline is connected to the air inlet and outlet of the breather valve, and an air inlet pipe is connected to the main pipeline; tail gas recovery mechanisms are symmetrically arranged on the storage tank body, the tail gas recovery mechanisms comprise recovery boxes which are fixed to the storage tank body through supporting rods, the two recovery boxes are connected to the main pipelines on the two sides respectively, a solution tank is fixed to the top wall of each recovery box, and two liquid outlet hoses are connected to the bottom of the solution tank; the raw material storage device can realize automatic spraying after waste gas accumulation reaches a standard and automatic shutdown after a reaction is completed, does not need uninterrupted spraying operation, greatly saves electric energy consumption and alkali consumption, and reduces invalid volatilization and loss of alkali.
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