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Method for turning off secondary absorption concentrated acid pump without stopping production

A secondary absorption, concentrated acid technology, applied in chemical instruments and methods, sustainable manufacturing/processing, inorganic chemistry, etc., can solve the problems of rising production costs and affecting the comprehensive competitiveness of enterprises, and achieve the improvement of operation rate and elimination of Equipment idling and system heating power consumption to meet the effect of cleaner production

Pending Publication Date: 2021-11-12
楚雄滇中有色金属有限责任公司 +1
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AI Technical Summary

Problems solved by technology

During the period of turning on the standby pump, the production system needs to be shut down. After the acid production process is refluxed, the standby pump is turned on to ensure the safety of the absorption tower equipment and the tail gas is stable and up to standard control purposes. During the production period, the equipment is idling, and the electric furnace is kept warm or heated up, which will increase the production cost and affect the comprehensive competitiveness of the enterprise.

Method used

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  • Method for turning off secondary absorption concentrated acid pump without stopping production

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Effect test

Embodiment

[0025] The method for turning on the secondary absorption concentrated acid pump without stopping production comprises the following steps:

[0026] 1) Confirm that the vibration value of the main pump for secondary absorption of concentrated acid exceeds 4.5mm / s, and judge that the abnormal operation of the main pump cannot meet the normal operating conditions, and it is really necessary to turn on the secondary absorption standby concentrated acid pump;

[0027] 2) Determine the pumping time: one of the two converters is in the discharge period, and the other converter is in the stop blowing sampling or feeding period;

[0028] 3) The amount of Aisa furnace material is reduced to less than 60% of the normal production amount;

[0029] 4) Acid system SO 2 Main fan speed adjustment, SO 2 The speed of the fan is reduced from 46HZ to 38HZ, the opening of the pre-reforming air intake valve and the pre-reforming air return valve are opened from about 50% to 80%, the opening of t...

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Abstract

The invention relates to a method for turning off a secondary absorption concentrated acid pump without stopping production, and belongs to the technical field of smelting flue gas acid making. By adjusting the production load of the smelting furnace and increasing the pre-conversion absorption and the primary conversion absorption production load, a standby pump is turned off when the secondary conversion absorption does not bear the production load, continuous and stable operation of a production organization is ensured, the production load of the smelting furnace can be gradually recovered when the standby pump normally operates, the operation rate of a production system is ensured, equipment idling and system temperature rise electric energy consumption are completely prevented, and the relevant standard requirements of clean production, energy conservation and consumption reduction are met.

Description

technical field [0001] The invention belongs to the technical field of producing acid from smelting flue gas, and in particular relates to a method for switching on a secondary absorption concentrated acid pump without stopping production. Background technique [0002] The acid production system from smelting flue gas adopts pre-conversion and pre-absorption + two-stage conversion and two-stage absorption process to produce sulfuric acid. Under normal production conditions, each stage of conversion and absorption bears the production load. According to the production practice in recent years, during the normal production period, the secondary absorption concentrated acid pump of the acid system needs to turn on the standby pump twice a year due to the failure of the equipment vibration value exceeding the standard. During the period of turning on the standby pump, the production system needs to be shut down. After the acid production process is refluxed, the standby pump is ...

Claims

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Application Information

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IPC IPC(8): C01B17/80
CPCC01B17/80C01B17/806Y02P20/10
Inventor 张学兵周尚李雪琼李劲林赵飞金之涛张彩绍李云松杨国林王鑫海吴刻张雷
Owner 楚雄滇中有色金属有限责任公司
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