Tongling Nonferrous Metals Group Co.,Ltd_Non-ferrous metal industry_Suzhou JoyFa Environmental Technology Corp. Ltd.

Non-ferrous metal industry

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Tongling Nonferrous Metals Group Co.,Ltd

Project name: Copper Crown metallurgy industry flue gas treatment salt
Customer unit: Tongling Nonferrous Metals Group Co., LTD
Scheme design: 4t/h+0.5t/h MVR evaporator salt separation system

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Project Introduction

Scheme design: 4t/h+0.5t/h MVR evaporator salt separation system
1. Product scheme: MVR evaporator + sodium sulfate - sodium nitrate salt
2. Water quality and quantity conditions
(1) The evaporator processing capacity is: 100 t/d, running according to 24 h/d, and the water intake is designed according to 5 t/h;
(2) The specific composition of wastewater:

成分	NaNO³	NaNO²	Na²SO³	Na²SO⁴
%	1%-3%	＜0.5%	＜0.5%	15%-20%
Note: Salt water contains trace amounts of cl

3. Crystalline salt and water quality

Serial number	Name	Quality requirement	Remark
1	Anhydrous sodium sulfate	＞98%	Meet the "GB/T6009-2014 industrial anhydrous sodium sulfate" Class II first-class products
2	Sodium nitrate	＞98%	Meet the "GB/T-4553-2016 Industrial sodium nitrate" general industrial qualified products

4. Evaporation capacity of evaporator: 4t/h+0.5t/h, including 1t/h freezing system
5. Evaporator material: TA2

Product Features

MVR is the abbreviation of mechanical vapor recompression technology, which uses the secondary steam and energy generated by the evaporation system itself to compress low-grade steam into a high-grade steam heat source through the mechanical work of the steam compressor. This cycle provides heat energy to the evaporation system, reducing the demand for external energy, thereby improving thermal efficiency, reducing energy consumption, reducing pollution, and achieving the purpose of energy saving.

Project results

1. Realized resource recycling:
Sodium sulfate purity is greater than 98%, industrial dry salt grade, in line with GB/T6009-2014 index requirements.
Sodium nitrate purity is greater than 98%, industrial qualified products, in line with the GBT-4553-2016 index requirements.
2. The operating cost of a ton of water is about 110 yuan, and the operating cost is controlled reasonably to realize the transformation of resources into treasures.
3. The project is a model project of salt separation for the new desulfurization process in the metallurgical industry.

Project site