Eliminating over 100,000 tons/year of sulfuric acid backward production capacity in Yunnan

China Drying Network News Yunnan Province sulfuric acid manufacturing enterprises in the application for replacement of sulfuric acid production license, because the relevant departments and enterprises on the National Development and Reform Commission, "Industrial Structure Adjustment Guide Catalog (2011)" is not uniform understanding, renew the work of the new card Obstructed, dozens of companies face the fate of stopping production. In response, the reporter conducted a special investigation.

According to the “Catalogue,” sulfuric acid products are involved in both restricted and phased-out categories: in the restricted category, the new sulfur acid production scale should not be less than 300,000 tons/year, and the pyrite acid production scale should not be less than 200,000 tons. /year. In the phase-out category, it is required to phase-out 100,000 tons/year of pyrite-based sulphuric acid and sulphuric acid (except in remote areas). However, due to the inconsistencies in understanding of the “Catalogue” among related departments and enterprises, some enterprises that do not consider themselves to be eliminated are unable to redeem new certificates.

“In Yunnan, many sulfuric acid production enterprises' raw materials are tailings of nonferrous metals and metallurgical enterprises, which is originally an environmental protection project for the comprehensive utilization of resources and has played a positive role in eliminating the pollution of sulfur in the tailings to the environment. I think that the use of metallurgy. Sulfuric acid plants with tailings as raw materials should not be included in the phase-out list.” Chen Bin, vice chairman of Yunnan Pu-Calcium Consortium and chairman of Yunnan Qin Pan Phosphorus Chemical Co., Ltd., told reporters.

Another person in charge of a chemical company stated that flue-gas acid production is also an environmental governance project and should not be included in the scope of elimination. Since the capacity of smelting flue-gas acid production is determined by factors such as the scale of smelting, the smelting and flue gas acid production enterprises should review the smelting capacity as long as the national smelting capacity meets the relevant requirements of the country, as well as the production safety permit and the pollutant discharge permit, regardless of their capabilities. Renewed new sulfuric acid production license.

It is understood that the current sulfuric acid companies are mainly divided into sulfur acid, pyrite (including metallurgical tailings) acid and flue gas acid production of three kinds. In the sulfuric acid production of Yunnan Province in 2011, sulfuric acid production accounted for 65.87% of the province's total sulfuric acid production, and pyrite (sulfur concentrate and metallurgical tailings) and smelting flue gas acid production accounted for the province's sulfuric acid, respectively. 11.68% and 22.45% of the total production.

"Yunnan's sour-acid companies rank among the top in the country in terms of technical equipment, process technology, waste heat recovery and energy utilization, and recycling economy." The head of Yunnan Xingkun Chemical Company told the reporter: "Our company's sulfuric acid plant is small, However, with advanced technology, we should use technology as the standard and eliminate companies that use high energy consumption and high pollution. We shouldn't use production capacity in the same way."

He believes that as long as the rational use of resources, in line with environmental protection policies, advanced technology should be able to normal production. The country limits the scale of steel, electricity and other industries, but the chemical industry is different from this. Although some industries are small, they have high precision and high technical content. Compared with large-scale devices, small-size devices can make reasonable use of resources, which is something that large-scale devices can't do.

However, more companies believe that their sulfuric acid is only an accessory product of phosphate fertilizer and should not be included in the scope of elimination and closure. According to incomplete statistics, there are currently more than 60 sulphuric acid enterprises in Yunnan Province, among which there are 13 enterprises with sulphuric acid production capacity of over 200,000 tons/year; enterprises with sulphuric acid production capacity of 100,000 tons/year to 200,000 tons/year have 23; the remaining annual production capacity of pyrite-based acid and flue-gas acid production enterprises is less than 100,000 tons, and most of them are supporting enterprises of phosphate fertilizer enterprises and smelting enterprises.

“Phosphorus chemical industry is one of the pillar industries of Yunnan's economy. The sulfuric acid production capacity is matched with the capacity of the phosphorous chemical plant. In Yunnan, more than 70% of the sulfuric acid production is used for chemical fertilizers, ie sulfuric acid is an intermediate product. If it is eliminated, it is limited. Sulfuric acid plant capacity, the corresponding phosphorus chemical plant in Yunnan Province, there is no source of raw materials." Chen Bin said.

In this regard, Chen Bin suggested that any phosphorus-based chemical companies established before June 1, 2011 for sulfuric acid production, pyrite-based acid production, and flue-gas acid plant, as long as the technology is advanced and reliable, resources are fully utilized, and energy consumption reaches international and In the domestic advanced level, companies that meet the total device capacity and have both a safety production license and a pollutant discharge permit should be given a review and renewal of the new sulfuric acid production license. In addition, combined with the actual situation in Yunnan Province, in principle, no new sulfuric acid enterprises, such as projects that really need to be built, should strictly abide by the relevant provisions of the national industrial structure adjustment.

Other companies proposed that the “Catalogue” states “to phase-out 100,000 tons/year of pyrite-based sulphuric acid and sulphuric acid (excluding remote areas)”, that is, 100,000 tons/year or less in remote areas. Pyrite-based acid production and sulfur acid production facilities should be retained according to local conditions. Yunnan is located in a border area and is a multi-ethnic area. Its economic level lags far behind coastal areas and transportation costs are high. If all the 100,000 tons/year sulfuric acid plants in the province are eliminated, the cost of outsourcing sulfuric acid for the phosphate fertilizer enterprises will be greatly increased.

A person in charge of the company told the reporter that if the replacement of sulfuric acid could not be resolved in time, it would inevitably affect the survival of a large number of sulfuric acid manufacturing enterprises and related enterprises in Yunnan Province, involving the employment of tens of thousands of people and an output value exceeding 10 billion yuan. He suggested that it should be clear as soon as possible which devices need to be eliminated, so that enterprises can do a good job of preparing as soon as possible.

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