On July 18th, Qingyuan Environmental Protection Bureau issued the “Work Plan for Qingyuan City to Win the Blue Sky Defence War 2018†(for review), many of which are related to the ceramic industry, including: the Yantai Ceramic Industry Spray Tower and Kiln The exhaust emission standard of the furnace, the NOx emission limit of the ceramic enterprises in the city is tightened to 100mg/Nm3; the ceramics enterprise is promoted to “coal to gasâ€, and 50 production lines of “coal to gas†will be completed before the end of 2018; Supervision, to achieve a number of measures such as online monitoring of third-party operation and maintenance of pollutant emissions from ceramic enterprises.
Pollution control of industrial enterprises is one of the key tasks, including:
Strict emission standards for exhaust gas pollutants: implementation of key industry upgrading and upgrading, and emission standards for exhaust pollutants in spray towers and kiln of ceramic industry in Qingyuan City will be tightened. From December 1, 2018, ceramic enterprises in the city will implement NOx emission. The limit is 100mg/Nm3, the sulfur dioxide emission limit is 30mg/Nm3, and the particulate matter emission limit is 30mg/Nm3. The actual emission totals of the three pollutants indicators of nitrogen oxides, sulfur dioxide and soot are verified monthly, and the emission concentration is implemented. And the total amount of emissions is controlled.
Promote the "coal to gas" of ceramic enterprises: Before December 30, 2018, the ceramic enterprises of Guangzhou Huadu (Qingxin) Industrial Transfer Industrial Park in Qingxin District completed the transformation of "coal to gas", and other regional ceramic enterprises completed 50 before the end of 2018. At the end of 2019, ceramic enterprises in Qingyuan City completed the transformation of “coal to gas†at the end of 2019.
Increasing the amount of clean energy: Accelerate the construction of natural gas pipeline networks. Natural gas pipelines reach most of the city's industrial parks, industrial clusters and industrial boilers with useful gas demand, further promoting the decline in industrial natural gas prices. Promote the development of new and renewable energy sources. Speed ​​up the generation of new energy and renewable energy such as biomass energy and solar energy, and increase the proportion of clean energy used in wind power generation and photovoltaic power generation.
On the other hand, continue to strengthen the supervision of ceramic enterprises:
â— Cancel the flue gas bypass of ceramic enterprises before the end of June 2018. Before the end of August 2018, the number of exhaust gas outlets of ceramic enterprises will be regulated. Before the end of 2018, the third-party operation and maintenance of pollutant emission of ceramic enterprises will be fully realized.
â— VOCs provincial-controlled, city-controlled key enterprises carry out carpet-type investigations, combined with online monitoring data, to carry out night and holiday surprise inspection and law enforcement work. All illegal enterprises such as excessive emission or abnormal operation of exhaust gas treatment facilities shall be suspended for rectification, and enterprises that do not have exhaust gas collection and treatment facilities shall stop discharging. If a crime involving environmental pollution is involved, it shall be transferred to the judicial organ for investigation and punishment.
◠Complete the company's clean production audit and acceptance work. Implement unified management of voluntary and compulsory clean production audits, and complete clean production audits of 40 key ceramics, cement, flat glass and other key industries in 2018 in accordance with the “13th Five-Year Plan†green clean production work implementation plan of Qingyuan City. Acceptance work.
In order to optimize the industrial structure, it is forbidden to build new heavy pollution projects such as ceramics, steel, cement, petrochemicals, flat glass and high-polluting fuel boilers within the city. It is forbidden to build or expand biomass boiler projects within the urban built-up area. Deepen the industrial boiler treatment, formulate and implement the coal-fired boiler elimination exit plan, and complete the elimination of 10 steam tons of coal-fired boilers in Qingcheng District and Qingxin District before the end of 2018. The remaining counties (cities, districts) will eliminate 10 steam tons before the end of 2019. And the following coal-fired boilers.
View all -->Arcing horns are protective devices that are constructed in the form of projections in the conducting materials on both sides of an insulator.
Arcing horns are fitted in pairs. Thus in transmission lines they are found on the conducting line and the transmission tower across the insulators. In transmission lines, in the event of a lightning strike on the tower, the tower potential rises to dangerous levels and can result in flashovers across the insulators causing their failure. Arcing horns prevent this by conducting the arc across the air gap across them.
Arcing horns function by passing the high voltage across the insulator using air as a conductive medium. The small gap between the horns ensures that the air between them breaks down resulting in a flashover and conducts the voltage surge rather than cause damage to the insulator.The horns are constructed in pair so that one horn is on the line side and the other is on the ground side.
Arcing Horns are also used along with air insulated switchgear equipment. Air insulated switchgear are vulnerable to damage due to arcing. Arcing horns serve to divert the arc towards themselves thus protecting the switching equipment. The arcing horns serve to move the arc away from the bushings or the insulators.
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