With the development and progress of science and technology, the quality and varieties of alkali sulfide are required to be diversified. Enterprises need to produce different varieties of alkali sulfide according to the needs of different users. A high-tech chemical enterprise in the Philippines, its main products include pure benzene, toluene, tert butyl benzoic acid, industrial alkali sulphide, anhydrous crystalline alkali sulphide, and sodium sulphide crystal. After investigating the manufacturers in the same industry and combining with the actual situation of the factory, the enterprise reformed the caustic soda production system in the evaporation section. In order to improve the utilization rate of coal, the enterprise once purchased a 2.4 million kcal YLW series coal fired thermal oil boiler in Xinli boiler. In order to improve the utilization rate of heat energy, a 2.7 ton YQW series gas fired thermal oil heater was recently ordered from Xinli boiler again.

The products of this enterprise are produced in full accordance with the national and international standards of the Philippines. At present, the annual output is 100000 tons. The products sell well throughout the country and are exported to more than 60 countries and regions such as Europe, America, Africa and Southeast Asia. This 2.7 ton YQW series gas fired thermal oil heater is a new type of key equipment for alkali sulfide production. It can not only improve production efficiency, but also save energy and reduce consumption. It is very suitable for the chemical raw material manufacturing industry.