51results about How to "Reduce burning intensity" patented technology

The invention discloses a compound stopping agent for preventing pulverized coal from spontaneous combustion and a preparation method of the compound stopping agent. The compound stopping agent mainly comprises a component A and a component B, wherein the component A comprises 70%-90% of a penetrant and 10%-30% of peroxide; the component B comprises inorganic salt. The component A and the component B are mixed at a weight ratio of 1:(1.5-3) and used as the compound stopping agent. The preparation method comprises steps as follows: firstly, the penetrant is prepared into an aqueous solution, then the peroxide is dissolved in the penetrant, and the mixture is stirred, so that the component A of the stopping agent is obtained; the component A is matched with the inorganic salt of the component B for use. The compound stopping agent has the characteristics of low cost and non-toxic. During the use, the component A and the component B of the stopping agent are jointly and uniformly added to the pulverized coal, the operation is simple, the stopping effect is excellent, and the compound stopping agent has a wide application prospect.

The invention relates to a hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle which is arranged on a gasification furnace. The hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle comprises a main fuel nozzle which is arranged at the top of a furnace, two steam nozzles which are arranged at the two sides of a furnace arch and two oxygen supply nozzles which are horizontally arranged in a hedging manner, wherein the nozzles are respectively connected with a coal water slurry source, an oxygen source and a steam source, and the openings of the nozzles lead into a hearth of the gasification furnace. According to the invention, an advanced temperature control technology combining a grading oxygen supply temperature control technology and a steam temperature control technology is adopted, combustion intensity and flame temperature in the furnace are effectively reduced, and the aim that ash at the outlet of the gasification chamber is non-fused solid slag; meanwhile, gasification reaction rate and carbon conversion rate are improved, thus gasification solid deslagging on a 'double high' coal type large-scale pressurization entrained bed in China is realized, and the hierarchical oxygen supply and controllable flame coal water slurry entrained bed combined nozzle provided by the invention is especially applicable to industrial application of a high-ash (25-27%) and high-ash-fusing-point (FT is more than 1400 DEG C) coal type large-scale gasification device in China.

The invention relates to a cast-in-place concrete filling tire body. The cast-in-place concrete filling tire body comprises a base body of the tire body and an annular inflation liner which is embedded into the base body of the tire body and is fixedly sealed in the bas body of the tire body. According to the cast-in-place concrete filling tire body, a supporting body is added in a box body of the base body of the tire body to improve the support between the top surface and the bottom surface of the base body of the tire body, and the annular inflation liner is embedded into the base body of the tire body and is capable of supporting each circumferential wall of the base body of the tire body, so that the whole supporting strength of the tire body is higher; once the inflation liner is directly contacted with open fire, the wall of the inflation liner can be burnt, therefore, the burning strength of the inflation liner is low, and the burning time of the inflation liner is short, and furthermore, the problem of the prior art that other objects can be ignited when fillers in the cast-in-place concrete filling tire body are burnt can be solved.