57results about How to "Easy regeneration" patented technology

The invention discloses a catalytic conversing method of increasing production propylene, which comprises the following steps: injecting preheat crude oil in the main elevating pipe of double-elevating reacting regenerating system; contacting with heat catalyst to proceed catalytic cracking reaction; separating production; recycling re-living agent; injecting liquid propylene in the auxiliary elevating pipe; proceeding olefin superposition; cracking and dehydrogenizing the superposition product; separating production; recycling the re-living agent. The catalyst is compound of two catalysts, which contains first cracking catalyst with Y-typed molecular sieve and second cracking catalyst agent with ZSM-5 molecular sieve, transition metal additive and phosphorus additive with the dried weight rate of first and second catalysts at 10-70:30-90.

The invention is a productive propylene catalytic conversion method, injecting preheated raw materials into the main riser of a double-riser reaction regenerating system to contact with hot catalyst so as to make catalytic cracking reaction, and separating products, where the coked products are recycled after raw catalyst is stripped and regenerated; injecting liquefied gas product into an auxiliary riser to contact with hot catalyst so as to make superposition and catalytic cracking and paraffin dehydrogenation reactions in two reacting regions in the auxiliary riser, respectively, and separating products for recycle after raw catalyst is regenerated. And it further converts the liquefied gas products into propylene, and remarkably raises the yield of propylene on the premise of not increasing the productivity of liquefied gas.

A method for purifying polysilicon tail gas by multilevel adsorption and multilevel regeneration belongs to the technical field of adsorption and separation engineering, comprising the adsorption process of the polysilicon tail gas in a tower, the regenerative process for the tower by utilizing purified hydrogen as well as the adsorption and preparation process of cooling and increasing the pressure carried out on the tower which completes regeneration; wherein, the adsorption process is carried out by the serial adsorption of two towers, and the feeding time of the latter tower lags comparedwith the former tower; the regenerative process is cascade heating regeneration of a plurality of towers, and the heating part of each regeneration tower is completed by being divided into multiple levels. The method has the advantages that the utilization rate of adsorbent is improved and the adsorption period is shortened. The cascade regeneration mode of the purified hydrogen without power cycle causes the hydrogen used for regeneration to be utilized fully and effectively, thus greatly reducing the use amount of resurgent gases and saving the investment of power equipment and power consumption at the same time.

The invention relates to a dividing wall rotary kiln device for flue gas dehydration. The dividing wall rotary kiln device comprises loading equipment, a charging bin, a conveyor, a rotary kiln, waste heat generating equipment and a spare unloading bin, wherein the rotary kiln is a dividing wall rotary kiln, and is composed of an outer ring and an inner ring which are coaxially mounted; a ring-shaped material channel is arranged between the inner ring and the outer ring; the ring-shaped material channel is provided with refractory material support; and a furnace hearth is arranged in the center of the inner ring. The furnace hearth is connected with the waste heat generating equipment by a kiln tail cover. The loading equipment is communicated with the ring-shaped material channel by the loading bin, the conveyor and a charging ring; the ring-shaped material channel is connected with the spare unloading bin by a discharge ring. A wet flue gas inlet is connected with a flue gas pipeline; a gas outlet is divided into two paths, one path is connected with a dry flue gas exhaustion system, and the other path is connected with a condenser; and connecting pipelines are provided with valves respectively. According to the dividing wall rotary kiln device, lime is used as a dryer, and the ring-shaped material channel of the dividing wall rotary kiln is used for drying and dehydrating the industrial flue gas, so that the flue gas diffusion capacity is improved in a facilitated mode, the acid rain and atmospheric contamination is reduced, and the dwelling and living environment of people is improved.