3results about How to "High volatile content" patented technology

The present invention belongs to the field of coal energy technology, and in particular to a catalytic improver for raw coal combustion, which is composed of a mixture of metal oxides, iron-containing compounds, metal carboxylates, alumina, rare earths and water, and is characterized in that: the metal oxides include Al 2 O 3 , Fe 2 O 3 , Fe 3 O 4 and MnO 2 ; Iron compounds include FeCl 3 and FeCl 2 ; Metal carboxylates include Mg(CH 3 COO 2 and Na 2 C 2 O 4 ; Alumina is Al 2 O 3 ·3H 2 O; rare earth is La(NO 3 ) 3 The present invention can effectively improve the combustion characteristics of coal, greatly improve the reactivity and combustibility of coal, thereby improving the combustion efficiency of raw coal, reducing energy consumption, and effectively reducing SO in exhaust gas. 2 , CO, and NOx contents, thereby achieving the effect of energy conservation and emission reduction. During boiler operation, the boiler thermal efficiency is increased by 3.11%-3.98%, and the coal saving rate reaches 4-12%, which has good economic benefits.

The invention relates to an alkylation modified carbon-based solid waste coupling direct combustion method, which comprises the following steps: firstly, mixing carbon-based solid waste powder and a tetrahydrofuran solvent, pretreating the carbon-based solid waste powder, introducing N2, stirring for 30 minutes, slowly adding a tetrahydroammonium hydroxide aqueous solution, adding 1-bromobutane, and carrying out alkylation reaction, the method comprises the following steps: adding a tetrahydrofuran solvent into carbon-based solid waste powder, grafting an alkyl group on a functional group on the surface of the carbon-based solid waste powder, adding a diluted hydrochloric acid aqueous solution until the mixed solution is neutral, removing the tetrahydrofuran solvent in the alkylation reaction process by using a rotary evaporator so that only the carbon-based solid waste powder and a reaction product thereof remain in the solution, adding a methanol aqueous solution, and carrying out Soxhlet extraction to obtain the carbon-based solid waste powder. The carbon-based solid waste powder is subjected to vacuum drying, the collected carbon-based solid waste powder subjected to surface alkylation modification and primary air are introduced into a hearth through a combustor to be directly combusted, the combustion temperature is 1500 DEG C, the retention time in the furnace is 2 s, and the advantages of efficient combustion and low nitrogen emission can be achieved.

This utility model discloses a biomass co-firing burner, relating to the field of biomass co-firing power generation technology. It includes a central air duct, a biomass primary air duct, an inner secondary air duct, an elbow, a pulverized coal concentration separation device, a pulverized coal dilute phase primary air duct, a pulverized coal dense phase primary air duct, a middle secondary air duct, an outer secondary air duct, a secondary air diffuser and a middle secondary air cyclone separator, a pulverized coal flame stabilizer, a pulverized coal dilute phase primary air duct cyclone separator, an inner secondary air cyclone separator, a biomass flame stabilizer, an igniter, and a pulverized coal concentration separation adjustment rod. The air ducts, from the center outwards, are: central air duct, biomass primary air duct, inner secondary air duct, pulverized coal dilute phase primary air duct, pulverized coal dense phase primary air duct, middle secondary air duct, and outer secondary air duct. This utility model fully utilizes the advantages of biomass fuel—high volatile content and easy ignition—by igniting the biomass first, significantly reducing ignition costs.