37results about How to "Calorific value" patented technology

Multilayer expanded polypropylene resin beads that are heat moldable at low steam pressure and can provide an expanded mold with sufficient rigidity and heat resistance. The beads are formed from a polypropylene resin and a coating layer formed from a different polypropylene resin. The multilayer expanded resin beads can be molded in-mold at a steam pressure lower than the steam pressure for molding single-layer expanded beads made from the polypropylene resin which forms the core layer. The coating layer to core layer resin weight ratio in the multi-layer resin beads is not less than 0.001 and not greater than 0.040 and the expansion ratio of the expanded beads, the average value of the thickness of the coating layer of the expanded beads, calculated based on the coating weight ratio of the multi-layer resin beads, is not less than 0.1 μm and not greater than 3.0 μm.

The invention relates to a biomass fuel moulding machine, belonging to the technical field of fuel moulding machinery. The biomass fuel moulding machine comprises a rack, a power transmission mechanism arranged on the rack, an extruding mechanism which is arranged on the rack and is connected with the power transmission mechanism, a material collection tank fixed on the rack, a first material collection mechanism arranged at one side of the material collection tank, a second material collection mechanism arranged at the other side of the material collection tank, a feeding mechanism which is matched and connected with the first material collection mechanism and is also matched and connected with the second material collection mechanism and a solid material guiding mechanism which is fixedon the material collection tank and corresponds to a punch hole, wherein the material collection tank is internally provided with a four-way sleeve, the four-way sleeve is provided with a charging through hole and the punch hole, and the extruding mechanism is matched with the punch hole. The biomass fuel moulding machine provided by the invention has the advantages that: the biomass fuel moulding machine has ideal compactness and intensity, thus being beneficial to improving the heat value and being beneficial to transportation and storage; the moulding efficiency is good, thus the requirement for realizing batch production of solid biomass fuel can be met; and the overall structure configuration is reasonable, and the operation requirement is low, thus being easy to use and maintain.

The invention relates to a gradually-expanding premixing porous medium combustor for combusting biomass gasification gas. The combustor is provided with gradually-expanding pipes, wherein a porous medium with catalytic action is filled in each gradually-expanding pipe; a heater is coated outside each gradually-expanding pipe; each gradually-expanding pipe is wholly embedded into a thermal insulating layer; a capacity expansion chamber is formed at an inlet of each gradually-expanding pipe; a tempering prevention piece and a flow equalization plate are arranged in each capacity expansion chamber; and an inlet of each capacity expansion chamber is connected with a premixing tube. Flame deflection and other unstable combustion phenomena can be avoided, flames can be effectively prevented from being blown out of the combustor, the power of the combustor is improved, the working range of the combustor is expanded, and the load and working condition changes of the combustor are met. Moreover, the combustor has a function of adjusting gas flow, and parallel gradually-expanding pipes are prevented from being shut down due to over-low load or prevented from being subjected to over-high load; and the biomass gasification gas can be subjected to super adiabatic combustion in the combustor, the lean flammability limit of fuel is greatly expanded, and the fuel with ultralow heat value can be stably combusted. Meanwhile, the flame area is widened, the combustor contributes to accelerating cracking combustion of tar, and the combustion efficiency is improved.

The invention belongs to the field of energy utilization, and relates to a device and technique for preparing biological oil by microalgae hydrothermal liquefaction by using power plant steam turbine extraction steam. The power plant steam turbine extraction steam is high-temperature high-pressure steam, and the quaternary extraction steam is used for hydrothermal liquefaction reaction of microalgae. The quaternary extraction steam of the steam turbine is divided into two streams, one stream is directly introduced into an inner interlayer of a high-pressure autoclave, and other stream is introduced into an outer interlayer of the high-pressure autoclave as a heat source. In the microalgae hydrothermal liquefaction reaction, the microalgae and ethanol are proportionally fed, a reticular filter layer is arranged inside the high-pressure autoclave, and an HZSM-5 catalyst is arranged. The steam of the power plant steam turbine after applying part of work is fully utilized, the pressure and temperature of the steam are utilized in the technique for preparing biological oil by microalgae hydrothermal liquefaction reaction, the conventional hydrothermal liquefaction technique is improved, the electric heating is utilized to reach the solvent critical value, and abundant energy consumption is lowered, thereby lowering the cost for preparing the biological oil, improving the oil preparation efficiency and enhancing the oil product.

A method for producing a vacuum insulation material includes producing a core by molding a core starting material composition, containing a talc-based clay mineral, a potassium compound and an organic solvent, into a predetermined shape to yield a core molded body, and firing the core molded body at a temperature that is lower than the melting point of the talc-based clay mineral. The core is vacuum-packaged with a gas barrier packaging material, to thereby produce a vacuum insulation material.

Obtain a first value as an index of thermal conductivity and a second value as an index of thermal diffusivity of the fuel gas to be measured at a first temperature, a second temperature, and a third temperature that are different from each other by the measurement unit (101). , use the rate of change calculating part (102) to obtain the temperature change rate κ of the first value between the first temperature and the second temperature measured by the measuring part (101) 1 , the temperature change rate κ of the first value between the second temperature and the third temperature 2 , the temperature change rate α of the second value between the first temperature and the second temperature 1 , the temperature change rate α of the second value between the second temperature and the third temperature 2 , using the calorific value calculation unit (103) to pass κ 1 , κ 2 、α 1 、α 2 As an explanatory variable, the calorific value calculation formula using the calorific value as the target variable calculates the calorific value of the fuel gas.

The invention belongs to the technical field of sludge treatment, and specifically relates to a sludge dehydrating agent, which is composed of lime and carbonization residue; the particle size of the carbonization residue is 30-500 μm, the hydrophobic angle is 91-97°, and the specific surface area is 220 ~300m 2 / g. The invention also provides a method for reducing the water content of the sludge and utilizing the sludge as a resource based on the sludge dewatering agent. The present invention innovatively finds that the dry distillation residue and lime with the particle size, hydrophobic angle and specific surface area have synergy in sludge dehydration, which can synergistically reduce the specific resistance of sludge and effectively improve the dewatering performance of sludge. Not only that, but also The calorific value of the treated sludge can be increased, so that the treated sludge can be directly used as solid fuel to realize high-value utilization.

The invention discloses a method for preparing fructan and gluconic acid by using inulin and belongs to the technical field of separation and purification. The method comprises the following steps: by taking commercially available inulin as a raw material, preparing a sucrase hydrating solution; preparing glucose oxidase treating fluid; preparing an ultrafiltration separating solution; preparing a gluconic acid separating solution; preparing a gluconic acid concentrated solution; preparing a fructan separating solution; preparing fructo-oligosaccharide powder and polyfructose powder, thus obtaining two fructan powder and gluconic acid solution with the mass percent concentration of 10 to 15 percent. According to the technical scheme provided by the invention, a product with high added value is produced by the operations of enzymatic hydrolysis, separation and concentration; the product is high in purity and definite in application; the quality of the product meets the requirement of market; used production equipment is industrial equipment, namely separating devices such as a nanofiltration device, an ultrafiltration device, a reverse osmosis device and an electrodialysis device; the production equipment is mild in separation condition and high in separation efficiency; the adopted raw materials and solvent can be completely utilized, and no three wastes are discharged; the method is a classical green technology and facilitates popularization and application.

The invention relates to an inferior heavy oil fluidization conversion technology. The inferior heavy oil fluidization conversion technology comprises that raw material oil is treated by a fractionating tower, then enters into a lifting pipe reactor, undergoes a contact reaction with coke carriers from a coke carrier mixer, then enters into a first gas-solid separation device and is separated; the separated reaction oil gas is fed into the fractionating tower and is subjected to product division; the coke carriers with coke is stripped and is divided into two parts, one of the two parts is fed into the coke carrier mixer, then is mixed with the high-temperature coke carriers from a vaporizer and then is fed back to the lifting pipe reactor, and other one of the two parts is fed into the vaporizer, contacts with oxygen-containing gas and water vapor and undergoes a gasification reaction; the produced synthetic gas is separated by a second gas-solid separation device, is fed into a follow-up section, and is subjected to heat recovery and conversion; and the vaporized coke carriers are fed into the coke carrier mixer and is mixed with the coke carriers with the coke. Compared with the prior art, the inferior heavy oil fluidization conversion technology has the advantages of simple process, low investment, strong raw material adaptability, good product distribution and good environmental benefits.

The invention relates to a fuel oil composition suitable for bunker fuel oil industry, industrial generation, civil boilers and the like. The fuel oil composition comprises the following materials: 10-60 parts by weight of heavy oil residues as petroleum byproducts, 5-50 parts by weight of low-temperature coal tar, 5-53 parts by weight of light fuel oil and 2-20 parts by weight of diesel oil or absorber oil. A fuel oil finished product prepared from the fuel oil composition has the advantages of good cleanness and stability, low abrasion and corrosion effects on combustion equipment and favorable storage stability.

The invention discloses a continuous and sealed feeding system for classified incineration of hazardous waste. The feeding system comprises a bulk material feeding sub-system, a bagged material feeding sub-system and a liquid material feeding sub-system, and the bulk material feeding sub-system, the bagged material feeding sub-system and the liquid material feeding sub-system are used for conveying bulk materials, bagged materials and liquid-state hazardous waste to an incinerating device correspondingly in a continuous and sealed mode. By means of the continuous and sealed feeding system, hazardous waste can be conveniently subjected to heat value detection and chemical proportioning, and therefore process parameters in the incinerating device can be accurately controlled, and stable, safe and efficient operation of the incinerating device is guaranteed.