30results about How to "Improve retort effect" patented technology

The invention discloses a co-production system and a co-production method for biomass carbon, gas, wood tar and wood vinegar. The co-production system comprises a biomass dry distillation kettle, a high-temperature heating furnace, a water cooling device, a washing device, a liquid separation device, a gas storage tank, a water-ring vacuum pump, a compressor, wood tar storage tank and a wood vinegar storage tank, wherein the liquid separation device separates wood vinegar and wood tar in the mixed liquid obtained by gas-liquid separation of the water cooling device; the co-production method comprises the following steps: 1, charging; 2, high-temperature carbonization: water cooling and gas-liquid separation, washing, gas storage and separation and storage of liquid matters; and 3, obtaining of the biomass carbon after the high-temperature carbonization. The co-production system for the biomass carbon, gas, wood tar and wood vinegar has the advantages of reasonable design, convenient processing, simple mounting arrangement, easy operation and good effect; and the co-production method has the advantages of convenient realization, high yield, low cost, fast co-production and relatively high production purity and has obvious economic and social benefits and wide popularization and application prospect.

The invention discloses a drying and dry distillation combined quality improving process and a drying and dry distillation combined quality improving system for low rank coal, which are used for overcoming the defects existing in the prior art and are particularly suitable for drying and dry distillation combined quality improvement of brown coal with high water content or other low rank coal such as long flame coal, non-caking coal or weakly caking coal, gas coal and the like. In the process, a combined quality improving method in which a steam revolving drier for drying and a multi-pipe revolving low-temperature dry distiller for dry distillation are provided is adopted, so that the problems of large coking wastewater handling capacity, large coal gas handling capacity and the like existing in a pure dry distillation process are solved. The drying and multi-pipe revolving low-temperature dry distillation combined quality improving process provided by the invention has the advantages of high energy utilization ratio, safe and stable systems, small dry distillation gas handling capacity, small coking wastewater handling capacity, high tar yield, high coal gas heat value and the like.

The invention discloses a multistage pulverized coal multiple-tube rotary low temperature dry distillation technology and system. The multiple-tube rotary dry distillation machine multistage (two stages or more) series connection process is adopted to perform low temperature dry distillation on pulverized coal; a plurality of dry distillation tubes are arranged in the multiple-tube rotary dry distillation machine to disperse coal powder, a helical blade is arranged in each dry distillation tube to guide and disturb coal and reinforce the dry distillation effect and increase the dry distillation effective area, the technology has the advantages of large pulverized coal treatment capacity, large dry distillation gas treatment capacity, low tar and dust contents, high coal gas caloric value and the like; the chemical raw materials generated in the low temperature dry distillation process of bituminous coal and low-price pulverized coal can be recycled extremely, the comprehensive utilization rate of coal is increased; and semicoke powder and coal gas with high calorific value can be produced through the low temperature dry distillation of bituminous coal and low-price pulverized coal.

The invention provides a fluidized bed low-temperature destructive distillation system and a low-temperature destructive distillation method of low-rank coal. According to the method, a mixed gas of hot coal gas produced by a gasification furnace and circulation cold coal gas is adopted as a hot carrier and a fluidizing gas of a destructive distillation reaction. A hydrogen atmosphere of coal gas can provide a partial hydrogenation effect, such that obtained tar has the advantages of high light component content, good quality, high thermal efficiency, and high yield. Also, with the method, a two-stage low-temperature destructive distillation reactor is adopted, such that the retention time of solid particles in the reactor is increased, destructive distillation effect is improved, high solid content in the bed can be maintained, and operation stability can be maintained. The invention also provides a low-temperature destructive distillation reactor. The low-temperature destructive distillation reactor is the two-stage low-temperature destructive distillation reactor, such that the retention time of solid particles in the reactor is increased, and destructive distillation effect is improved. With the two-stage low-temperature destructive distillation reactor, high solid content in the bed can be maintained, and operation stability can be maintained.

The invention discloses a quality-improving technique combining a low-rank coal pneumatic drying with a multi-tube revolving destructive distillation and a system for the same, wherein the technique comprises a coal flow and a hot smoke flow, and both of the coal flow and the hot smoke flow comprise a drying process and a destructive distillation process which are connected with each other; the system comprises a gas flow drying system and a multi-tube revolving destructive distillation system which are connected with each other. The quality-improving technique combining a low-rank coal pneumatic drying with a multi-tube revolving destructive distillation and the system for the same disclosed by the invention realize a cascade efficient utilization for a high-temperature smoke, and increase the energy utilization rate of the whole system. The quality-improving technique combining a low-rank coal pneumatic drying with a multi-tube revolving destructive distillation and the system for the same disclosed by the invention have the advantages of high energy utilization rate, safe and stable system, small treatment capacity for destructive distillation gas, small treatment capacity for coking wastewater, high yield of tar, high calorific value of coal gas etc. The quality-improving technique combining a low-rank coal pneumatic drying with a multi-tube revolving destructive distillation and the system for the same disclosed by the invention also can recover chemical raw materials such as coal tar generated during a low-rank coal low-temperature destructive distillation process, and increase the comprehensive utilization rate of coal. Via the technique, a powdery or granular semicoke which is low in volatile matter, high in low caloric value and good in stability is produced by a quality-improving technique using a low-rank coal low-temperature destructive distillation. The technique is suitable for producing a civil or industrial coal gas with a medium caloric value by a quality-improving technique using a low-rank coal low-temperature destructive distillation.

The invention relates to a production method for co-production of bamboo charcoal and bamboo vinegar. The production method includes the following steps that S1, raw materials are selected; S2, moso bamboos are crushed, wherein the moso bamboos with the branches and leaves are crushed into 3-5 mm blocks according to the technological requirement, soaking with a pretreatment solution is conducted for 1-2 h, drainage is conducted, and then the objects are pre-dried at 60-70 DEG C until the water content is 20-25 % and sent to a pre-heating mechanism through a feeding mechanism, the pretreatmentsolution is prepared from, by weight, 3-8 % of water insoluble dextran, 10-15% of sodium hydrogen carbonate, 2-5% of aminophylline and the balance deionized water; S3, pre-heating is conduced; S4, pyrolysis is conducted; S5, carbonization is conducted; S6, bamboo vinegar purification is conducted, wherein bamboo vinegar obtained in the step 3 and bamboo vinegar obtained in the step 4 are mixed, anadsorption treatment agent is added in the mixture, then the mixture is stirred evenly, treated for 0.5-1 h and fully filtered, and the finished product of bamboo vinegar is obtained, the adsorptiontreatment agent refers to modified sepiolite powder. The production efficiency is high, the product yield is high, the degree of automation is high, and through organic coordination of the various mechanisms, the requirement of industrialized co-production of bamboo charcoal and high-quality bamboo vinegar can be met.

The invention relates to a municipal sludge destructive distillation carbonation test system and belongs to the technical field environment engineering. The test system comprises a destructive distillation reaction device, a gas-liquid collecting device, a gas treatment device and a control device. The municipal sludge destructive distillation carbonation test system has the advantages that a vacuum pump and one-way valve used by the destructive distillation reaction device vacuumize a reaction kettle before the destructive distillation of sludge, the risk of explosion is avoided, and system safety is guaranteed; each of the reaction kettle and a reaction kettle cover adopts a sandwich structure, a thermal-insulation layer is arranged in each sandwich layer, the temperature in the reaction kettle is guaranteed, and heat loss is lowered; a condenser and a cooling-water machine effectively guarantee the condensation separation effect of destructive distillation products; a gas burner guarantees that tail gas can meet standards; the destructive distillation products can be sampled and analyzed at any time, the temperature of each link can be monitored in real time, and destructive distillation parameters can be optimized conveniently; system parameters can be set on the control device, the control device treats data, and system efficiency is increased greatly.

The invention aims to provide a solid fuel spiral dry distillation machine. The machine comprises feeding equipment and destructive distillation equipment; the machine further comprises a fuel filter,a temperature-unloading charcoal-discharging device and a curve hot-blast stove; the fuel filter comprises a charging barrel; a fuel inlet pipe at the top of the charging barrel is connected with thedischarging end of the feeding equipment; a discharging conical pipe at the bottom of the charging barrel is connected with the feeding hole of the dry distillation equipment; an air output pipe is mounted on the side surface of the charging barrel; the dry distillation equipment comprises a dry distillation machine barrel, two rotary sealing pieces and a first hollow spiral barrel; the two rotary sealing pieces are arranged on the two sides of the dry distillation machine barrel; the first hollow spiral barrel comprises a first hollow spiral sheet and hot air barrels welded to the two sidesof the first hollow spiral sheet in a sealed mode; the first hollow spiral barrel is coaxially and rotatably mounted in the dry distillation machine barrel; the hot air barrels at the two ends of thefirst hollow spiral barrel extend out of the rotary sealing pieces; and overflowing holes communicated with the rotary sealing pieces are formed in the hot air barrels.

The invention provides a heat storage type heating separating device, and relates to the technical field of dry distillation equipment. The heat storage type heating separating device comprises a dry distillation device, a first heating device, a first heat storage device and a first driving device. Feed inlets, a discharge outlet and a gas outlet are formed in the dry distillation device; the first heating device is positioned on a side of the dry distillation device; the first heat storage device is of a closed ring structure, one end of the first heat storage device is positioned in the first heating device, the other end of the first heat storage device is positioned in the dry distillation device, the first driving device is used for driving the first heat storage device to carry out circulating rotation, and a combined sealing device is arranged between the first heating device and the first heat storage device; the feed inlets are formed in the left end of the top of the dry distillation device and are particularly formed in positions above the first heat storage device; the discharge outlet is formed in the end, which is far away from the feed inlets, of the bottom of the dry distillation device and is particularly formed in the rear of the first heat storage device. Compared with the prior art, the heat storage type heating separating device has the advantages that the heat storage type heating separating device is safe and stabile in running, simple in structure and high in dry distillation efficiency, and obtained dry distillation gas phases are good in quality.

The invention belongs to the field of novel heating cigarettes, and particularly relates to a method for improving the smoking stability and the heat utilization rate of a heated cigarette. According to the method, the cigarette is prepared through the following operation, the cigarette comprises a fuming medium section, the fuming medium section is prepared by wrapping a fuming medium rod (1) with composite cigarette paper (2), and the composite cigarette paper (2) is prepared through the following steps that a first cigarette paper layer (2a), a graphite paper layer (2b) and a coating layer (2c) are bonded through an adhesive layer (2m) to form the composite cigarette paper (2), and the coating layer (2c) is in contact with the fuming medium rod (1). According to the invention, the uniformity of substance release in the smoking process is effectively improved, the smoking stability is better, and the amount of smoke which can be smoked by 12 mouths is not obviously reduced.

The invention relates to a novel dry distillation furnace for performing dry distillation on oil shale. The novel dry distillation furnace comprises a furnace body, wherein a material distribution structure is arranged in a dry distillation section in the furnace body; an arch table wind shoe structure is arranged in a generating section; a gas distribution structure is arranged at the bottom in the furnace body. The novel dry distillation furnace has the advantages that the dry distillation cross section intensity can be increased to a value being 1500kg/m<2> or more which is higher than that of the existing fushun 100t/d furnace; the raw material processing quantity can be obviously improved; the oil yield can be improved by 10 percent or higher; the novel dry distillation furnace can realize the amplified design of the processing capability exceeding 100t/d; the small-proportion adaptive processing of small-particle oil shale of 20mm or below 20mm can be realized to a certain degree; a novel path is opened for small-particle oil shale oil refining in China.