88 results about "Dry distillation" patented technology

The utility model relates to a raw gas source upgrading system for an internal heating type vertical furnace. The raw gas source upgrading system comprises a dry distillation furnace, a carbon dioxide removal device and a pure oxygen preparation device, the device further comprises a first multi-stage mixer, a second multi-stage mixer, a gas sampling analysis tube and a gas component detector. Pure oxygen is adopted as a combustion improver, so that the content of nitrogen in the raw gas is greatly reduced, and the application scene of coal gasification production and deep processing of the internal heating type vertical furnace is expanded; the components of combustion-supporting gas, combustible gas and inert gas in mixed gas in a lattice wall of the dry distillation furnace are controlled by adopting double-circulation control of carbon dioxide and recirculated gas, the combustion intensity and the uniformity degree are strictly controlled under the condition that dry distillation heat supply is met, and scabbing and burning loss of a dry distillation furnace body are avoided.

The invention relates to the field of coal moisture detection, in particular to a coal moisture dynamic infrared detection system and method. The system comprises a reactor, a material container, a detector and a parallel double-gas-path control gas path, the reactor provides a high-temperature environment (200 DEG C), and coal sample moisture is subjected to dry distillation through a heater; the material container is of an open aluminum structure, so that the coal sample is thin and uniformly heated; the detector detects the water vapor concentration carried by the carrier gas in real time and converts the water vapor concentration into a voltage signal; and the gas path control part switches a carrier gas path through an on-off valve, so that rapid switching between a reference value and real-time detection is realized. The method comprises the following steps: dynamically monitoring absorbance, carrying out integral calculation on total absorbance, and substituting the total absorbance into a quadratic function fitting model (W = a. As + b. As + c) to obtain the moisture content. Static balance waiting is not needed, the detection time is shortened, the device structure is simplified (no pressure detector is used), and the method is suitable for rapid batch detection scenes.

According to the present invention, coal for producing coke or mixed coal for producing coke that includes coal and waste plastic for mixing is charged into a carbonization chamber (2) of a coke oven (1) and dry distilled to produce coke (13). When the dry distillation is complete, a portion or all of a plurality of charging ports (4 (4a–4d)) that are provided in the carbonization chamber of the coke oven are used to charge waste plastic (14 (14b–14d)) into an upper space (5) that is above the coke inside the carbonization chamber in order from the charging port closest to an ascension pipe (3) to the charging port farthest from the ascension pipe. The present invention thereby provides a waste plastic processing method that makes it possible to keep pyrolysis gas from waste plastic from leaking or erupting from charging ports.

The application discloses an oxide-sulfide S-type heterojunction composite photocatalyst as well as a preparation method and application thereof. x The oxide-sulfide S-type heterojunction composite photocatalyst is prepared by adding WO x into ethanol, uniformly ultrasonic dispersing, and then performing heating and dry distillation. The application successfully constructs a tungsten oxide and cadmium sulfide heterojunction, has good light response, utilizes a heterojunction interface formed by the two catalysts and having a synergistic effect, improves the photocatalytic hydrogen production capacity, and promotes selective oxidation of benzyl alcohol. The application has simple operation and good repeatability.

The utility model discloses a composite heating dry distillation furnace. The composite heating dry distillation furnace comprises a furnace body used for dry distillation, electric heating equipment used for absorbing green electricity and heating gas to generate high-temperature gas, a combustor used for generating the high-temperature gas and a fan used for pressurizing the gas and then feeding the gas into the electric heating equipment, and the fan is connected with the electric heating equipment. The electric heating equipment is connected with the furnace body or the combustor through a pipeline, and the combustor is connected with the furnace body; high-temperature gas required by the furnace body is supplied by heating gas of electric heating equipment, or high-temperature gas generated by the combustor is supplied to the furnace body. The composite heating gas retort disclosed by the utility model can consume green electricity and reduce gas consumption.

This invention discloses a multi-component refined compound of clove obtained by dry distillation, its preparation method, and its application. The preparation method involves: placing clove powder in a high-temperature dry distillation reactor for localized puffing reaction to obtain eugenol; mixing the puffed clove powder with a composite solvent and then repeatedly heating and extracting the mixture to obtain a precursor of the refined compound; centrifuging the precursor and collecting the supernatant to obtain the final product. This method, through localized puffing reaction, significantly increases the bulkiness of the clove powder, effectively enhancing the release of aroma compounds such as eugenol, acetyleugenol, and caryophyllene from the clove; using this refined compound as a flavoring agent in heated non-combustible cigarettes effectively improves the richness and fullness of the smoke.

The invention discloses an internal and external simultaneous heating type low-temperature dry distillation system and process, which are suitable for 0-30mm set particle solid raw materials (the low-rank coal is 0-50mm) and can be applied to the fields of oil shale dry distillation, lignite upgrading and the like, and products comprise coke, semi-coke, tar and dry distillation gas. The core of the system is a horizontal rotary sleeve type dry distillation furnace, a drying bin and a dry distillation bin which are coaxial are arranged in the horizontal rotary sleeve type dry distillation furnace, and an annular space is formed by an outer cylinder and an inner bin. High-temperature hot flue gas in the annular space is subjected to radiation and conduction heat transfer, and hot slag is backmixed according to the proportion of 1 / 4-1 / 3 of materials in the bin, so that direct heat transfer is achieved; heat energy is utilized in a gradient mode, waste heat is subjected to gas-solid heat exchange, and fluid is mixed and recycled. According to the process, drying, destructive distillation and combustion are integrated in one furnace, energy output loss of a traditional process is avoided, generation of nitric oxide is inhibited through low-oxygen combustion, and moisture removed through drying can be recycled. The heat efficiency is high, integration is high, the operation and maintenance cost is low, and efficient resource utilization of low-quality solid raw materials is achieved.

The application provides a system and method for coupling new energy water electrolysis hydrogen production and solid waste resources, and the system comprises: a wind power generation unit, comprising an output end for supplying power to the outside; a hydrothermal carbonization unit connected with the output end of the wind power generation unit and comprising a first biochar unit and a first carbonization chamber for hydrothermal carbonization of biomass; a drying unit connected with the output end of the wind power generation unit and connected with the first biochar unit; a dry distillation carbonization unit connected with the output end of the wind power generation unit and comprising a tar collection unit, a second biochar unit, a pyrolysis gas collection unit and a second carbonization chamber for dry distillation carbonization of biomass; a water electrolysis hydrogen production unit connected with the output end of the wind power generation unit and comprising an electrolytic tank; and a methane preparation unit connected with the water electrolysis hydrogen production unit, the pyrolysis gas collection unit and the second biochar unit.

The utility model discloses a novel scattered and discharged gas collecting device of a shale oil refining device, which belongs to the technical field of oil shale oil refining waste gas emission and comprises a dry distillation furnace body, a combustion fan, a heat accumulating type heating furnace, a desulfurizing tower, a desulfurizing circulating pump and a chimney. According to the device disclosed by the utility model, the top of the water basin of the dry distillation furnace is blocked by the blocking coaming, so that waste gas generated in the water basin of the dry distillation furnace is guided into the condensation and gas collection box through the waste gas guide-out pipe to be collected, and steam in the waste gas is condensed by utilizing cooling water in the heat exchange copper pipe in the condensation and gas collection box; and the waste gas enters the heat accumulating type heating furnace through the combustion fan, so that the waste gas is directly combusted together with combustion gas in the heat accumulating type heating furnace, the combusted waste gas and flue gas enter the flue gas desulfurization system together for desulfurization and dust removal, and the flue gas is discharged after reaching the standard through a chimney.

The present invention relates to a drying apparatus for evaporating volatile constituents from a starting material to be dried, to a process for producing an isocyanate using this drying apparatus and to the use of the drying apparatus for drying distillation bottoms streams, oil-containing waste, waste paint or coating materials, sewage sludges, mineral substances and coal slurries contaminated with organic compounds. In the drying apparatus the evaporated constituents (vapours) are passed into a condenser via a vapor dome and a vapor conduit. The drying apparatus has the feature that partial condensation of the vapours in the vapor dome and / or in the vapor conduit is intentionally allowed or induced during operation, and condensed constituents of the vapours are discharged from the drying apparatus via means installed for this purpose in the vapor dome and / or the vapour conduit.

An optimization method for a directional preparation technique and efficient use of semi-coke for blast furnace injection. Firstly, the volatile and the ash content of target semi-coke are preset, and then the volatile and the ash removal percentages of a raw coal are calculated; after ash removal, several sets of dry distillation carbonization temperatures and carbonization times are obtained according to the volatile removal percentage, and the relationships between a combustion rate, abrasiveness, explosiveness and jet flow property and the carbonization temperature are respectively established to obtain the optimal actual carbonization temperature; and semi-coke for blast furnace injection is obtained at an actual carbonization temperature. The directional preparation is suitable for the semi-coke for blast furnace injection, and an optimal coal-compounding scheme is obtained, thus achieving the efficient and safe injection of blast furnace iron-making fuels, and energy conservation and emission reduction.

The present application relates to the field of waste incineration, and discloses a waste incineration flue gas waste heat driven molten salt heat storage multi-element heat energy utilization system, comprising: a flue gas purification pretreatment unit, a high-temperature corrosion-resistant heat exchange unit connected with the flue gas purification pretreatment unit in sequence, a molten salt heat storage unit, a double-branch heat release unit, and a by-product back-burning unit connected with the double-branch heat release unit and the waste incinerator respectively; the double-branch heat release unit comprises a power generation branch and a dry distillation carbon production branch connected in parallel, the high-temperature corrosion-resistant heat exchange unit is provided with a flue gas-molten salt efficient corrosion-resistant heat exchange structure, the molten salt heat storage unit is matched with a heat cascade distribution control system for heat storage-power generation-dry distillation; the dry distillation carbon production branch is provided with a constant-temperature heat release structure of a molten salt dry distillation furnace; the molten salt heat storage unit realizes peak-valley adjustment; and the present application solves the problems of obvious short boards in the prior art in terms of waste heat utilization efficiency, system operation stability, heat exchange equipment durability and solid waste collaborative disposal.

The utility model discloses a gas retort mixed gas treatment system, and relates to the technical field of waste gas recycling. The device comprises a venturi tower, the top of the venturi tower is provided with a plurality of hot ring water nozzles, the inlet end of the venturi tower is connected with a mixed gas outlet of the dry distillation furnace, the outlet end of the venturi tower is connected with a rotational flow plate tower, the outlet end of the rotational flow plate tower is connected with a cyclone oil trap, the cyclone oil trap is connected with an electrostatic oil trap, and the electrostatic oil trap is connected with an electrostatic dust collector. An outlet of the electrostatic oil trap is provided with three branches, the first branch is connected with a heat source inlet of the dry distillation furnace, the second branch is connected with a gas generator set, the third branch is connected with a diffusion torch, and mixed gas generated through treatment of the dry distillation furnace enters the venturi tower to be cooled. And the cooled mixed gas sequentially enters a rotational flow plate tower, a cyclone oil trap and an electrostatic oil trap to perform multi-stage cooling purification on the mixed gas, so that oil and water in the mixed gas can be effectively separated, and finally, relatively pure coal gas with a high calorific value can be obtained.

The application provides a kind of semi-coke and its preparation method, belongs to semi-coke production technical field, the preparation method includes: selecting coal washing with first set parameter, the first parameter includes: ash component characteristic value R, Hardgrove grindability index and specific surface area;The coal washing is broken according to the set particle size and is handled;After breaking treatment, pyrolysis treatment is carried out under the second set parameter, and semi-coke particles are obtained, the second set parameter includes: back to the stove gas / air flow ratio, coke pushing speed and dry distillation temperature.The method starts from the raw material and process used in semi-coke production, can effectively improve the porosity of semi-coke, increase the specific surface area of semi-coke, and then improve the grindability index of semi-coke.

The invention belongs to the technical field of low-rank coal dry distillation furnaces, and particularly relates to a modular coke pushing device and a large-volume dry distillation vertical retort, the modular coke pushing device comprises a coke quenching tank, a main frame, a coke supporting plate, a coke pushing rod, rollers and a reciprocating driving mechanism, the coke pushing rod is connected to the main frame, and the coke supporting plate is arranged below the coke pushing rod. The reciprocating driving mechanism comprises two hydraulic cylinders which are synchronously controlled, the two hydraulic cylinders are symmetrically arranged on the two sides of the width direction of the coke quenching tank, the piston ends of the hydraulic cylinders are connected with the connecting frame on the outer side of the main frame, and the hydraulic cylinders push the main frame to reciprocate in the length direction of the coke quenching tank. The modular coke pushing device has the beneficial effects that the driving mechanisms of the modular coke pushing device are arranged on the two sides of the carbonization chamber in the width direction, the space in the length direction of the dry distillation furnace body is not occupied, the volume expansion of the dry distillation furnace is not limited by the coke pushing structure and power any more, and the modular coke pushing device does not affect multi-stage series connection of the internal heating type vertical furnace in the length direction; and large-scale upgrading and reconstruction of the furnace body can be conveniently realized.

The invention provides a spontaneous heating composite synergist as well as a preparation method and application thereof. The spontaneous heating composite synergist is prepared from the following components in parts by weight: 20 to 40 parts of a component A, 20 to 40 parts of a component B and 30 to 40 parts of a component C, wherein the component A comprises an alkali metal salt inner core and a first silane coupling agent and aluminate coupling agent composite shell layer which coats the outer surface of the alkali metal salt inner core through chemical bonds; the component B comprises an alkaline earth metal oxide core and a second silane coupling agent shell layer which coats the outer surface of the alkaline earth metal oxide core through a chemical bond; and the component C comprises an active metal core and a third silane coupling agent shell layer coated on the outer surface of the active metal core through a chemical bond. The self-heating composite synergist is subsequently applied to in-situ gasification, in-situ dry distillation, superheated steam gasification and supercritical water gasification of deep coal and has a relatively good heat-increasing synergistic effect.

The utility model relates to the technical field of fresh bamboo juice production, and discloses a dry distillation, condensation and collection device which comprises a device body, a controller and a box door are installed on the front side face of the device body, a heating bin, a cooling barrel and a collection tank are installed in the device body, and a heating rod and a bearing plate are installed in the heating bin. A dry distillation pipe is installed on the top face of the bearing plate, and a sealing plug is installed at the right end of the dry distillation pipe. According to the utility model, the two heating rods are started after the dry distillation pipe is placed on the plurality of bearing plates, and the heating rods can provide stable and uniform heat for the dry distillation process, so that the materials can be ensured to be continuously in a proper temperature condition in the dry distillation process, and the smooth dry distillation reaction is ensured; and the temperature sensor can accurately measure the temperature change in the dry distillation process in real time and feed back a temperature signal to the controller, so that an operator can know the temperature condition in the heating bin in time to carry out corresponding operation and adjustment.

The invention discloses a method and a system for controlling the pressure of a gas collecting pipe of a coke oven by a fan in a frequency conversion manner, and relates to the technical field of coking processes, and the method comprises the following steps: high-temperature dry distillation and primary treatment of raw gas: performing high-temperature dry distillation on coal in a coke oven carbonization chamber I and a coke oven carbonization chamber II, controlling the temperature at 900-1100 DEG C, feeding the generated high-temperature raw gas into a bridge pipe through an ascending pipe, spraying ammonia water for cooling and then flowing into a gas collecting pipe; gas-liquid separation and gas cooling: mixed gas in a gas collecting pipe enters a gas-liquid separator to be separated and then enters a gas primary cooler to be cooled; gas conveying and pressure control: cooled gas enters a gas purification system through a pipeline, a fan is arranged on the pipeline between a gas primary cooler and the purification system, a control butterfly valve is arranged at the air inlet end of the fan, the opening degree of the butterfly valve is adjusted, the fan is controlled to operate in a variable frequency manner, the pressure of a gas collecting pipe is controlled to be 125-145 Pa, the stable pressure is ensured, smoke is reduced, and the capacity of adapting to production fluctuation is high; and the energy-saving effect is obvious.

The utility model belongs to the technical field of coal chemical industry, and particularly relates to a powdered coal dry distillation device. A powdery coal dry distillation device comprises a sealed dry distillation chamber, the head portion of the sealed dry distillation chamber is connected with a feeding mechanism, the tail portion of the sealed dry distillation chamber is connected with a discharging mechanism, a plurality of volatile matter eduction pipes are evenly distributed on the upper portion of the sealed dry distillation chamber, and the tail ends of the volatile matter eduction pipes are connected with a gas-liquid separator. A dry distillation furnace foundation is arranged at the lower part of the sealed dry distillation chamber, a plurality of hearths are arranged in the sealed dry distillation chamber, the hearths are provided with burners which are communicated with the outside, a plurality of dry distillation furnace flame paths which are distributed in parallel are arranged among the hearths, a flame path cover plate is arranged above the dry distillation furnace flame paths, and a closed-loop scraper conveyor is arranged above the flame path cover plate. According to the utility model, the powdery coal is subjected to dry distillation treatment, so that the problems of discharging and recycling of a large amount of powdery coal are solved, meanwhile, the coal gas quality is improved, hydrogen is conveniently separated from the coal gas, the economic benefit is improved, and further pollution to the environment is reduced.

The invention relates to the technical field of charcoal preparation, in particular to charcoal dry distillation equipment, which comprises a dry distillation cellar body, a main flue, a gas-liquid separator, a combustible gas check valve, a combustible gas recovery pipe and a wood vinegar recovery pipe, a plurality of dry distillation tank bodies are arranged in the dry distillation cellar body, a cover body is arranged at the top of each dry distillation tank body, and a gas outlet is formed in the top of each dry distillation tank body. A water sealing groove is formed in the joint of the dry distillation tank body and the cover body, one end of the main flue is communicated with a gas inlet of the gas-liquid separator, the other end of the main flue penetrates through the cover body and is communicated with the interior of the dry distillation tank body, a gas outlet of the gas-liquid separator is communicated with a gas inlet of the combustible gas check valve through a first auxiliary flue, and a gas outlet of the combustible gas check valve is communicated with a gas outlet of the gas-liquid separator through a second auxiliary flue. A gas outlet of the combustible gas check valve is communicated with the combustible gas recovery pipe through a second auxiliary flue, the bottom of the gas-liquid separator and the bottom of the combustible gas check valve are both communicated with the wood vinegar recovery pipe through collecting pipes, and cooling devices are arranged outside the main flue, the gas-liquid separator and the combustible gas check valve.

The application provides a method and device for hydrogen production by electromagnetic induction high-temperature carbonization, and belongs to the technical field of hydrogen production by carbonization. The method comprises the following steps: S1, drying and preheating solid carbon-containing raw materials, and isolating air throughout the process; S2, starting a ceramic screw propeller in the carbonization furnace to continuously push the raw materials and sequentially pass through a preheating section, a medium-temperature dry distillation section and a high-temperature carbonization section for pyrolysis carbonization reaction, and simultaneously generate solid carbonized substances and hydrogen-containing mixed gas; S3, the solid carbonized substances are discharged after being transported to a cooling section for cooling; the hydrogen-containing mixed gas is discharged from a gas outlet and subjected to dust removal and purification treatment; and S4, the purified hydrogen-containing mixed gas is purified to obtain high-purity hydrogen. The hydrogen production process of the application does not use open flame heating, reduces dust and waste gas emission, is more environmentally friendly, can prepare high-purity hydrogen, and further improves the product value.

The utility model provides a lignite dry distillation upgrading system. The lignite dry distillation upgrading system comprises a first conveying line and a second conveying line, a first temperature control system is arranged in the first fluidized bed furnace and used for setting the working temperature of the first fluidized bed furnace, providing a high-temperature heat source and removing water outside lignite; the second conveying line is used for conveying the lignite from which the external water is removed; the dry distillation furnace is used for pyrolyzing the lignite without the external water and removing the water in the lignite; a temperature control system II is arranged in the second fluidized bed furnace and is used for setting the working temperature of the dry distillation furnace; the interior of the dry distillation furnace is in a vacuum state; according to the utility model, water outside the lignite is removed by using the first fluidized bed furnace, water inside the lignite is removed by using the dry distillation furnace with the vacuum inside, and the quality of the lignite is obviously improved and the energy consumption is reduced by accurately controlling the removal temperature and the treatment environment of the outer water and the inner water.

The application provides a device for treating oil-containing solid waste and a working method thereof, and belongs to the technical field of solid waste treatment. In order to solve the problem of high energy consumption in treating oil-containing solid waste in the prior art, the device for treating oil-containing solid waste comprises a dry-wet separation device (2), a dry distillation reactor (8) and a riser burner (16), the dry distillation reactor (8) contains a ceramic membrane filter (9) and a horizontal cyclone separator (36), the heat carrier particles can heat the solid waste dry material and make the solid waste dry material have a dry distillation reaction in the dry distillation reactor (8), and the waste semi-coke material can enter the riser burner (16) to burn to form heat carrier particles. The device for treating oil-containing solid waste utilizes the ash after the pyrolysis product is burned as a heat carrier, does not refer to other heat carriers and heat sources, can reduce energy consumption, and reduces the overall heat load of the system.

This invention discloses a micro-oxygen combustion pyrolysis apparatus and method utilizing a fluidized bed. The apparatus includes a fluidized bed, which is divided into a pyrolysis chamber and a gas supply chamber by an airflow distribution plate. The pyrolysis chamber is connected to a steam combustion mechanism. The apparatus also includes a supply mechanism, which comprises a thermal expansion and contraction column disposed within the pyrolysis chamber, a movable column that penetrates the airflow distribution plate, and an exhaust stack disposed within the gas supply chamber. The bottom of the exhaust stack is connected to a gas source via a pipe. Several air holes are formed on the side wall of the exhaust stack. A piston disc is movably disposed within the exhaust stack. One end of the thermal expansion and contraction column is fixed to the top wall of the pyrolysis chamber, and the other end is connected to the piston disc via the movable column. This micro-oxygen combustion pyrolysis apparatus and method can automatically control the supply of oxygen or air based on the real-time temperature during the pyrolysis process, maintaining the incomplete combustion process of the material to supplement the heat required for material decomposition.

An optimization method for a directional preparation technique and efficient use of semi-coke for blast furnace injection. Firstly, the volatile and the ash content of target semi-coke are preset, and then the volatile and the ash removal percentages of a raw coal are calculated; after ash removal, several sets of dry distillation carbonization temperatures and carbonization times are obtained according to the volatile removal percentage, and the relationships between a combustion rate, abrasiveness, explosiveness and jet flow property and the carbonization temperature are respectively established to obtain the optimal actual carbonization temperature; and semi-coke for blast furnace injection is obtained at an actual carbonization temperature. The directional preparation is suitable for the semi-coke for blast furnace injection, and an optimal coal-compounding scheme is obtained, thus achieving the efficient and safe injection of blast furnace iron-making fuels, and energy conservation and emission reduction.

The invention provides a tobacco flavor, a preparation method thereof and a cigarette product. The preparation method of the tobacco flavor comprises the following steps: providing preparation raw materials, wherein the preparation raw materials comprise a tobacco material and a flavor plant; grinding the preparation raw materials to prepare raw material powder; carrying out mixed dry distillation treatment on the raw material powder to prepare a dry distillation mixture; sequentially carrying out dilution treatment and molecular distillation treatment on the dry distillation mixture to obtain a heavy component and a light component; and mixing the heavy component and the light component to prepare the tobacco flavor. According to the preparation method of the tobacco flavor, the aroma richness of the tobacco flavor can be improved; the light components and the heavy components can be reasonably matched according to the requirements of consumers, so that precise flavor blending is realized, and the whole fragrance is more coordinated.

The application discloses a super-large triad central tube type rotating bed gasification furnace, which comprises a hearth with a gasification section and a dry distillation section, and the wall part of the hearth is provided with an annular channel extending in the circumferential direction; a triad central tube assembly is arranged at a relatively upper position in the dry distillation section and comprises three array tubes arranged in a circumferential array with the hearth central axis as a reference and a flow collecting mechanism connected to the top of the three array tubes. The triad central tube realizes multi-point uniform gas collection and primary separation, the triad structure guarantees uniform radial heating of the dry distillation section, reduces tar generation from the source, and then the gap and the annular channel are used to realize forced backflow of heavy tar, uncompletely combusted fine carbon particles and fly ash to the gasification section combustion chamber for secondary cracking, thereby reducing the tar content of the outlet coal gas, the array tube dispersion reduces the inlet flow rate, effectively reduces the fly ash entrainment in the coal gas, the uniform gas extraction point optimizes the bed layer gasification agent distribution, and the carbon conversion rate is effectively improved.

The invention relates to a gasification device and a biomass conversion system and method, and is applied to the field of biomass gasification. The dry distillation device comprises at least two dry distillation pipes which are arranged in parallel, a fuel gas channel and a flue gas channel, and the dry distillation pipes are used for filling biomass raw materials for gasification operation; the fuel gas channels are connected between the adjacent dry distillation pipes in an abutting mode, the output ends of the dry distillation pipes are communicated with the combustion device and / or the collecting device through the fuel gas channels, and the fuel gas channels are used for allowing gas to flow through so as to heat the dry distillation pipes; the flue gas channel covers the peripheries of the dry distillation pipe and the fuel gas channel, and flue gas flows through the flue gas channel so as to heat the dry distillation pipe and the gasified gas. The biomass conversion system integrates the functions of drying, pyrolysis and gasification, and is high in heat efficiency and compact in structure. Moreover, the system also adopts a composite heat supply mode that external high-temperature flue gas heating and internal high-temperature gasified gas waste heat heating are simultaneously carried out to jointly provide heat required by gasification, so that the gasified gas waste heat is fully utilized, the heat loss is reduced, and the energy utilization efficiency is improved.

To produce sintered ore having higher quality by using a mixed dry distilled material obtained by mixing iron ore with biomass and dry distilling the mixture.SOLUTION: A particle size adjustment step of adjusting the particle size of the biomass and the iron ore to a predetermined particle size, a carbonization step of carbonizing a mixture of the biomass and the iron ore having the adjusted particle size to produce a mixed carbonized product which is a mixture of a biomass carbide and a reduced ore, and a sintering step of producing sintered ore using the mixed carbonized product, wherein the predetermined particle size of the biomass is a top size of 3 mm or more and 7 mm or less, and the predetermined particle size of the iron ore is a top size of 7 mm or more and 10 mm or less, wherein a particle diameter ratio of a top size is 0.3 or more, a mass ratio of the biomass and the iron ore in the mixture is 0.2 or more, a dry distillation temperature in the dry distillation step is 700 °C or more and 900 °C or less, and a reduction rate of the reduced ore produced in the dry distillation step based on hematite is 70% or less.SELECTED DRAWING: Figure 1

The utility model discloses a circulating gas mixing device, which belongs to the technical field of oil shale grading dry distillation, and comprises a dry distillation furnace body, a heating furnace, a gas saturation tower and a gas discharging machine, a gas inlet of the dry distillation furnace body is fixedly connected with a sixth pipeline, the end part of the sixth pipeline is fixedly connected with a gas mixing tank, and the gas mixing tank is fixedly connected with a gas outlet of the heating furnace. The top of the gas mixing tank is fixedly connected with a third pipeline, and the end part of the third pipeline is connected with the gas saturation tower. According to the utility model, one part of saturated gas in the gas saturation tower is conveyed into the gas mixing tank through the third pipeline, the other part of the gas is guided into the heating furnace through the fourth pipeline to be heated, and the heated gas enters the gas mixing tank through the fifth pipeline to be mixed; and the mixed gas is guided into the dry distillation furnace body from a sixth pipeline to provide a heat source for shale dry distillation in the dry distillation furnace body, so that the shale oil yield is stable.