78 results about "Steam explosion" patented technology

Material cage type steam explosion equipment relates to the technical field of steam explosion and comprises an explosion kettle body, a material cage is detachably installed in the explosion kettle body, and the material cage is installed in the explosion kettle body in a rotating mode through a material cage rotating structure with the axis of the material cage as the rotating center. The steam explosion kettle solves the problems that in the prior art, when a steam explosion kettle body is large, materials are prone to being stacked when the steam explosion kettle body is filled with the materials, the material explosion effect is poor, charging and discharging are troublesome, and the material explosion efficiency is affected.

The utility model discloses a waste heat recovery device of a straw steam explosion wall, and relates to the technical field of waste heat recovery of the steam explosion wall, the waste heat recovery device of the straw steam explosion wall comprises a steam explosion tank and a material receiving device, the discharge port of the steam explosion tank is communicated with the feed port of the material receiving device, and the discharge port of the steam explosion tank is communicated with the feed port of the material receiving device. A steam outlet of the material receiving device is communicated with the settling chamber through a first pipeline, and a steam outlet of the settling chamber is communicated with the heat exchanger through a second pipeline. Straw in steam can be removed through the settling chamber, then the steam is cooled through the heat exchanger, cooled gas is discharged into the air, heat, lost in the heat exchanger, of the steam can be absorbed and applied by another heat exchange medium in the heat exchanger, and therefore waste heat recovery of the steam explosion wall of the straw is achieved.

The invention discloses an endogenous steam in-situ braking expansion device and a hard carbon material preparation method, and belongs to the technical field of biomass pretreatment, and the endogenous steam in-situ braking expansion device comprises a steam explosion reaction cabin and a water storage cabin which are communicated. An electric heating device is arranged outside the steam explosion reaction cabin, the steam explosion reaction cabin is communicated with the water storage cabin, and an inductance heating device is arranged outside the water storage cabin. The brake expansion device adopts a mode of combining electric heating and inductive heating, water vapor is generated in situ, and energy loss caused by vapor condensation is effectively reduced. Compared with a traditional steam explosion machine, the steam explosion machine has the advantages that energy consumption is effectively reduced, materials can be conveniently fed and discharged, and meanwhile the problem that steam is generated, enters the steam explosion reaction cabin, is condensed and drips on the materials, and consequently treatment is not uniform is solved.

The present application provides a kind of bamboo piece steam explosion equipment and method, including equipment body and pressure maintaining mechanism, the pressure maintaining mechanism includes the steam pipeline being arranged in equipment body and the valve group being fixed on steam pipeline;It also includes the positioning mechanism being movably arranged in equipment body for carrying the positioning mechanism of bamboo piece;And the transmission part being movably arranged in equipment body is connected with positioning mechanism;Bamboo piece is placed to positioning mechanism fixed, steam is supplemented to equipment body by steam pipeline and pressure is maintained, then control valve group makes equipment body steam explosion, while in the process of pressure maintaining and steam explosion, transmission part pulls positioning mechanism to move in equipment body;The present application makes bamboo piece in the steam explosion process of equipment body in the function of active state, to improve the utilization rate of steam explosion bamboo piece and steam explosion efficiency, and solve the problem of destroying bamboo piece shape in the process of steam explosion.

The present invention relates to a nuclear power plant with improved steam explosion mitigation performance, the nuclear power plant comprising: an integrated reactor including a hemispherical first portion inside which a core and a steam generator are positioned and a cylindrical second portion positioned above the first portion; a containment vessel for accommodating the integrated reactor, having a cooling space surrounding the integrated reactor, and including a first containment portion facing the first portion and a second containment portion facing the second portion; and a lower structure which is located in the cooling space and is located under the integrated reactor, wherein the lower structure comprises a first plate and a second plate disposed below the first plate, and the first plate and the second plate are arranged in a horizontal direction and face each other.

The invention relates to the technical field of computer aided design, discloses a three-phase analogue simulation method and system for a steam explosion phenomenon, and is used for solving the technical problem that the efficiency and the precision of simulation of the steam explosion phenomenon are insufficient in the prior art. The method comprises the steps that modeling is conducted on a steam explosion scene based on physical scene parameters, a control equation set based on three-phase immiscible flow is obtained, and three phases comprise a relative high-temperature liquid phase, a relative low-temperature liquid phase and a gas phase; establishing a closed relation model for describing interphase pressure relaxation, mass transfer, heat transfer and momentum exchange; and calling a step-by-step solving strategy, and sequentially solving a convection step and a relaxation step of the control equation set based on the control equation set and the closed relation model to realize simulation of the steam explosion phenomenon. The method is used for improving the simulation precision and simulation efficiency of the steam explosion phenomenon.

The invention relates to the technical field of steam explosion, and particularly discloses a straw continuous steam explosion device which comprises an explosion tank, a steam supply unit, a material uniformizing unit and a material turning unit. The hollow rotating shaft rotates to drive the steam exhaust supporting rod to rotate in the circumferential direction, high-temperature steam dynamically covers the bottom space of the explosion tank from the steam opening, and three-dimensional contact between the steam and straw is achieved. The deflection disc obliquely deflects relative to the spherical sleeve, so that the straws are uniformly dispersed to the material uniformizing opening; deflection synchronously drives the material screening bag to shake, vibration screening is achieved, and blocking due to caking is avoided. When the fan-shaped turning plate periodically turns downwards, the fan-shaped sealing plate is unfolded, so that the straws flow into the upper layer of the turning plate through the stepped groove; during upturning, the fan-shaped sealing plates close the stepped grooves, outer-layer straw is thrown to the center area of the annular support, axial and radial double turning from bottom to top and from outside to inside is formed, steam dead corners are thoroughly broken, full-dimension uniform steam receiving of the straw is achieved, and the blasting effect and treatment continuity are greatly improved.

A method for refining molten iron is provided that can be carried out safely and stably without steam explosions or machine losses when using the heat of high-temperature slag remaining in a reaction vessel to preheat a cold iron source. The method uses the heat of slag generated after the completion of refining a previous charge of molten iron to preheat the cold iron source. The method includes a first step of discharging the molten iron refined while it remains in the reaction vessel as residual slag from the reaction vessel, a second step of charging the cold iron source through a scrap chute as a coolant for cooling the residual slag to solidify it, and a third step of charging the next charge of molten iron into the reaction vessel and refining it. In the second step, the K value calculated using a predetermined relational expression using the mass Wsl of the residual slag, the mass Wsc of the cold iron source charged through the scrap chute, and the temperature Tf of the hot material remaining in the furnace in the first step is less than 0, and no waiting time T is required after charging the cold iron source.

The application provides a split type steam explosion equipment, and relates to the technical field of steam explosion equipment. The steam explosion equipment comprises a rack, a steam explosion tank is fixedly connected inside the rack, a lower piston sealing plate and an upper piston sealing plate are slidably connected inside the steam explosion tank, a lifting push rod is fixedly connected to the top surface of the upper piston sealing plate, a buffer mechanism is arranged inside the rack, a feeding mechanism is arranged outside the steam explosion tank, and a silencing mechanism is arranged outside the rack. The steam explosion tank, the buffer mechanism, the feeding mechanism and the silencing mechanism are arranged, the whole steam explosion machine is split into multiple independent components, the processing difficulty is greatly reduced, transportation and on-site installation are facilitated, and the maintenance cost is reduced. The buffer mechanism, the feeding mechanism and the silencing mechanism can significantly improve the operation stability and operation convenience of the equipment, effectively guarantee the sealing performance of the device, reduce the noise generated during equipment operation, and improve the use comfort and environmental protection of the equipment.

A sampling-based steam explosion consequence analysis method includes the following steps: providing key influencing factors of steam explosion and their corresponding input probability distributions, and providing a steam explosion analysis program; automatically sampling the key influencing factors and generating input cards; inputting the input cards into the steam explosion analysis program to obtain a probability distribution of steam explosion consequences. This method can cover the range of variation of key factors through large-scale sampling and accurately simulate steam explosion consequences using probabilistic methods, thereby providing data support for nuclear power plant safety design and accident consequence assessment. The present invention also provides a computing device.

The present application relates to the technical field of home appliance accessories, and discloses a heating device with explosion anti-dripping, which comprises a heating device body (100) and a valve body assembly (200), wherein the valve body assembly (200) is provided with an explosion channel (211); the heating device body (100) is provided with a deformation piece (110), the deformation piece (110) is used for sensing the heating temperature of the heating device body (100), and when the temperature of the deformation piece (110) reaches a deformation temperature, the deformation piece (110) triggers the explosion channel (211) in the valve body assembly (200) to open. The present application has the advantages of being capable of avoiding the dripping phenomenon and having a good steam explosion effect.

The invention relates to the technical field of aluminum alloy waste machining equipment, in particular to a purifying and smelting device for recycling aluminum alloy waste. Comprising a bottom plate and a smelting furnace, the smelting furnace is arranged on the bottom plate and used for smelting aluminum alloy waste, a supporting frame is arranged on the bottom plate, and a hollow frame is installed on the supporting frame. By arranging the automatic feeding mechanism and the inclined rotary drum structure, automatic operation of the whole process from conveying, pretreatment to furnace entering of aluminum alloy waste is achieved, operators are prevented from making close contact with a high-temperature smelting furnace, harm to workers caused by heat radiation, metal splashing and sudden accidents is effectively reduced, and the production efficiency is improved. The heater and the discharging mechanism are arranged in the device, before the aluminum alloy waste enters the smelting furnace, residual water on the surface of the aluminum alloy waste can be fully evaporated to dryness, steam is discharged in time through a negative pressure system formed through suction of the air pump, the possibility of steam explosion caused by damp waste is fundamentally reduced, and stable equipment operation and personnel safety are guaranteed.

The invention discloses a method for repairing the surface of a failed precious metal titanium anode, and relates to the technical field of electro-catalytic anodes, the method comprises the following steps: S100, soda boiling: soaking a failed anode plate into a fused alkali solution at 360-560 DEG C for 10-40 minutes, the alkali solution comprises main salt: KOH and / or NaOH; the auxiliary component is NaNO3 and / or KNO3; an additive; the anode subjected to soda boiling is quenched and immersed in cold water for 2-15 min, and a residual coating on the surface of the titanium anode is stripped through steam explosion; the titanium anode obtained after alkali explosion is soaked in acid liquor, residual dirt on the surface of the titanium anode and hanging alkali are subjected to an acid-base neutralization reaction, and the cleanliness of the surface of the titanium anode is further improved; and S400, washing with water and drying. According to the method, the steps of high-temperature soda boiling and shock cooling alkali explosion are creatively combined, the internal structure of the failed coating is fully loosened through soda boiling, the binding force between the internal structure of the failed coating and a titanium substrate is remarkably weakened, and the loosened coating is subjected to efficient and thorough physical stripping through generated high-pressure steam explosion and huge thermal stress during alkali explosion.

The utility model relates to the field of forage grass processing, and discloses a steam explosion device for processing rice straws to produce roughage, which comprises a vertically arranged explosion tank, a feed port arranged above the explosion tank, a feed valve arranged on the feed port, a discharge port arranged below the explosion tank, and a discharge valve arranged on the discharge port. A plurality of air inlets are formed in the bottom of the blasting tank; a plurality of spiral material guide plates which are uniformly distributed on the circumference are fixed on the inner wall of the blasting tank; the spiral material guide plates extend to the lower part of the blasting tank from the upper part of the blasting tank; and each air inlet is positioned between two corresponding adjacent spiral material guide plates. The problems that in a traditional device, materials are heated unevenly, and the fiber degradation effect is poor are effectively solved, full contact of steam and straw is achieved, the straw is heated evenly, and the straw treatment efficiency and the coarse fodder quality are improved.

The invention belongs to the technical field of pulping, and particularly relates to a method for preparing dissolving pulp by using herb gold violet as a raw material. The preparation method comprises the following steps: crushing, screening, washing and filtering grass gold violet serving as a biomass raw material, entering a transfer bin, putting the grass gold violet into a reaction kettle, carrying out steam explosion twice and alkali liquor reaction, and after the reaction is finished, squeezing, pulping, bleaching, secondary squeezing, forming and drying to obtain the finished product dissolving pulp. The preparation method disclosed by the invention is high in environmental protection property, high in pulping yield and excellent in pulp quality, and provides a new direction for industrial pulping.

The utility model relates to the technical field of steam explosion, and discloses a steam explosion blow-off assembly and steam explosion equipment, the steam explosion blow-off assembly comprises a nozzle communicated with a cooking container, the nozzle is provided with an inner diameter gradually-shrinking section and an inner diameter gradually-expanding section which are sequentially arranged in the direction away from the cooking container, a throat part is formed at the joint of the inner diameter gradually-shrinking section and the inner diameter gradually-expanding section, so that materials in the cooking container can pass through the throat part; according to the utility model, the inner diameter reducing section of the nozzle can narrow the blowing channel of the material to be subjected to steam explosion in the cooking container, so that the material to be subjected to steam explosion in the cooking container can be continuously blown at a smaller blowing flow, and an action element does not need to be arranged on the blowing pipeline of the cooking container for intermittent blowing; furthermore, a plurality of defects existing in the existing intermittent spraying discharging can be overcome; the inner diameter gradually-shrinking section can effectively increase the flow speed of the steam explosion material to be sprayed, and then through quick release of the inner diameter gradually-expanding section, the steam explosion effect of the material to be subjected to steam explosion is remarkably improved.

The invention discloses a lignocellulose continuous multi-stage steam explosion pretreatment process and device, and relates to the technical field of lignocellulose raw material pretreatment. Comprising the following steps: continuously conveying lignocellulose loaded with a chemical additive into a steam explosion pretreatment reaction tube, carrying out continuous three-stage low-temperature reaction coupling high-pressure explosion treatment, and spraying to obtain a pretreated lignocellulose material; wherein the specific parameters of the continuous three-stage low-temperature reaction coupling high-pressure blasting treatment are as follows: the treatment is performed for 5-9 minutes at the temperature of 80-120 DEG C in the first-stage treatment, the treatment is performed for 2-6 minutes at the temperature of 140-160 DEG C in the second-stage treatment, and the treatment is performed for 1-3 minutes at the temperature of 180-220 DEG C in the third-stage treatment; the pressure is 0.5 to 2.0 MPa. According to the continuous steam explosion lignocellulose complete equipment and the pretreatment method, effective continuous production of biomass raw materials can be achieved, low-inhibitor lignocellulose hydrolysis sugar liquid is obtained, fermentation conversion of downstream microorganisms is facilitated, wastewater discharge and use of chemical auxiliaries are reduced, and commercialized large-scale production is expected to be further achieved.

This invention provides a silicon-carbon composite material based on steam explosion, its preparation method, and its application, belonging to the field of silicon-carbon composite material technology. The preparation method includes the steps of preparing a precursor composite slurry, steam explosion, and simultaneous carbonization and activation. The steam explosion treatment step involves pumping the precursor composite slurry into a steam explosion reactor, introducing saturated steam, and maintaining pressure at 200-280℃ and 2.0-4.5MPa for 30-40 minutes. During the pressure maintenance, ultrasonic assistance is activated. After the pressure maintenance, a step-by-step depressurization is performed, i.e., 3-8 depressurizations are completed within 6-10 seconds, with each depressurization pressure being 10-30% of the previous one. After each depressurization, the pressure is held momentarily for 0.1-0.2 seconds, and finally completely depressurized to atmospheric pressure. After drying, the exploded product is obtained. The silicon-carbon composite material obtained by the method of this invention exhibits excellent cycle performance and rate performance when applied to batteries.

A method for processing a lignocellulose biomass material with a moisture content below 10 weight-% and an ash content below 1.0 weight-% includes: adding an acid catalyst to the lignocellulose biomass material; after adding the acid catalyst, thermally treating the lignocellulose biomass material with steam at an elevated pressure and an elevated temperature in at least one reactor; discharging the lignocellulose biomass material and blow steam from the at least one reactor using a steam explosion discharge device; and forming pellets and / or briquettes from at least part of the discharged thermally treated lignocellulose biomass material.

The utility model relates to the field of paper pulp processing, and discloses a steam explosion device for processing rice straw pulping, which comprises a tank body and a tank cover hermetically fixed at the upper part of the tank body, the tank cover is connected with a feed pipe, a feed valve is arranged on the feed pipe, the bottom of the tank body is connected with a discharge pipe, and a discharge valve is arranged on the discharge pipe; a double-layer pipe is fixed in the middle of the tank cover, and a plurality of air outlets are formed in the bottom of the double-layer pipe; a rotating shaft is sleeved with the double-layer pipe, the upper end of the rotating shaft is connected with a motor driving the rotating shaft to rotate, the motor is fixed to the tank cover, a stirring part is fixed to the lower extending end, penetrating through the double-layer pipe, of the rotating shaft, and the air outlet hole faces the stirring part. Uniform contact between steam and rice straw is achieved, it is guaranteed that materials are heated evenly, the fiber separation effect is improved, and the quality and efficiency of rice straw pulping are improved.

The utility model discloses a furnace body heat abstractor and metallurgical furnace relates to metallurgical technical field, and the heat abstractor is connected to the furnace body, and the heat abstractor includes fan and base, and the fan includes casing and fan blade, and the casing is set up fan air inlet and fan air outlet, and the fan blade is installed at the fan air inlet and blows the direction to the fan air outlet, and the base includes insertion part and heat dissipation hole plate, and the shape of insertion part is matched with the shape of furnace body insertion position and exists the gap between insertion part outer wall and furnace body inner wall, and the insertion part is set up relatively and is set up insertion part air inlet and insertion part air outlet, and the heat dissipation hole plate is set up in the outside of insertion part air inlet, and the size of heat dissipation hole plate is greater than the size of gap, and the heat dissipation hole plate is set up heat dissipation hole, and the fan air outlet is connected insertion part air inlet. The utility model provides simple structure, and the maintenance repair difficulty is low to convenient dismounting, assembling. Use air as the heat abstractor medium, and the water is prevented from contacting with smelting liquid metal, and the steam explosion is eliminated. Cold and hot air flow channel is separated, and the cold and hot air current will not appear and butt.

This invention discloses an injection mold for TPU protective sleeves, belonging to the field of mold technology. It includes a fixed mold with a lower mold core embedded in its top, a temperature control cavity I at the bottom of the lower mold core, and an operating cavity inside the fixed mold; and a moving mold with an upper mold core embedded in its bottom, and a temperature control cavity II connected to the temperature control cavity I at its top. Compared to commonly available TPU protective sleeve injection molds, this product uses a combination of air cooling and water cooling. It cools the upper and lower mold cores with dehumidified, low-temperature air, avoiding the possibility of steam explosions. The insulation cavity houses and insulates the preheated heating plate. During cooling, only the lower and upper mold cores are cooled, without needing to cool the heating plate itself. This allows for rapid temperature increases in the heating plate upon reuse, quickly preheating the lower and upper mold cores, ensuring processing efficiency while saving heating energy, resulting in economic benefits and broad application prospects.

The application discloses an eggshell membrane steam explosion pretreatment device and method and the technical field of steam explosion, and comprises a steam explosion tank, a high-pressure steam supplier, a rapid pressure relief device, a mechanical crushing device, a pre-crushing module and a separation screening module. The application loosens the material in advance through the double-toothed roll crusher of the pre-crushing module, uses high-pressure steam explosion to combine the rapid pressure relief device with extremely fast response to generate a high-speed airflow to tear the eggshell membrane, and uses the pressure relief airflow to drive the built-in radial flow impeller to rotate at high speed, the transmission shaft drives the multi-layer staggered cutter head with a high-hardness cubic boron nitride coating, and cooperates with the fixed stepped tooth plate to realize efficient recycling of the pressure relief energy under the stability of the speed-regulating flywheel, significantly reduces external energy consumption, and integrates the pre-crushing, steam explosion, energy recovery crushing and subsequent separation screening modules into one, greatly improves the efficiency, automation degree and final product yield and quality of the eggshell membrane separation treatment.

According to the internal-pressure-driven instantaneous steam explosion method and system, a hydraulic jack in a tank is utilized, small pressure is applied firstly to enable an opening and closing mechanism to be in a pre-unlocking state, the pressure is released several seconds later, instantaneous unlocking of the opening and closing mechanism is achieved, and the internal and external high pressure difference of the tank body serves as driving force to generate bending moment to drive the opening and closing mechanism to eccentrically rotate and throw away instantaneously. Therefore, a plurality of air port parts which are uniformly distributed in the axial direction and the circumferential direction on the tank wall are instantly and synchronously opened, so that instant, synchronous and uniform steam explosion of the tank body in the axial direction and the circumferential direction is achieved, effective sealing of the tank ports and the air ports can be achieved through step-by-step pressure boosting in the tank, a higher pressure value in the tank can be reversely guaranteed, and the service life of the tank body is prolonged. And the flash explosion effect is better, complement each other, the design is ingenious, and the practicability is high.

The disclosure relates to a process for steam treatment of non-wood plant material comprising subjecting the plant material to steam treatment and steam explosion in a steam treatment unit (10) comprising a steam treatment section (11) and a pressure relief section (12); characterized in that the process is a dual mode process, in which the steam treatment unit (10)5 is run in two alternating process modes (100a,100b), said process comprising supplying (101) plant material of a first or a second size fraction to a steam treatment unit (10) determining (102) plant material size fraction and selecting (103) a first (100a) or a second (100b) process mode, based on the determined plant material size fraction, subjecting the plant material to steam treatment (104a,104b) at a steam treatment pressure (PST1, PST2) in the steam treatment0 section (11), wherein, during the first process mode (100a), the steam treatment section (11) is operated at a first steam treatment pressure (PST1) and, during the second process mode (100b), the steam treatment section (11) is operated at a second steam treatment pressure (PST2), wherein said second steam treatment pressure (PST2) is higher than said first steam treatment pressure (PST1), followed by discharging (105a,105b) the plant material to a pressure relief5 section (12) operating at a relief pressure (PR) in which is lower than the steam treatment pressure (PST1, PST2), thereby causing steam explosion of the plant material, and forwarding (106a,106b) the treated plant material to storage or further processing. The disclosure pellets manufactured from the material obtained by the process, and use thereof.

A sliding cover type instantaneous opening valve for steam explosion equipment relates to the technical field of instantaneous opening valve structures and comprises a cylindrical valve body, a valve cover for opening and closing a release port of the valve body is arranged on the outer wall of the valve body in a sliding mode in the axial direction, a plurality of clamping jaws arranged in a swinging mode are arranged on the periphery of the outer wall of the valve body, and matched inclined planes are arranged between the contact surfaces of the clamping jaws and the valve cover. The problems that in the prior art, a pull explosion air cylinder is limited by the structure, and the sealing problem and the release time requirement are difficult to solve are solved; and in the actual application process, the ball valve is seriously abraded and is difficult to realize large scale, so that the ball valve cannot be applied to large-scale steam explosion equipment.

The invention relates to a method for separating and extracting cellulose, hemicellulose and lignin in bagasse, which comprises the following steps: step A, cleaning and crushing bagasse, and carrying out dewaxing treatment; step B, putting the bagasse powder treated in the step A into a steam explosion reactor for explosion, adding the obtained bagasse powder into a sodium hydroxide solution, carrying out solid-liquid separation after reaction to obtain a first solid and a hemicellulose extracting solution, and separating the hemicellulose extracting solution to obtain hemicellulose; step C, adding the first solid treated in the step B into a mixed solution of sodium chlorite and hexamethylenetetramine, carrying out solid-liquid separation after the reaction is ended to obtain a second solid and a lignin extracting solution, and drying the second solid to obtain bagasse cellulose; separating the lignin extracting solution to obtain lignin. The present application provides an economical, simple and effective method for fractionating their main polymeric components-hemicellulose, lignin and cellulose in high yield and high purity.

The invention relates to the technical field of steel plate sampling detection, and discloses a fixed-length cutting device for hot rolling production of a medium-thickness plate, which comprises a shell, the interior of the shell is hollow, a guide assembly, a positioning roller and a transmission roller are respectively arranged at the front part, the middle part and the rear part of the interior of the shell, and the guide assembly, the positioning roller and the transmission roller are all located at the center line of the interior of the shell; the number of the positioning rollers is two, the number of the transmission rollers is two, a dividing assembly is arranged between the positioning rollers and the transmission rollers, the dividing assembly comprises a truss, a plurality of water jet cutter heads are arranged on the truss, and the water jet cutter heads are used for conducting cutting and sample separation on a plate, utilizing cutting liquid of a water jet cutter and guiding the cutting liquid into rotating guide rollers. The guide roller is cooled, so that when the guide roller guides a high-temperature plate, the cooling effect on the high-temperature plate is achieved, and the situation that due to the fact that the temperature of the plate is too high, water jet liquid is gasified and even subjected to steam explosion when the water jet works is avoided.

To suppress the occurrence of phreatic explosions by avoiding contact between a core meltdown material and cooling water in a core meltdown material processing device and a nuclear facility.SOLUTION: A core meltdown material processing device in which a reactor is supported by a structure installed on a foundation part of a reactor containment vessel and which processes a core meltdown material falling from the lower part of a reactor vessel, includes: a cavity which is provided in the foundation part with a hollow shape; a transfer passage which has one end opened to the upper surface of the foundation part and the other end connected to the cavity; and a partition wall which has a cylindrical shape, has one end in the axial direction tightly connected to the lower part of the reactor vessel and the other end in the axial direction tightly connected to the foundation part so as to surround the other end of the transfer passage opened on the upper surface of the foundation part.SELECTED DRAWING: Figure 2