503 results about "Carbon deposit" patented technology

The invention discloses an automobile carbon deposition driving fault diagnosis method based on deep learning, and relates to the technical field of intelligent diagnosis. Deploying a multi-target dynamic reward function to synchronously calculate a power loss rate reward value, a carbon deposition coverage rate penalty value, a combustion efficiency gradient value and a carbon deposition growth rate gradient value, and outputting a power attenuation diagnosis state through a value iteration optimization strategy network; and receiving the power attenuation diagnosis state and the carbon deposition type classification code through the student model, loading the pre-trained teacher model, adding a confrontation discriminator in the distillation loss function, comparing the characteristic graph distribution difference of the teacher model and the student model, and outputting a grading treatment instruction matched with the vehicle state. According to the invention, by constructing the reinforcement learning agent and deploying the multi-target dynamic reward function, the comprehensive dynamic quantitative evaluation of the carbon deposition driving fault is realized.

The invention belongs to the technical field of industrial combustion safety control, and provides a double-channel industrial furnace gas combustion safety interlocking control system which comprises a gas / air flow ratio dynamic monitoring module, a flue CO concentration online detection module, a double-channel data conflict arbitration processor and a visual human-computer interface. Aiming at the prominent problems of incomplete combustion of coal gas, carbon deposition, detonation risk and the like which are easy to occur under the working condition of accelerated temperature rise, the system integrates visual double-insurance safety control of dynamic calculation of a flow ratio and real-time analysis of tail gas components, and all-directional safety protection in the combustion process is realized through a multi-parameter cooperative monitoring and intelligent interlocking mechanism; the detonation risk is obviously reduced; meanwhile, the air-fuel ratio fluctuation is accurately controlled within the range of + / -5%, and the carbon deposition phenomenon is effectively reduced; and remarkable economic benefits are created while reliable operation of equipment is guaranteed.

The present invention provides a hydrogenation catalyst, and a preparation method therefor and a use thereof. The catalyst of the present invention comprises an active component and a carrier, wherein the active component is composed of Ni, Mo, and P, and the carrier is a composite oxide comprising magnesium oxide, aluminum oxide, and silicon oxide; and on the basis of the weight of the catalyst, the mass ratio of Ni to Mo in the active component is 1.1-5, preferably 1.9-2.3, and Ni is calculated as NiO and Mo is calculated as MoO3. The active component of the catalyst of the present invention contains a high content of nickel. When used for the second-stage hydrogenation of cracked gasoline, the catalyst can be suitable for treating a raw material having a higher diene content, shows relatively strong monoolefin saturation performance and desulfurization and denitrification activity, can effectively inhibit carbon deposition, and has high stability. Therefore, the catalyst of the present invention is particularly suitable for use in industrial production of the second-stage hydrogenation of cracked gasoline or a fraction thereof.

The application discloses a cold plasma microbubble and biomass supercritical water gasification hydrogen production system and method, and belongs to the field of biomass hydrogen production. The system comprises a raw material processing unit, a cold plasma pre-activation unit, a high-pressure subcritical pretreatment unit, a supercritical gasification reaction unit, a gas-liquid separation unit, a hydrogen gas purification unit, a waste heat recovery unit and a circulating water treatment unit. After being pulped, the raw material is modified by the cold plasma pre-activation unit to improve the activity, and then enters the supercritical reactor with a built-in catalytic bed through the high-pressure subcritical pretreatment unit containing plasma microbubble generated active species to complete the gasification. After the product gas-liquid separation, the hydrogen-containing gas is purified to obtain high-purity hydrogen gas, the liquid phase water is purified and reused, the waste heat is recovered to supply system energy consumption, and the circulating water is treated to discharge crystalline salt to prevent salt analysis. The application realizes the deep cooperation of cold plasma and supercritical water gasification, improves the gasification efficiency and hydrogen production selectivity, reduces the energy consumption, tar and carbon deposition, guarantees the stable operation of the system, reduces the comprehensive cost, and is suitable for the industrialization of biomass hydrogen production.

The invention discloses a dispatching method and system based on a distributed diesel generator and a virtual power plant, and relates to the technical field of power systems and energy internet. Comprising the steps that a local control unit establishes an operation constraint model containing a nonlinear fuel efficiency and carbon deposition risk model, and generates a health recommendation domain; the cloud end generates a triple scheduling instruction packet containing reference power, offset bandwidth and weight vectors in combination with power grid constraints; identifying the impedance of a grid-connected point on line at the edge side, and carrying out asymmetric compression correction on the bandwidth based on the voltage sensitivity under a weak grid; and the local unit performs rolling optimization solution under the double constraints of the corrected instruction and the local model, and switches to the anti-carbon deposition autonomous mode containing dummy load input when the communication is interrupted and the carbon deposition risk is high. According to the invention, through cloud-side-end cooperation and hierarchical closed-loop correction, the conflict between the weak network voltage out-of-limit risk and the low-load carbon deposition of the unit is effectively solved, and the safety and the performability of scheduling are improved.

The invention discloses a composite catalyst for recovering monophenol from waste fan blades as well as a preparation method and application of the composite catalyst. The catalyst is prepared by taking a beta molecular sieve as a carrier and CeO2-Fe2O3 bimetallic oxide as an active component through a coprecipitation-calcination method. By changing the proportion of Ce < 2 + > / Fe < 3 + >, precise regulation and control of intermetallic interaction can be realized, and the content of active oxygen species and acid sites on the surface of the catalyst is remarkably increased. Meanwhile, due to the ordered macroporous structure of the beta molecular sieve, the shape selectivity of reactants is enhanced, the monophenol yield is remarkably increased, and the problem of carbon deposition in the catalysis process is effectively inhibited. The catalyst has high specific surface area, excellent catalytic activity and cycling stability, and can realize efficient catalytic conversion of waste fan blades within 450-650 DEG C. The process is simple and convenient to operate, low in energy consumption and high in monophenol yield, has both environmental and economic benefits, and provides a new strategy for resource utilization of fan blades.

The invention provides a composite catalyst for supercritical water gasification hydrogen production and a preparation method and application thereof, and relates to the technical field of organic solid waste recycling, the composite catalyst comprises a carrier, an active component and an auxiliary agent; the carrier is prepared from a ZrO2 mesoporous material co-doped with Ce and La; the active component comprises Ni-Co bimetallic nanoparticles, and the Ni-Co bimetallic nanoparticles are subjected to vulcanization treatment to form a core-shell structure in which Ni-Co metal is wrapped by sulfur; and the auxiliary agent comprises MoO3. According to the composite catalyst, a Ce-La-ZrO2 mesoporous material serves as a carrier, Ni-Co bimetallic nanoparticles serve as an active component, a core-shell structure (NiCo at S) is formed after vulcanization treatment, the surface of the core-shell structure is covered with a layer of sulfur atoms, carbon deposition can be effectively inhibited, the chlorine poisoning resistance of the catalyst is enhanced through the added MoO3 auxiliary, and the service life of the catalyst is prolonged.

The invention relates to the field of catalyst preparation and discloses a metal molecular sieve catalyst as well as a preparation method and application thereof. The catalyst contains a BCHA molecular sieve and Ni particles packaged in the BCHA molecular sieve, and the Ni particles with the size smaller than 6 nm account for 90%-100%; the BCHA molecular sieve is a boron-containing molecular sieve with a CHA structure, and the BCHA molecular sieve is formed by reaction of a silicon source, a boron source and a template agent. According to the metal molecular sieve catalyst, the BCHA molecular sieve is used as a carrier for loading Ni particles, and meanwhile, the size of the loaded Ni particles is ensured to be less than 6nm, so that the problems of metal sintering, rapid carbon deposition inactivation and the like caused by overlarge size of metal ions in the catalyst in the prior art are solved.

The invention relates to the technical field of diesel engine tail gas treatment, in particular to a mining explosion-proof diesel engine tail gas treatment device which comprises a treatment box body, a tail gas inlet and a tail gas outlet are formed in the two sides of the treatment box body respectively, a splitter plate is arranged in the treatment box body, and a plurality of splitter holes are formed in the splitter plate. According to the device, the entering tail gas is uniformly shunted through the shunting plate, so that the treatment effect of the subsequent purification step is favorably improved. Tail gas often contains impurities such as oil stains and carbon deposition particles, and shunting holes are prone to being blocked after long-time operation. The through mechanism arranged in the device can be automatically started when blockage is detected, the flow dividing hole is physically dredged through the dredging rod, the airflow channel is effectively recovered, the continuity and stability of the tail gas treatment process are guaranteed, the equipment shutdown time caused by blockage is shortened, and the overall operation efficiency is improved.

According to the nickel-based catalyst and the preparation method and application thereof, through Ga modification, the methane cracking depth can be reduced, and then carbon deposition is effectively inhibited; ceO2 oxygen vacancies can effectively activate CO2, the generated intermediate oxygen species O further reacts with deposited carbon so as to achieve the purpose of carbon cleaning, the GaxNi / CeO2 catalyst is prepared by adopting a urea homogeneous precipitation method, 1000-hour long-term stable catalytic conversion of the nickel-based catalyst in a carbon dioxide methane dry reforming reaction is achieved, and the catalyst has the advantages of simple process, low cost and high efficiency. The nickel-based catalyst prepared by the method can keep good catalytic stability.

The invention relates to a catalyst for preparing cyclododecanone through cyclododecanol dehydrogenation and a preparation method and application thereof. The catalyst component comprises copper, zinc, zirconium, sodium, calcium, aluminum and iron; the catalyst is prepared from the following components in percentage by mass in an oxide form: 40 to 65 weight percent of copper oxide, 10 to 21 weight percent of zinc oxide, 10 to 30 weight percent of zirconium oxide, 5 to 20 weight percent of sodium oxide, 1 to 5 weight percent of calcium oxide, 0.5 to 1.5 weight percent of aluminum oxide and 0.05 to 0.5 weight percent of iron oxide. In one embodiment, according to the preparation method of the catalyst provided by the invention, water vapor is added during roasting in a nitrogen environment, so that the release speed of carbon dioxide is controlled, and formation of carbon deposition in the roasting process is reduced. The catalyst can solve the problem of low selectivity caused by low dehydrogenation reaction conversion rate and many by-product cyclododecene, and has the characteristics of high strength, good hydrothermal resistance, long service life and the like.

This invention relates to the field of chemical synthesis technology, specifically disclosing a high-temperature pyrolysis reaction system and its application. The high-temperature pyrolysis reaction system of this invention employs a two-stage reactor design and is filled with a differentiated catalyst. Combined with acetone as an intermediate feedstock between the two stages, it improves the feedstock conversion rate and the selectivity of the target product. The biomimetic integral catalyst solves the problems of poor mass transfer, high pressure resistance, and backmixing caused by traditional packing materials, achieving precise control of the pyrolysis time and inhibiting secondary polymerization and reverse reactions of the product at high temperatures. Through synergistic optimization of reactor configuration, catalyst structure, and separation technology, the entire system effectively suppresses carbon deposition, achieving efficient preparation of dimethyl ketene. This invention forms an integrated high-temperature pyrolysis reaction system from pyrolysis reactor design, catalyst structure design, and improved separation technology, and applies it to the pyrolysis of isobutyric anhydride to produce dimethyl ketene, achieving high feedstock conversion rate and high selectivity of the target product.

The invention belongs to the technical field of catalysts, and particularly relates to a waste PVC derived carbon composite metal material and a preparation method and application thereof. The waste PVC derived carbon composite metal material comprises a carbon carrier, an active component and a modification reagent, wherein the active component and the modification reagent are loaded in the carbon carrier. According to the present invention, with the introduction of the modification reagents, the electronic structure around the active component metal is adjusted, such that the two modification reagents and the active metal component produce the synergistic effect, the metal component can be stably anchored on the carbon carrier, the dispersibility of the active metal is significantly improved, and the catalytic performance of the catalyst is further improved. Meanwhile, the coordination effect between the active metal component and the modification reagent inhibits the loss of the active metal, the content of the active metal component in a high valence state is increased, and the carbon deposition content in the catalyst is also obviously reduced.

This invention provides a self-sealing, anti-carbon-deposit, electrically symbiotic solid oxide fuel cell structure, relating to the field of battery technology. The battery structure includes a connecting weight reforming plate, an anode, an electrolyte, and a cathode. The connecting weight reforming plate includes a connecting body, with a battery support porous region and an oxidation gas flow channel respectively on its upper and lower surfaces. The lower surface of the battery support porous region has a reforming and reforming gas flow channel, and a reforming porous region is located between the reforming and reforming gas flow channel and the oxidation gas flow channel. The reforming porous region is separated from the upper and lower flow channels by a leak-free wall. The anode, electrolyte, and cathode are sequentially stacked on the upper surface of the battery support porous region. This battery structure achieves self-sealing of the reformed fuel and reformed gas, reducing the sealing difficulty of planar SOFCs. The indirect reforming of the fuel in the reforming porous region avoids excessive local thermal stress during internal reforming, which could cause battery structural damage and anode carbon deposition, significantly improving battery performance and service life.

The utility model relates to the technical field of calcium carbide furnace purification, and discloses a special ash removal device for a calcium carbide furnace, which comprises a first calcium carbide furnace body, a second calcium carbide furnace body is arranged at the right end of the first calcium carbide furnace body, and air shock wave ash removal mechanisms are arranged at the outer ends of the first calcium carbide furnace body and the second calcium carbide furnace body. Sound wave ash removal mechanisms are arranged at the tops of the first calcium carbide furnace body and the second calcium carbide furnace body, and accumulated ash adhered to a heat exchange tube bundle can be removed through an air shock wave ash removal device by means of energy of instantly generated supersonic fluid shock waves (shock waves) through a pressure relief explosion release technology; compressed air is instantly emitted into the first calcium carbide furnace body and the second calcium carbide furnace body through the air shock wave ash removal mechanism, vibration and impact effects are generated in the equipment, dust and deposited carbon are removed from the surface of the equipment through the vibration and impact effects, the deposited dust can be effectively loosened and stripped, and therefore the ash removal effect is achieved.

This invention discloses a supported zirconium-based catalyst, its preparation method, and its application. It includes a zirconium-based support and a noble metal supported on the zirconium-based support. The zirconium-based support includes one or more of a zirconium-based composite oxide support and a zirconium-based metal-organic framework material. The zirconium-based composite oxide support includes a composite of zirconium oxide and other oxides, and the other oxides include oxides of one or more elements selected from Si, P, Ce, and Mg. The above-mentioned supported zirconium-based catalyst increases the interaction between the supported noble metal and the support by introducing Si, P, Ce, or Mg into the zirconium-based support to adjust the electron cloud density or oxygen vacancy concentration of the zirconium-based support. By using a zirconium-based metal-organic framework material with regular channels to support the noble metal, reactants and products can diffuse relatively quickly and smoothly, thereby avoiding excessive side reactions and carbon deposition caused by excessive retention of reaction intermediates or products.

The invention relates to the technical field of hydrogen production through methane cracking, in particular to a sea urchin-shaped composite catalyst, a preparation method thereof and application of the sea urchin-shaped composite catalyst in hydrogen production through methane cracking. The obtained sea-urchin-shaped composite catalyst has a sea-urchin-shaped appearance, can efficiently catalyze methane cracking to produce hydrogen, simultaneously captures CO2 produced by vapour gasification carbon deposition in a catalyst regeneration process to generate CaCO3, promotes the gasification hydrogen production of the carbon deposition and strengthens the removal effect of the carbon deposition, and the generated CaCO3 can also be converted into CO in situ, so that the catalyst has a good application prospect. The obtained catalyst has good anti-sintering performance and excellent recycling performance.

The application discloses a paper pulp molded product production line. The paper pulp molded product production line comprises a forming device, a drying device and a cutting device. The drying device comprises a second upper mold, a second lower mold, a second lifting driving assembly, a heating assembly and a second vacuum pumping assembly. The second vacuum pumping assembly sucks air into the second cavity through the second channel structure, so that water vapor flows away from the second channel structure, thereby reducing the possibility of fiber debris carried by water vapor diffused in the air adhering to the dry embryo, improving product quality, and reducing the possibility of carbon deposition caused by the fiber debris adhered to the second upper mold and the second lower mold. At the same time, by setting the sealing structure, the sealing property of the second cavity is improved, the pressure of the water vapor passing through the second channel structure is improved, the fiber adhered in the second channel structure is carried away, the cleanliness of the second channel structure is maintained, and the possibility of carbon deposition in the second channel structure is reduced.

The application belongs to the technical field of intake valve carbon deposit thickness early warning, and discloses a device for early warning of excessive carbon deposit thickness on the back surface of an intake valve of a vehicle engine, which comprises a cylinder body and an intake valve, the intake valve is movably connected with the cylinder body, the upper end of the intake valve is provided with an air inlet pipe, and the lower end of the intake valve is provided with a combustion chamber. A gap is left between the contact ring and the intake valve, when the bottom surface of the contact ring and the carbon deposit thickness on the back surface of the intake valve exceed a dangerous height, the carbon deposit on the back surface of the intake valve drives the contact ring to move upward when the intake valve moves upward, thereby driving the first magnetic ring to move upward, and driving the transmission column to move upward, the second insulating ring and the connecting ring are driven to move upward, the connecting ring is in contact with the first connecting piece and the second connecting piece, the first connecting piece is connected with the second connecting piece, the alarm circuit in the display control end is connected, the driver is prompted, and early warning of excessive carbon deposit thickness on the back surface of the intake valve is realized.

The invention provides a carbon combustion flue gas pollutant treatment device, and belongs to the field of separation treatment equipment.The carbon combustion flue gas pollutant treatment device specifically comprises a bearing barrel, a fixing disc, a cleaning frame and a lifting shaft, and the bearing barrel is in butt joint with a smoke exhaust pipeline; the fixing disc is connected with the bearing cylinder, and the inner space of the bearing cylinder is divided into an upper area and a lower area. The cleaning frame is used for scraping pollutants on the inner wall of the smoke exhaust pipeline and carrying the pollutants; the lifting shaft is movably connected with the fixed disc, and the lower end is fixed on the cleaning frame; in the vertical moving process of the lifting shaft, the cleaning frame is driven to vertically move, and meanwhile the cleaning frame is made to rotate; compared with the prior art, the cleaning frame and the fixing disc are connected through the lifting shaft, the cleaning frame can be rotated by controlling movement of the lifting shaft, carbon deposition pollutants on the inner wall of the smoke exhaust pipeline are cleaned through the cleaning frame, the carbon deposition pollutants are driven to vertically move, the cover plate is arranged below the fixing disc, and the cover plate is arranged below the fixing disc. After the cover plate is matched with the cleaning assembly, the carbon deposition pollutants are crushed into small particles, and the small-particle pollutants are discharged along with the flue gas.

The invention discloses a novel benzene hydrogenation catalyst and a preparation and use method thereof, and belongs to the technical field of catalysts. Aluminum oxide is modified, so that the surface acidity of the carrier is reduced, and the problem that the catalyst is easy to deposit carbon in use is solved; by adding the structural aid, the applicable temperature range of the catalyst is widened, side reactions are reduced, the performance of the catalyst is improved, the thermal stability of the catalyst is enhanced, and the service life of the catalyst is prolonged.

The invention belongs to the technical field of blast furnace ironmaking, and particularly discloses a system for improving heat transfer efficiency of HyCROF furnace gas heating furnaces, which comprises a blast furnace, three heating furnaces are connected in parallel on the blast furnace, two hot blast valves are connected in series on each communicated pipeline, each heating furnace is provided with a combustion air valve, a cold gas valve and a steam valve, and two flue gas branch pipes are arranged at the lower part. One flue gas branch pipe is communicated with a chimney, a flue valve, a flue thermocouple and a CO and O2 gas detector are arranged on a communicating pipeline, a waste gas inlet valve, a self-circulating fan and a waste gas outlet valve are arranged on the other flue gas branch pipe, an outlet pipeline is communicated with a coal gas branch pipe, a coal gas valve and a combustion valve are arranged on the coal gas branch pipe, and a thermocouple is arranged at the top of the heating furnace. The carbon deposition generated in the coal gas heating process is cleaned, so that the heat transfer efficiency of the coal gas heating furnace is effectively improved, and the problems that the heat transfer efficiency of the coal gas heating furnace is reduced and temperature distribution is uneven due to the fact that carbon deposition is formed by coking in holes of the checker bricks of the coal gas heating furnace are solved.

The invention discloses a rare earth element modified nickel-based nano-catalyst and a preparation method and application thereof.The rare earth element modified nickel-based nano-catalyst comprises a carrier and an active component loaded on the carrier, and the carrier is cerium dioxide and yttrium oxide co-doped three-dimensional ordered silicon dioxide nanoparticles; the active component is metal nickel. The application refers to the application of the catalyst in preparation of synthesis gas through carbon dioxide methane reforming. According to the invention, rare earth element doped and modified three-dimensional ordered silicon dioxide nanoparticles are used as a carrier, nickel metal is loaded on the nanoparticles, and the problem of carbon deposition can be effectively reduced by adjusting the interaction of alkaline sites and oxygen vacancies on the surface of the catalyst and the metal carrier. The method provided by the invention is helpful for realizing industrialization of a carbon dioxide methane catalytic reforming reaction, realizing a carbon emission reduction target and solving a green electricity energy storage problem.

The present invention relates to a dry reforming catalyst, and more particularly to a dry reforming catalyst based on a new concept, which significantly extends catalyst life by significantly suppressing the phenomenon of carbon deposition, the greatest challenge in conventional dry reforming technology, through a new configuration that is the exact opposite of the conventional approach for producing synthesis gas in a reducing gas-based carbon reaction system.

A direct reduction system and method utilizes a direct reduction shaft furnace to reduce iron oxide using reducing gas received from a reduction / recirculation gas loop. An electro-gas heating system, located in the reduction / recirculation gas loop, heats the reducing gas with supplemental hydrogen and / or natural gas before introducing it into the shaft furnace. The gas heating system sequentially includes: a primary gas heating unit that first heats the reducing gas to a temperature below 600°C or above 700°C using a direct or indirect heating mechanism to avoid carbon buildup in the gas heating system; and a secondary gas heating unit that secondarily heats the reducing gas to a temperature of 900°C to 1100°C using a direct heating mechanism.

The invention discloses an engine pedestal carbon deposition cleaning test method, and belongs to the technical field of engine performance detection. The method comprises the following steps: preparation before test; photographing and recording the initial carbon deposition state of the engine; warming up the engine; the engine is cyclically operated according to a plurality of preset working conditions, and ECU data are monitored and collected in real time in the operation process; stopping to check the carbon deposition condition of the engine according to a preset carbon deposition check node, and photographing and recording; and comparing the photos of the carbon deposition state of each carbon deposition inspection node, and evaluating the carbon deposition cleaning effect. According to the method, by presetting a circulating multi-working-condition operation strategy and combining real-time monitoring and collection of ECU core parameters, systematic removal of carbon deposits on key parts such as a combustion chamber and a valve assembly is achieved. Generation of new carbon deposits is reduced by dynamically adjusting the combustion state, a plurality of inspection nodes are arranged, a quantitative comparison basis of the carbon deposit change process is formed, and the problem that in the prior art, a standardized rack cleaning means is lacked is solved.

A method for controlling carbon deposits in an internal combustion engine using a nitrogen-containing surfactant is disclosed. The nitrogen-containing surfactant is 【Chemical 1】 JPEG2026511712000032.jpg1961 defined as or its acceptable salts, [wherein X 1 and X 2 are independently H, C, N, O, or S, and X 1 or X 2 independently contains one or more C2-C 20 alkyl groups or one or more aromatic rings, and each A, B, and D is selected from hydrogen, a monovalent organic group, and a monovalent heterocyclic organic group in the form of a group or moiety bonded through a carbon atom, and any two or more of A, B, and D may optionally be bonded together to form a cyclic structure, and X 1 and X 2 may optionally be bonded together to form a cyclic structure], or one or more nitrogen-containing surfactants selected from aliphatic hydrocarbyl-substituted amines or hydrocarbyl-substituted poly(oxyalkylene)amines. Fuel compositions and concentrate compositions containing the nitrogen-containing surfactant are also disclosed.

The invention provides a method for producing ethylene and propylene by catalytic conversion of a heavy raw material, which comprises the following steps: introducing a catalyst A containing a Y-type molecular sieve, a modified MSE structure molecular sieve and a modified ZSM-5 molecular sieve into a first reaction zone of a riser to react with the heavy raw material; the separated C4-C12 non-aromatic hydrocarbon component enters a fluidized bed reactor to react with a preheated catalyst B containing a modified MSE structure molecular sieve and a modified ZSM-5 molecular sieve, and a partial carbon deposition catalyst B which is reacted with the C4-C12 non-aromatic hydrocarbon component (light petroleum hydrocarbon) and forms slight carbon deposition is introduced into the middle part of a second reaction zone of the riser; a first oil agent mixture (an intermediate product of heavy raw oil cracking) is preferentially reacted with the catalyst B, so that the concentration of the catalyst B in the second reaction zone is improved, the hydrogen transfer activity of the catalyst in the second reaction zone is reduced, the generated propylene is prevented from further generating propane, the propylene selectivity is improved, the ethylene and propylene selectivity is improved, and the yield is high.

The invention belongs to the technical field of image anomaly detection, and particularly relates to a combustion chamber inner wall carbon deposition detection method and system based on machine vision so as to solve the technical problem that an existing method is prone to interference and misjudgment due to neglect of texture directivity and lack of adaptivity. The detection method comprises the following steps: S1, calculating a kurtosis coefficient of a global brightness histogram of an RGB image to obtain a first chrominance component and a second chrominance component; s2, acquiring respective high-frequency sub-bands in horizontal, vertical and diagonal directions under at least two scales; calculating a directivity index representing the anisotropy degree of the chrominance noise; s3, determining a judgment threshold value of the directivity index; and S4, performing weighted summation on the chrominance noise energy obtained under each scale in combination with the center frequency corresponding to each scale to obtain a comprehensive noise index representing the carbon deposition degree. The comprehensive noise index obtained through multi-scale information fusion can accurately represent the carbon deposition degree.

The invention relates to the technical field of shift catalyst presulfurization, in particular to a thermal coupling circulating sulfurization device and a thermal coupling circulating sulfurization process, the device comprises a preheating assembly used for introducing a mixed gas of N2 and H2S gas with a set concentration; the preheating assembly comprises a heater and a heat exchanger which are connected in sequence, and the heater and the heat exchanger respectively raise the temperature of the mixed gas to t1, t2 and t1lt; t2; the heating assembly is connected with the preheating assembly and used for receiving the mixed gas preheated by the preheating assembly and heating the mixed gas to t3 and t3gt; t2; the pre-vulcanization tower is connected with the heat exchanger; an outlet of the pre-vulcanization tower is communicated with the heat exchanger and is used for discharging high-temperature mixed gas after reaction into the preheating assembly to serve as a heat exchange heat source; the heat exchanger is further connected with the heater through a cooling circulation assembly so as to recycle N2 and H2S; according to the invention, the vulcanization and activity of the catalyst can be improved, the carbon deposition of the catalyst and the out-of-control reaction caused by too high temperature can be avoided, the driving process is simplified, and the production efficiency is improved.