573 results about "Warming process" patented technology

The invention discloses a method of vanadium slag direct entering high temperature roasting furnace calcify roasting, that is, high calcium vanadium slag or ordinary vanadium slag and lime or limestone are mixed uniformly without the gradual heating up process from low temperature to high temperature, the mixture enters into the roasting furnace of more than 600 DEG C for calcified roasting., the vanadium of the vanadium slag is changed into vanadium acid calcium, vanadium of the roasting clinker is dissolved into the solution under the leaching function of sulphuric acid solution, vanadium oxide and the like vanadium products are further made. The invention needs no gradual heating up process from low temperature to high temperature of the prior sodium treatment roasting, thereby reducing roasting time, improving productivity of unit and reducing production cost.

An apparatus for preventing a filter for purifying exhaust gas emitted by a vehicle diesel engine from overheating is provided. The filter filters particulate matter in exhaust gas. Particulate matter that is accumulated in the filter through filtering is burned and purified by executing a temperature increase process in which the filter is heated. The apparatus includes an electronic control unit as overheat prevention means. During the temperature increase process, the overheat prevention means executes an increase process for increasing the flow rate of exhaust gas when the filter is likely to overheat. As a result, the filter is effectively prevented from overheating.

The invention discloses an active carbon prepared from waste plant-based biomass, and a preparation method thereof. The method comprises the following steps: crushing 100 parts of plant-based biomass, uniformly mixing and dipping the crushed plant-based biomass, 0-200 parts of a chemical activator and 1-200 parts of one or more of nitrogen-containing phosphates, and carrying out heating carbon-forming activation to obtain the active carbon; or crushing 100 parts of plant-based biomass, uniformly mixing the crushed plant-based biomass with one or more of 1-200 parts of nitrogen-containing phosphates, forming carbon, mixing and dipping the obtained carbon and 0-200 parts of the chemical activator, and heating and activating to obtain the active carbon; or crushing 100 parts of plant-based biomass, uniformly mixing the crushed plant-based biomass with one or more of 1-200 parts of nitrogen-containing phosphates, forming carbon, and physically activating the obtained carbon in the heating process to obtain the active carbon, wherein the above heating mode comprise temperature programmed mode, uniform heating re or rapid heating, and the stay time is 30min ~ 4h. The method has the advantages of low raw material cost, simple operation and high active carbon yield, and the active carbon has a nitrogen-containing functional group and an excellent adsorption performance.

Process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation at a temperature in the range of from 380 to 500 DEG C. in a fluidized-bed reactor containing a catalyst composition preheated to a temperature of not lower than 300 DEG C. and lower than the ammoxidation reaction temperature, the catalyst composition comprising a carrier having supported thereon an oxide catalyst comprising a compound oxide of molybdenum, vanadium, niobium and at least one element selected from tellurium and antimony, wherein the ammoxidation of propane or isobutane is preceded by a specific temperature elevation operation in which the catalyst temperature in the reactor is elevated, while supplying into the fluidized-bed reactor a molecular oxygen-containing gas together with a combustible gas capable of combustion by reaction with the molecular oxygen in the presence of said catalyst composition, until the temperature of the catalyst composition reaches said ammoxidation reaction temperature. The process of the present invention is advantageous in that the temperature elevation of the catalyst can be performed without suffering a deterioration of the catalytic activity during the temperature elevation, thereby allowing the catalyst to fully exhibit its performance.

The invention provides a wood ultra-high temperature heat treatment method for improving wood dimensional stability and durability. The heating-up process of the treatment method includes: the first heating-up stage, using only water vapor as isolating oxygen protect media; the subsequent second heating-up stage, introducing nitrogen and using the mixture gas of nitrogen and water vapor as isolating oxygen protect media to reject degradation of wood main component cellulose then prevent the decline of wood strength. The products treated by the invention have good dimensional stability and durability, while strength decline is small; Moreover, the needed processing time of the treatment method is short, production efficiency is high and cost is low.

The invention relates to a technology for producing 5-acetyl amido benzimidazolone. The condensation process is as follows: o-phenylendiamine, carbamide, water and concentrated sulfuric acid are added into a condensation reaction kettle step by step, the pH value is controlled to between 6 and 7, and benzimidazolone is obtained by drying the mixture; the nitration process is as follows: the benzimidazolone, chlorinated benzene and concentrated sulfuric acid are added into a nitration reaction kettle, the chlorinated benzene is reclaimed and purified by reduced pressure distillation and water boiling, and 5-nitryl benzimidazolone is obtained by drying the mixture; the reduction process is as follows: the 5-nitryl benzimidazolone, iron powder, hydrochloric acid and water are added into a reduction reaction kettle, the mixture is subject to suction filtering, cooling, crystallization and drying after the reaction for producing the 5-amino benzimidazolone; and the acetylization process is as follows: the 5- amino benzimidazolone, Diketene, phosphoric acid, caustic soda liquid and water are added into an acetylization kettle, the pressure inside the kettle is discharged in the temperature rising process, and the mixture is subject to suction filtering and drying to produce the 5-acetyl amido benzimidazolone. The process has the total yield coefficient up to 75 percent, purity quotient more than 99 percent and the product quality which meets the international standards of the same products at home and abroad.

The invention discloses a temperature control system-based evaporation temperature control method for an OLED (Organic Light Emitting Diode) organic layer. The evaporation temperature control method comprises a preheating process and an evaporation process, wherein the preheating process is divided into three temperature-rise processes with temperature gradients; the evaporation process comprises a step of controlling the temperature of an evaporation source by controlling the power of an evaporation power supply on the basis of an actually-measured deposition rate curve. According to the temperature control system-based evaporation temperature control method for the OLED organic layer, the stabilization time of the temperature of the evaporation source and the deposition rate is shortened, the use ratios of the organic materials of the evaporation source are improved, meanwhile, the degradation, the degeneration and the like of the organic materials caused when the temperature rise is too fast or the risen temperature is too high are avoided, and the production cost is lowered; by utilizing a characteristic that the evaporation rate is changed by 20-30% when the evaporation temperature is changed by 1%, the accuracy of the temperature control is improved, the stability of evaporation temperature is maintained, and the uniformity of evaporated films is improved.

The invention provides a combined cooling power generation composite system based on a supercritical organic Rankine cycle and belongs to the field of industrial energy conservation. An expansion machine, a power generator and a steam compressing cold cycling compressor of the Rankine cycle are connected coaxially, same organic working medium is used to be simultaneously cooled in a condenser, and a steam compressing refrigerating cycle is coupled effectively on the basis of basic organic Rankine cycle. In addition, supercritical pressure is used to allow heat rising of organic working medium in a heat absorber to be well matched with temperature changing curve of a heat source, system irreversible loss is further lowered, and waste heat recycling rate is improved. Industrial smoke water heat or other water heat sources are used as driving force, combined cooling power generation is performed by taking refrigerating as priority, refrigerating is not performed by using smoke waste heat for power generation and using power for refrigerating, and accordingly loss caused by energy conversion is reduced. Cooling amount and power output amount can be flexibly adjusted according to cooling amount requirements.

A provided yoghourt fermenting apparatus comprises a housing, a fermentation chamber enclosed by the housing, and a heating device; the fermentation chamber is inside provided with a temperature sensor and a yoghourt cup for holding a substance; the bottom of the yoghourt cup is provided with a mass sensor measuring the mass of the substance in the yoghourt cup; and the fermenting apparatus also comprises a controller for adjusting the heating device and enabling the device to reach a preset fermentation temperature at preset time and keep the fermentation temperature. The yoghourt fermenting method employing the yoghourt fermenting apparatus comprises utilizing the temperature sensor and the mass sensor to measure the temperature and the mass of fresh milk, and controlling the heating device via a temperature signal and a mass signal through the controller, so as to enable fresh milk with any mass and temperature to be able to reach a preset fermentation temperature at preset time. By using the method, the heating process before fermentation is controllable, the temperature of fresh milk is capable of rapidly rising to the fermentation temperature, growth of harmful bacteria during heating is limited, and therefore the yoghourt quality can be improved.

The invention provides a coal burning heat medium furnace high-precision temperature regulation and combustion control method and relates to the technical field of DCS industrial control systems, in particular to large-scale chain coal bed burning heat medium furnace (heat medium furnace for short) high-precision temperature regulation and combustion control. As is generally known, the temperature control of the coal burning heat medium furnace depends on the combustion control of the coal burning heat medium furnace. Therefore, a suitable sensor and a suitable transmitter are used to obtain parameters which influence the combustion and the heat medium outlet temperature in the burning process; the factors which influence the combustion and the heat medium outlet temperature are treated differentially and destroyed by adopting multi-circuit regulation when grasping main problems, thus avoiding interaction among the steps; the control algorithm adopts sectional control, feed-forward control and self-adaptive control on the basis of normal PID. According to the scheme, the influence of nonlinearity, much interference, large lag and the like can be overcome, thus realizing automatic control in the heating process and automatic regulation in normal heating, and the actual control precision of the heat medium outlet temperature can achieve plus or minus 0.7DEG C.

The invention discloses an active safety information collecting method and an information service system for an automobile. The information service system for the automobile has functions of prompting the active safety information to prevent an accident from occurring, and modifying and updating a GPS (global position system) navigation chart. The active safety information collecting method comprises the steps that the automobile provided with a lane departure warning system, a front anti-collision warning system and a pedestrian detection and anti-collision warning system sends warning information, and the speed of the automobile and GPS positioning information in the warming process to a remote service platform through a wireless communication network; and the remote service platform conducts data processing, stores a calculated result and road section information in a database, downloads a planned route and occurrence probabilities of warning accidents in all road sections to an on-board client through the wireless communication network, and prompts safety driving before the automobile enters the road sections.

The invention discloses a vitrification frozen stock solution. Each 100 milliliters of the solution contains 0.1-5g of polyvinyl alcohol, 1-30g of dimethyl sulfoxide, 1-30g of 1, 2-propylene glycol and water for the rest. The inventive frozen stock solution contains a penetrability and a non-penetrability cryoprotective protective agents, particularly the polyvinyl alcohol which is taken as the non-penetrability frozen stock solution component, has obvious effects of preventing the ice crystal growth and restraining the recrystallization and is capable of effectively forming the vitrification frozen stock at low temperature. Given the factors including the toxicity of the protective agent and the penetrability, the vitrification property and stability as well as the speeds of warming and cooling, etc. the inventive frozen stock solution is subject to the vitrification state in the cooling process and further guarantees the stability of the vitrification solution in the warming process. The inventive frozen stock solution has simple and all-purpose effects and is applicable to the vitrification frozen stock of various cells, tissues and organs.

The invention discloses a method for determining content of cut stem in cut tobacco based on a thermal analysis technique. The method comprises selecting pyrolysis conditions in a thermogravimetric analyzer, acquiring a weight change curve of multiple cut tobacco samples having known cut stem contents in the temperature programming process, analyzing a sample pyrolysis curve to find an instantaneous mass fraction value having obvious difference of the sample at a certain temperature or a temperature range having large sample pyrolysis curve difference, carrying out corresponding data processing and linear fitting to obtain a cut stem content standard curve equation, testing an unknown sample, and substituting the data into the equation to realize determination of the cut stem content in a cut tobacco sample. Because of the difference of chemical composition and properties of cut stem and cut tobacco, pyrolysis behaviors have difference so that the thermogravimetric analyzer can acquire mass change curves of different samples in the temperature programming process. Through difference analysis of the pyrolysis curve, the cut stem content of the cut tobacco is obtained.

The invention relates to a method for determining a melting behavior and a melting point of a slag-like material, belonging to the technical field of detection of metallurgical slag-like material. The process comprises slag sample preparation, slag sample formation, high-temperature laser sample filling, experimental parameter setting, melting process observation and data and image processing. The method provided by the invention has the advantages that the defect of low accuracy of the slag column deformation method, i.e. the hemisphere point temperature testing method, in the traditional melting point testing can be overcome, and the limitations of difficulties in control of the stability of testing conditions and high testing costs in the method of slag melting in liquid steel can be eliminated. The initial melting temperature of the slag sample from the solid phase to the liquid phase and the melting temperature of the slag sample to the full liquid phase can be captured promptly so as to accurately determine the melting point of the slag sample; and the liquid phase nucleation, growth and other melting changes and behaviors of the slag sample in the heating process can also be analyzed, the direct theoretical basis and technical support can be provided for the curing of liquid slag and the control of metallurgical reaction in the steel-making and iron-making process, and different characteristics of different slag samples in the melting process can be used as an important means for evaluation of high-temperature properties of different slag samples.

The invention provides a production method of a polyoxazolidone laminated board, comprising the following steps: reacting diisocyanate with epoxide resin by taking imidazole compounds as catalyst for producing polyoxazolidon resin during the gradual rise of temperature; and then producing the polyoxazolidone laminated board by using the polyoxazolidon resin. The polyoxazolidone laminated board the end of which is sealed with isocyanate has better mechanical strength, favorable heat resistance and high glass transition temperature above 155 DEG C; and when in use at 180 DEG C or 200 DEG C, the mechanical property and electrical propertye of the polyoxazolidone laminated board are over 70 percent.

The invention discloses a method for controlling an igniter burner of a powered coal pressurized gasifier and provides a method for logic control of an igniter burner of a multi-nozzle counter-position type powdered coal pressurized gasifier. According to the technical scheme, the method comprises the following steps: 1, 'initializing' the igniter burner; 2, 'resetting' the igniter burner in the following way: (1) performing nitrogen sweeping, (2) establishing emptying flows of fuel gas and factory air, and (3) switching on inlet fuel gas and inlet oxygen flow adjusting valves according to a preset valve opening and flow relationship; 3, 'igniting' by the igniter burner in the following way: (1) introducing ignition fuel gas and ignition factory air into the gasifier in sequence and discharging by the igniter, wherein the igniter successfully ignites when a flame detector of the igniter detects a flame signal; (2) introducing heating fuel gas and oxygen into the gasifier in sequence, wherein the ignition of the gasifier is successful when the flame detector detects a flame signal and the hearth temperature of the gasifier is of a rising trend; (3) exiting the igniter and introducing protective nitrogen gas, and (4) switching the fuel gas and oxygen during a heating process; 4 'exiting' the igniter burner; and 5, introducing steam to protect the igniter burner. By adopting the method disclosed by the invention, a logic control scheme and a detection manner are reasonably optimized according to technological requirements of a powdered coal gasification production device, the ignition success rate and security of a water cooled wall gasifier are improved, and the driving time and cost are saved.

A substrate processing apparatus including a vertical reaction container; an insulating wall formed of an insulating material and including a reaction container accommodation chamber for accommodating the reaction container therein; a heater installed in an inner wall of the reception container reception chamber on the insulating wall; an air circulation channel installed vertically in a sidewall of the insulating wall; a blower for distributing air upward or downward in the air circulation channel; intake valves for communicating the air circulation channel with the air; and exhaust valves for communicating the air circulation channel with an equipment exhaust system. In a temperature elevating process and a temperature lowering process, the intake valves and the exhaust valves are switched.

The invention discloses a pressure cooking utensil and a heating control method for the pressure cooking utensil. The pressure cooking utensil comprises a pot body, an inner pot, a cover body, a temperature sensor, a pressure valve, a pressure valve switching mechanism and a control device; the control device controls an inner pot heating device and the pressure valve switching mechanism to conduct cooking process, the cooling process comprises a water absorption process, a warming process, a boiling process and a cooked rice process in sequence, the control device controls the pressure valve switching mechanism, so that in the later period of the boiling process or the earlier stage of the cooked rice process, a steam discharge hole is in an off state, the pressure in the cooking space is kept within the range of the first pressure, and through the configuration of the control device, the time that the pressure in the cooking space is kept within the range of the first pressure is first preset time. According to the pressure cooking utensil, cooked rice is better in taste.