318 results about "Steam injection" patented technology

The invention relates to the technical field of natural gas separation, in particular to a natural gas pipeline oil mist separation system which comprises a gas inlet end, an oil mist separation mechanism, an exhaust end and an oil dirt discharge mechanism, the gas inlet end comprises a natural gas inlet main pipe and two natural gas inlet branch pipes, and the natural gas inlet branch pipes are connected with a filtering device; the two groups of oil mist separation mechanisms are fixedly mounted on the filtering device and are used for separating and removing oil mist in the natural gas; the exhaust end comprises a natural gas outlet main pipe and two natural gas outlet branch pipes; and the oil mist discharging mechanism is connected with the oil mist separating mechanism and is used for recovering and treating the oil mist. The filtering device comprises a filter, and a filtering assembly composed of a filter element support, a coalescence sintering type filter element and a bearing is arranged in the filtering device. The oil mist separation mechanism comprises a high-pressure steam source, a steam conveying pipe, a steam branch pipe and a blade, and oil mist separation is achieved through steam injection. Oil mist in natural gas can be effectively separated, and the filtering efficiency and the natural gas quality are improved.

The invention relates to the technical field of chemical reaction equipment, in particular to a pulse intermittent water vapor bottom blowing coupling mechanical stirring enhanced mixing device which comprises a tank body, a sealing cover is mounted on the top surface of the tank body, a stirring assembly used for stirring the interior of the tank body is mounted on the sealing cover, the stirring assembly extends into the tank body, and the stirring assembly is connected with the tank body. An air outlet head is arranged at the bottom in the tank body, the air outlet head is communicated with a steam generation unit through an air supply pipe, and the steam generation unit is electrically connected with a pulse control unit used for sending variable frequency signals with adjustable pulse frequency to the steam generation unit. The steam injection frequency is controlled through the pulse control unit, the use amount of the steam is reduced, local high temperature generated by the system during continuous injection is avoided, the temperature is more uniform, meanwhile, convection can be further strengthened through nonlinear input, the periodic structure of the system is damaged, and the service life of the system is prolonged. And more chaotic flow regions are formed to enhance mixing and heat transfer efficiency, so that the production efficiency is improved, and the energy loss is reduced.

The invention provides a method and a device for predicting a steam cavity in steam flooding by using an overlap factor, and belongs to the technical field of oil field oil extraction. The method comprises the following steps: determining an incidence relation between wellhead production characteristics of a first production well and a well bottom average temperature value, and determining a well bottom average temperature value of a second production well according to wellhead production characteristics of the second production well by utilizing the incidence relation; determining overlap factors of different displacement layer sections of the first production well; weighting the well bottom average temperature value of the second production well by using the overlay factor of each displacement layer section, and obtaining the well bottom correction temperature of each displacement layer section in the second production well in a one-to-one correspondence manner; and comparing the well bottom correction temperature of the second production well with the well bottom temperature of the steam injection well in the well group where the second production well is located, comparing the well bottom pressure of the second production well with the well bottom pressure of the steam injection well, and identifying the steam cavity of each displacement layer section of the second production well. By means of the method, rapid, accurate and low-cost recognition of the steam cavity is achieved.

The invention relates to a method for treating shale oil crack wall surfaces by using carbon nanotubes to increase the heat transfer capacity of a reservoir, a plurality of horizontal wells are drilled from the ground, the horizontal sections of the horizontal wells form three parallel well rows, the uppermost well row and the lowermost well row are heating wells, and the middle well row is a production well. The fracturing fluid carrying the proppant is injected into the heating well and the production well with the displacement greatly exceeding the stratum absorption capacity, the bottom hole pressure is larger than the stratum fracture pressure, hydraulic fracturing is carried out, a tensional fracture area and a communication well group are generated, and meanwhile it is guaranteed that fractures are not closed after the proppant is filled. Under the condition that the pressure is lower than the formation fracture pressure, a weak acid solution is slowly squeezed into the heating well and the production well, the well wall and the crack wall face are treated, and a large number of corrosion micropores are formed. And under the condition that the pressure is lower than the stratum fracture pressure, a weak acid solution added with the carbon nano tubes is squeezed into the heating well and the production well, so that the carbon nano tubes are adsorbed or filled in the corrosion micropores, and the micropores where the carbon nano tubes are attached are formed. And high-temperature steam is circularly introduced into the heating well and the production well to heat the oil shale stratum. After heating for a certain time, stopping steam injection of the production well, and changing into production; and continuously injecting steam into the heating well. The method is suitable for an oil shale underground in-situ conversion exploitation technology, and is also suitable for geothermal exploitation and heavy oil thermal exploitation.

The invention relates to the technical field of boiler operation management, in particular to a boiler soot blowing steam consumption multi-dimensional data analysis system which comprises a dynamic database construction module, a steam consumption calculation model construction module, an evaluation module and an optimization strategy generation module. The dynamic database construction module is used for cooperatively acquiring the ash scale thickness value of the heating surface partition of the boiler through an infrared thermal imager and a sound wave thickness measuring device, and realizing structured time sequence data fusion in combination with steam parameters and working condition parameters; the steam consumption calculation model building module is used for building a multi-dimensional consumption data set based on space, time and energy efficiency dimensions; the evaluation module outputs a unit ash scale removal steam consumption value, an invalid steam injection proportion value and a regional energy efficiency deviation coefficient value; the optimization strategy generation module generates a soot blowing pressure gradient adjustment strategy and a steam saturation temperature compensation strategy through index correlation analysis, fine evaluation and control optimization of soot blowing energy efficiency can be achieved, and the boiler operation efficiency and the steam utilization rate are improved.

The invention relates to a boiler operation parameter optimization method and system for multi-fuel combustion of multiple solid wastes, and the method comprises the following steps: (1) multi-source data collection: obtaining the heat value, the water content, the chlorine-sulfur ratio and the heavy metal content of the solid wastes in real time through a spectrum analyzer, a visual recognition system and an online sensor; (2) intelligent compatibility optimization: calculating a solid waste mixing ratio by adopting a genetic algorithm based on calorific value balance and pollutant inhibition targets, and controlling a Cl / S molar ratio to be 1.2-1.8 and the alkali metal content to be 1t; 50%; (3) pretreatment and drying: the water content gt; and carrying out microwave-steam combined drying on 25% of solid waste, and dynamically adjusting microwave power, steam injection time and the like. The method has the advantages that through the technical integration of multi-source data fusion, intelligent algorithm optimization and digital twinborn verification, a solid waste co-combustion full-process optimization system is constructed, and ultralow emission of pollutants and safe and economical operation are achieved while the energy utilization rate is increased.

The invention provides an efficient gas mixer and method for nitrogen-free combustion of a steam-injection boiler, a gas mixture comprises a support, a premixer and a main mixer, the premixer and the main mixer are both arranged on the support, one end of the premixer is communicated with an oxygen inlet pipe and a carbon dioxide inlet pipe respectively, the other end of the premixer is provided with a gas distributor, and the gas distributor is communicated with the main mixer. The gas distributor is communicated with a main mixer, and the main mixer is communicated with a gas collector. According to the premixer, the oblique angle is adopted to change the flow direction of gas, so that carbon dioxide and oxygen flow oppositely after passing through the oblique angle and are in a turbulent flow state in the premixer, and the purpose of premixing is achieved. The inner part of the main mixer adopts a corrugated sheet type, and the zigzag corrugated sheet can change the flow direction of the gas for multiple times and increase the turbulence of the gas, so that the carbon dioxide and the oxygen are further uniformly mixed; the gas collector collects uniformly fed mixed gas and sends the mixed gas to the outlet pipe of the mixer, and meanwhile, the flat plate of the collector supports the corrugated sheet to prevent the corrugated sheet from being blown into the outlet pipe of the mixer by the gas to cause blockage.

An adjustable high-temperature steam directional permeation device for a sintering round roller stock bin comprises a directional permeation spray gun system which comprises an adjustable spray gun; one end of the adjustable spray gun is located in the round roller stock bin, and the acting force of materials in the round roller stock bin on the adjustable spray gun at least comprises a component which is in the axial direction of the adjustable spray gun and points to the inner side of the round roller stock bin; the other end of the adjustable spray gun is located outside the round roller stock bin and used for being connected with a steam source. According to the device, the adjustable spray gun is inserted into the round roller bin to conduct steam injection on materials, steam directly reaches a core area of a material layer, steam heat is almost completely absorbed by the materials, heat energy loss is low, and the temperature of the materials is greatly increased; the material is heated by steam from the inner layer of the material, and the thickness of an over-wet layer is obviously reduced because the steam is uniformly dispersed. The spray gun device solves the problem that in the prior art, a spray gun device in a round roller stock bin is poor in preheating effect.

The invention relates to the technical field of rocket launching, in particular to a steam protection rocket launching system which comprises a steam energy storage system, a steam conveying system, a steam releasing system and a launching rack structure. The steam energy storage system comprises a steam boiler, a steam pressure accumulator and a steam energy storage control unit and is used for preparing and storing high-pressure steam before rocket launching. The steam conveying system comprises a steam blending table and a steam supply pipeline and is used for conveying high-pressure steam in the steam pressure accumulator to the steam release system; the steam release system comprises a steam injection unit and a steam injection control system and is used for releasing steam when the rocket is ignited, launched or recovered, forming a steam protection air curtain and reducing thermal shock of high-temperature airflow on the structure. By establishing the high-pressure steam protection air curtain, active protection of structural parts, pipeline parts, hydraulic parts and other parts of the rocket launching system influenced by the gas tail flame area of the rocket engine is achieved, and the durability and reliability of the launching system are improved.

A vehicle refrigerant system using hot gas bypass and steam injection is provided. A steam injection refrigerant system includes a compressor comprising at least a first stage input and a second stage input and an output arranged to provide an output steam refrigerant. A condenser is fluidly coupled to the output of the compressor to receive the output vapor refrigerant, and an evaporator is fluidly coupled between the condenser and the first stage input. The evaporator is arranged to provide refrigerant in vapor form to a first stage input of the compressor. A cooler is fluidly coupled between the condenser and both the first stage input and the second stage input. The chiller is arranged to inject refrigerant in the form of steam into the first stage input or the second stage input. A bypass branch fluidly couples the output of the compressor to the first stage input of the compressor to provide at least some output vapor refrigerant to the first stage input without routing through the condenser, evaporator, and cooler.

This invention relates to the field of concrete process temperature control technology, and discloses a method and system for continuous regulation of the concrete steam curing process based on temperature gradient feedback. The method includes: constructing a steam curing temperature time-series dataset; reconstructing the temperature field inside the steam curing kiln; compensating for ambient temperature on the original temperature measurement data of the component surface; forming a steam regulating valve opening control sequence; and performing online parameter correction. Compared to existing technologies that directly use the component surface temperature measurement value as the steam valve regulation feedback, this invention addresses the technical problem of failing to obtain an effective surface temperature gradient reflecting the component's hydration heat release state, especially under conditions of uneven steam injection and localized heat dissipation differences within the steam curing kiln. This application improves the accuracy of temperature gradient feedback control during the concrete steam curing process by reconstructing the temperature field inside the steam curing kiln and incorporating the estimated ambient temperature at the component surface measurement points into the surface temperature compensation and differential gradient calculation process.

This application discloses a steam distribution method and device based on machine learning. The method includes: establishing a downhole comprehensive reservoir model using a sequential Gaussian simulation method based on the actual downhole formation points of a selected target well; establishing a heavy oil thermal recovery data prediction model using a linear model based on the simulation parameter values ​​of the simulated formation points in the downhole comprehensive reservoir model; determining the total amount of steam to be allocated to the target well in real time based on the heavy oil thermal recovery data prediction model and a net present value formula, and determining the steam utilization rate based on the total steam injection volume. This application establishes a heavy oil thermal recovery data prediction model through machine learning, which can achieve real-time optimization of steam distribution, rationally allocate gas injection parameters for each oil production well, avoid resource waste, and effectively improve the production efficiency of heavy oil reservoirs.

The invention relates to the field of oil field steam injection boiler equipment, in particular to a high-capacity subcritical coal-fired CFB type oil field steam injection boiler, the highest pressure of the boiler can reach subcritical pressure, the boiler comprises a steel frame, and a boiler barrel, a hearth water cooling wall and a flue are arranged on the steel frame. A superheater, an upper-level economizer, SCR equipment, a lower-level economizer and an air preheater are sequentially arranged on the flue, a softened water pipeline used for conveying oilfield sewage is arranged on the steel frame, the softened water pipeline is sequentially communicated with the lower-level economizer, the upper-level economizer and a bottom coil pipe of a hearth water cooling wall, and the middle and a top coil pipe of the hearth water cooling wall are communicated with a boiler barrel. A separating assembly used for separating saline water and steam is arranged in the boiler barrel, a steam pipeline is communicated between the top of the boiler barrel and the superheater, the bottom of the boiler barrel is communicated with a salt discharging pipe, and a pressure measuring piece used for monitoring pressure changes in a coil pipe is arranged on the coil pipe of the hearth water cooling wall. The method has the effect of reducing the equipment investment cost.

The application discloses a kind of composite type steam injection vacuum pump unit of green energy utilization system, comprising: vacuum crystallizer, first condenser, for the condensation unloading of condensable gas in mixed gas in vacuum crystallizer, second injection pump, its mixed gas inlet is connected with the primary side outlet of first condenser, second condenser, for the condensation unloading of condensable gas in mixed gas being extracted by second injection pump and being sent into it, third injection pump, its mixed gas inlet is connected with the primary side outlet of second condenser, third condenser, for the condensation unloading of condensable gas in mixed gas being extracted by third injection pump and being sent into it, wherein, cooling water system is natural water source, cooling tower or refrigeration equipment, and water supply water temperature is 1.0-15.0 degrees;The application can utilize natural water source to achieve the effect of reducing steam consumption, reduce cost, under the condition of 1.0-15.0 degrees low temperature, can save steam volume by 85-90% at most.

The invention provides a method for improving the recovery ratio of thickened oil in the middle and later periods, which comprises the following steps of: establishing a line side drilling row and steam injection well row linear staggered well pattern in an oil reservoir well pattern, and changing the inclined upper part of a core well into a steam injection well to form a steam injection well row; well beside the steam injection well is a sidetracking well, sidetracking well rows are formed, the steam injection well rows and the sidetracking well rows are linearly distributed in a staggered mode, hydraulic tapping is conducted to form a guide seepage area, area communication is formed through gas injection reinforcement, targeted displacement and efficient utilization of remaining oil are achieved, and the recovery efficiency is greatly improved.

The invention relates to the technical field of boilers, and provides a steam optimization production method and equipment for a steam injection boiler of a thickened oil recovery coal-fired fluidized bed, and the production method comprises the steps: 1, constructing a coupling model of a water supply quantity feedback controller and a steam dryness feedforward predictor, 2, training and optimizing the coupling model in a data driving mode, wherein the coupling model is used for predicting the dryness of steam produced under the data conditions of specific water supply quantity, fuel characteristics and fluidization air quantity; 3, inputting current water supply quantity, fuel characteristics and fluidization air quantity data, and predicting the dryness of steam produced under the current production condition by utilizing the trained model; 4, based on the predicted steam dryness, on the basis of steam dryness prediction, under the current water supply condition, on the basis of mean square errors of the predicted steam dryness and rated steam dryness, fuel characteristics and fluidization air volume data are optimized and adjusted, and steam optimized production is achieved; a feedforward predictor is constructed through a time-varying long-short-term memory network, and accurate capture is achieved.

The application discloses a kind of frozen soil area pumping drainage type pressure steam pre-melting method and system, comprising: surveying the deformation of surface, selecting frost heaving and uneven settlement disease serious road section, determining the depth and range of soil ice layer;Steam injection hole is arranged above the soil ice layer treatment layer on the side of roadbed slope, pumping drainage hole is arranged in the center of roadbed;Steam generator is heated and injected into soil ice layer, while pumping drainage, steam target melting ice is realized;While steam heating and pumping, monitoring pre-melting progress and effect are carried out using geophysical prospecting method.The high-temperature steam is transported to the interior of soil body by steam pipe, when high-temperature steam contacts with low-temperature soil body, heat conduction occurs, solid ice in the interior of frozen soil melts, after all the ice-rich frozen soil and soil ice layer in the climate warm and humid influence range are melted, the melting range is accurately controlled by pumping drainage, the bearing capacity of foundation is improved, and the possible deformation of frozen soil melting settlement is reduced.

The invention discloses a balanced steam injection device for a multi-medium composite thermal recovery horizontal well. The balanced steam injection device comprises a heat insulation oil pipe, a vertical sleeve, a thermosensitive packer, a steam injection pipe column unit, an injection allocation device, a horizontal oil pipe and a horizontal screen pipe. The heat insulation oil pipe is arranged in the vertical sleeve and is connected with the horizontal oil pipe; the thermosensitive packer is arranged at the joint of the heat insulation oil pipe and the horizontal oil pipe; the vertical sleeve is connected with the horizontal screen pipe; the horizontal oil pipe is arranged in the horizontal screen pipe; the steam injection pipe column unit is arranged in the heat insulation oil pipe and the horizontal oil pipe; the multiple injection allocation devices are arranged on the steam injection tubular column unit. Multi-pipe steam injection is adopted, and the proportion of all components of the composite media of different well sections of the horizontal well can be adjusted; according to the horizontal section packer, the injection allocation device is divided to correspond to all well sections of the horizontal well, the size of the injection allocation valve is adjusted according to the oil layer physical properties of the different well sections of the horizontal well, the composite thermal medium is balanced, the heat injection efficiency is improved, and the thermal recovery effect is further improved.

The present invention discloses a steam-reinjection gas-steam combined cycle system with waste heat recovery. The system comprises: a gas turbine FGH / TCA system, a combustion chamber steam reinjection device, and a waste heat boiler combined heat exchange module. The gas turbine FGH / TCA system is equipped with an FGH heat exchanger and a TCA heat exchanger. The cold-side inlet of the FGH heat exchanger is connected to a cold natural gas pipeline, and the outlet is connected to the combustion chamber. The hot side of the FGH heat exchanger is connected to the compressor extraction pipeline, and the cold side is connected to the hot-side outlet of the FGH heat exchanger. Part of the outlet water from the high- and medium-pressure economizers of the waste heat boiler is heated to a set temperature in the FGH, and then fed into the cold side of the TCA heat exchanger to absorb the heat of the compressor extraction to become superheated steam, which is then injected into the combustion chamber and the cold re-header. The present invention solves the heat imbalance problem of the FGH / TCA system, performs steam injection modification on the combustion chamber, and improves the system output power and efficiency.

The present application relates to the technical field of tunnel construction equipment, and discloses a prefabricated assembly type TBM arc-shaped segment maintenance device, which comprises an assembly framework, a plurality of prefabricated maintenance warehouses are arranged at mounting positions of the assembly framework, a heat and humidity self-circulation assembly is arranged in the prefabricated maintenance warehouse, a floating support assembly is arranged in the assembly framework, the prefabricated maintenance warehouse is indirectly supported on the assembly framework through the floating support assembly, and a steam injection quick plug assembly is arranged in the prefabricated maintenance warehouse; the heat and humidity self-circulation assembly comprises a steam distribution row, the steam distribution row is mounted at the bottom of the inner wall of the prefabricated maintenance warehouse, and a plurality of Laval nozzles are mounted at the output end of the steam distribution row. The present application realizes the heat and humidity self-circulation based on fluid mechanics without motor, the structural thermal decoupling based on floating support, and the automatic and quick energy connection based on gravity actuation, so that the operation reliability, structural durability and on-site assembly efficiency of the device are improved.

The invention provides a prediction method and device for a steam cavity in steam flooding and computer equipment, and relates to the technical field of oil field oil extraction. The method comprises the steps that the incidence relation between wellhead production characteristics of a first production well and the bottom hole temperature is determined, and according to the incidence relation, the bottom hole temperature of a second production well is determined according to the wellhead production characteristics of the second production well; calculating the bottom hole pressure of the second production well; and comparing the well bottom temperature of the second production well with the well bottom temperature of the steam injection well, comparing the well bottom pressure of the second production well with the well bottom pressure of the steam injection well, and identifying a steam cavity at the well bottom of the second production well. According to the method, the incidence relation between the wellhead production characteristics and the bottom hole temperature is established by using the production data of the first production well with the bottom hole temperature monitoring data, and the bottom hole temperature of the second production well without the bottom hole temperature monitoring data is predicted by using the incidence relation. And rapid and accurate identification of the steam cavity of the second production well is realized.

The invention belongs to the technical field of coal gas heating, and particularly discloses a metallurgical coal gas staged heating system and method, and the metallurgical coal gas staged heating system comprises a first-stage electric heating device and a second-stage electric heating device which are connected in sequence. The first-stage electric heating device adopts a resistance tube heating mode to preliminarily heat the metallurgical gas to 800 DEG C; the second-stage self-heating device is used for carrying out combustion reaction with high-temperature coal gas by blowing oxygen and carrying out quenching and tempering under the assistance of pulverized coal blowing, and finally, the coal gas is heated to 1400 DEG C or above. Thermocouples are arranged in the system to monitor temperature and pressure, and heating power and reaction gas flow are dynamically adjusted through a central controller, so that accurate temperature control is realized. Meanwhile, the system is provided with nitrogen switching, steam injection carbon deposition prevention and multiple safety protection facilities, the problems of insufficient temperature rise precision, high energy consumption, poor safety and the like in the prior art are solved, and efficient, safe and stable preparation of the high-temperature coal gas is achieved.

A steam injected turbine engine includes a core engine section that generates a first gas flow, a burner where an inlet flow is mixed with fuel and ignited to generate thermal energy, and an evaporator where thermal energy from at least the first gas flow is used to transform water into a first steam flow. The first steam flow is injected into a core flow through the core engine.

Disclosed are methods and compositions for coagulating and clarifying produced waters for use as boiler feed waters, for example for the generation of steam. The methods and compositions are especially useful for treatment of produced waters from steam-injection methods of tertiary oil recovery such as steam-assisted gravitational drainage. Disclosed are compositions comprising a first copolymer having a high molecular weight and bearing a low molar cationic charge and a second copolymer having a lower molecular weight and bearing a high molar cationic charge. The compositions are suitable for addition as coagulants to produced waters that have been treated by warm lime softening. Also disclosed are methods of treating produced waters from steam-injection oil recovery for use as boiler feed waters to generate steam in such steam injection methods

The invention relates to a method for the thermal treatment of a product in the form of a fat or oil with a water content of at most 10% for the inactivation of microorganisms contained in the product, comprising the steps: a) Heating the product in a first heat exchanger to a temperature in the range of 50°C to 85°C, b) Subsequent heating of the product by steam injection in a steam injector to a temperature in the range of 95°C to 140°C, whereby the amount of liquid supplied by the steam injection in the form of condensate is monitored and / or controlled during the steam injection, c) Subsequently keeping the product hot in a heat holder, d) Subsequent cooling of the product in a flash cooling tank by vacuum degassing to a temperature in the range of 75°C to 85°C, e) Subsequent cooling of the product in a second heat exchanger to an outlet temperature above the melting point of the product. The invention further relates to a corresponding device.

This invention relates to the field of oil and gas well sand control technology, and discloses a high-temperature resistant coated sand. The coated sand has a core-shell structure, with the core being skeleton particles and the outer shell being a glass powder coating. This invention also provides a processing method and application method for the high-temperature resistant coated sand. The high-temperature resistant coated sand of this invention uses inorganic glass powder as the coating material, significantly improving its temperature resistance from the current maximum of 350℃ to 400℃, which can meet the sand control requirements of supercritical steam injection heavy oil thermal recovery wells. Under long-term high temperatures in the formation, its performance remains stable, without aging, and its bonding strength remains excellent for a long time, greatly extending the sand control effectiveness. During surface storage, it will not clump or deteriorate due to heat or moisture, allowing for a longer storage time.

The utility model discloses an air and steam nested injection test device, which comprises an air injection pipe and a steam injection pipe, the steam injection pipe is nested in the air injection pipe, and the input end of the air injection pipe is connected with a centrifugal fan through an air conveying assembly. The input end of the centrifugal fan is connected with a colored smoke generating structure, and the input end of the steam injection pipe is connected with a steam generator through a steam conveying assembly. According to the invention, the steam injection pipe is nested in the air injection pipe to form the nested pipeline, and during the injection test, under the action of the steam generator and the steam conveying assembly, high-temperature steam is injected into the air injection pipe, so that the steam and air are mixed in the nested pipeline, and the steam injection test is completed. And then under the action of the centrifugal fan and the air conveying assembly, the mixed air and high-temperature steam are uniformly accelerated to be jetted into the hearth, so that the effect of enhancing combustion can be achieved, and the penetrating power can be improved.

This invention relates to the field of high-pressure steam injection system for a PTA refining unit. It includes a mixing component and a steam input component. The mixing component includes a jet heater housing, an injector inlet flange at one end of the jet heater housing, and an injector outlet flange at the other end of the jet heater housing. The PTA refining slurry enters the jet heater housing through the injector inlet flange. The steam input component includes a steam feed pipe, a high-pressure steam flange at one end of the steam feed pipe, and a nozzle at the other end of the steam feed pipe. The nozzle has multiple small holes evenly distributed on its surface. The steam feed pipe is inserted into the jet heater housing. This invention improves heat exchange efficiency.

The present invention provides a method for predicting the production capacity of in-situ steam injection mining of oil shale, which belongs to the technical field of oil and gas field development. The method for predicting the production capacity of in-situ steam injection mining of oil shale uses the steam front evolution theory, combined with the basic characteristics of the pyrolysis reaction of kerogen in oil shale, to divide the entire oil shale reservoir during the steam injection in-situ mining process into different areas, establish a mathematical model for the in-situ steam injection mining of oil shale, and use it to predict its production capacity, while reflecting the different development stages of the oil shale reservoir; the production capacity prediction method belongs to the field of oil and gas field development, and can solve the problems of existing production capacity prediction methods such as numerous calculation parameters and poor calculation ability, which greatly increase the difficulty of solving the model and the model is prone to non-convergence, so that the production capacity settlement result cannot be given; at the same time, it can also solve the problems of existing methods such as difficulty in correcting the reaction model according to actual conditions, involving multiple experimental tests and theoretical calculations, and complex actual operations resulting in poor practicality.