203 results about "Steam injection" patented technology

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 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.

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.

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 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.

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.

This application discloses a system and method for removing particulate matter from sulfur recovery tail gas. The system includes a sulfur recovery exhaust gas pipeline with its inlet connected to a sulfur production furnace; a steam pipeline connected to the sulfur recovery exhaust gas pipeline; a steam injection port on the steam pipeline for injecting steam into the sulfur recovery exhaust gas pipeline; a mixing device located downstream of the steam injection port within the sulfur recovery exhaust gas pipeline for mixing the steam with the sulfur recovery tail gas and liquefying the elemental sulfur in the sulfur recovery tail gas; and a desulfurization tower with its inlet connected to the outlet of the sulfur recovery exhaust gas pipeline. The desulfurization tower is equipped with a demister for capturing the liquid elemental sulfur. In this system, before the sulfur recovery tail gas enters the desulfurization tower, the solid elemental sulfur in the gas is liquefied by steam heating. The demister effectively captures the liquefied elemental sulfur, thereby effectively reducing the particulate matter concentration in the final exhaust gas and ensuring compliance with emission standards.

The application discloses an injection-production integrated flow control screen pipe and a pipe column system, and the flow control screen pipe comprises an outer pipe connected with a screen pipe at one end, a joint arranged in the outer pipe, a flow channel arranged on the joint and communicating the inner side and the outer side of the joint, a first opening and closing assembly and a plurality of second opening and closing assemblies arranged on the flow channel; when steam injection is required in the formation, the steam reaches the bottom of the well, the first opening and closing assembly drives and opens the flow channel between the inner side of the joint and the second opening and closing assembly, pushes the second opening and closing assembly to open the flow channel between the first opening and closing assembly and the outer side of the joint, and enters the formation from the screen pipe interlayer under the guidance of the flow channel, so that the pipe column injection and production integration is realized, the demand for steam injection or injection of other media in part oil and gas wells is met, the application range is expanded, and the post-operation is facilitated; when the heavy oil well of thermal recovery is operated, the workover fluid is effectively prevented from entering the formation during the workover operation, the cold damage and other pollution of the workover fluid to the formation are avoided, the applicability is high, and the operation is reliable.

The application relates to a high-efficiency sealing thermal recovery packer, relating to the technical field of oilfield downhole tools. A sealing guarantee assembly, a spacer ring, a rubber sleeve and an unsealing sleeve are sequentially sleeved on a center pipe above a piston, the unsealing sleeve is in threaded connection with the center pipe, the threads for connecting the center pipe with an upper joint and a lower joint are right-handed threads, and the threads for connecting the unsealing sleeve with the center pipe are left-handed threads. The packer has the beneficial effects that the sealing guarantee assembly is arranged, the hollow sleeve is made to have high height growth by using the high-temperature environment of steam injection, the rubber sleeve is further extruded after the packer is set, even if the rubber sleeve layer is partially aged, the high-pressure extrusion can make the inner layer of non-aged rubber seal with the sleeve, and the reliability of the sealing is guaranteed.

The invention discloses a rear wheel steering structure of an oil field movable steam-injection boiler, and belongs to the technical field of steering structures.The rear wheel steering structure of the oil field movable steam-injection boiler comprises a vehicle head and a bearing bridge, the vehicle head is movably connected with the bearing bridge, and meanwhile the bottom of the bearing bridge is rotationally connected with a plurality of hydraulic rods which are symmetrically arranged in a rectangular shape; a stabilizing assembly is rotationally connected to the top of the bearing bridge and used for adjusting the overall gravity center of the transferred boiler and reducing the overturning risk of a vehicle, and a multi-wheel steering assembly is installed at the position, between the hydraulic rods, of the bottom of the bearing bridge and used for actively counteracting the twisting stress of the bearing bridge and the installing plate and protecting the boiler. The stabilizing assembly and the multi-wheel steering assembly are adopted, the problems that large equipment in an oil field is difficult to turn, is afraid of bumping and is prone to sinking are solved, the transfer efficiency of the steam-injection boiler is improved, and the transfer risk is reduced.

The utility model relates to the technical field of corrugated board production equipment, in particular to a steam jet orifice plate with an improved structure, which comprises a main steam module, the main steam module comprises a main steam cavity arranged inside the main steam module, and an upper jet orifice and a front jet orifice are respectively arranged on the upper surface and the front side face of the main steam module. The two sides of the main steam module are each provided with at least one auxiliary steam module, and the upper surfaces and the front side faces of the auxiliary steam modules are provided with upper spraying holes and front spraying holes correspondingly. The device further comprises at least one steam branch pipe and two steam main pipes. Steam of the main steam module is introduced through the steam main pipe, steam of the auxiliary steam module is introduced through the steam branch pipe, parameters such as steam pressure, temperature and speed of the steam main pipe and the steam branch pipe can be controlled through a control system, accurate control over steam injection is achieved, steam waste is reduced, and energy is saved. And steam can be sprayed in along the included angle between the corrugated board and the roller, so that the hot plate is uniformly heated, and the purpose of saving the steam is achieved.

The present application relates to a steam injection valve, comprising a main body with upper and lower ends for connecting with oil pipes, a valve core is seated in the central flow passage of the main body, two sealing structures are arranged between the valve core and the main body, a lateral hole is arranged on the valve core between the two sealing structures, a lateral opening is arranged on the main body between the two sealing structures, the lateral opening is communicated with the lateral hole, a bridge channel extending downward from the upper end is arranged on the main body, the lower end of the bridge channel is communicated with the central flow passage of the main body below the two sealing structures, the valve core is configured to be closed at the upper end and capable of flowing fluid from bottom to top to the lateral hole, and the flow passage area of the valve core can change with the change of the pressure difference of the steam on both sides, so that the amount of steam passing through it remains constant. The steam injection valve of the present application can keep the steam injection amount constant under the condition that the pressure difference of the float changes at both ends, so as to shield the influence of upstream and downstream pressure disturbance on steam flow.

The utility model discloses a die-casting waste gas treatment device, which relates to the technical field of waste gas treatment, and comprises a bottom plate, a die-casting machine fixedly arranged on the upper surface of the bottom plate, a protective cover, a smoke suction structure and a cleaning structure, and the protective cover comprises a fixed cover fixedly arranged on the left side surface of the bottom plate and a sliding groove formed in the upper surface of the bottom plate; the moving cover is slidably mounted on the upper surface of the bottom plate, the material taking opening is formed in the surface of the moving cover, and the shielding assembly is arranged in the moving cover. Compared with the prior art, the range hood has the beneficial effects that the stainless steel filter screen plate is arranged in the exhaust fume collecting hood, large-particle oil fume is adsorbed before the fume enters the fan, the oil fume which is not completely absorbed can be adsorbed on the fan blades, and oil stains on the surfaces of the fan blades are cleaned through timing steam injection by matching with the integrated steam generator and the spray head assembly; the water inlet pipe guarantees continuous water supply, and therefore the situation that a large amount of oil smoke is attached to the fan blades to affect the smoke suction efficiency can be avoided.

This invention discloses a method and apparatus for accelerating the preheating start-up of SAGD in heavy oil reservoirs. The method involves determining the required volume of a high thermal conductivity material dispersion based on the minimum fracture pressure of the target oil layer; injecting hot water into the cleaned steam injection wells and production wells to pressurize to the minimum fracture pressure of the oil layer and maintaining this pressure for a period of time; intermittently injecting the high thermal conductivity material dispersion into the steam injection wells and production wells until all the high thermal conductivity material dispersion is injected; and performing steam injection circulation preheating start-up on the steam injection wells and production wells containing the high thermal conductivity material dispersion. Through this method, this invention achieves significant improvement in the thermal conductivity coefficient of the formation near the wellbore by injecting a high thermal conductivity material into the microfractures formed by the super-fracture pressure without altering the original SAGD injection-production tubing structure, rapidly establishing a uniform oil drainage channel, reducing the start-up time by more than half compared to conventional steam injection preheating start-up methods, significantly reducing energy consumption, accelerating the transition to SAGD production, and increasing the oil production rate.

The utility model discloses a condensate water waste heat recovery system based on a steam jet type heat pump technology, and belongs to the technical field of feed production. The device is arranged in a steam system of a conditioning device on a feed production line, the steam system comprises a steam inlet pipe, and a steam-water separator, a filter I, a pressure gauge, a pressure reducing valve and a flow meter which are sequentially arranged on the steam inlet pipe, and the steam inlet pipe is connected with the conditioning device; the condensate water waste heat recovery system comprises a condensate water inlet pipe, a flash tank and a steam jet type heat pump, one end of the condensate water inlet pipe is connected with the steam-water separator, and the other end of the condensate water inlet pipe is connected with the flash tank; a filter II is arranged on the condensate water inlet pipe; a flash steam outlet in the flash tank is connected with a steam jet type heat pump, and the steam jet type heat pump is arranged on the steam inlet pipe and located between the pressure reducing valve and the flow meter. Flash steam generated by condensate water is recycled, the steam grade is improved, then the flash steam is reused in the tempering device, energy is saved, and it is guaranteed that the environmental protection pressure is reduced.

The utility model provides a multi-fork steam injection premixing type smokeless burner, which relates to the technical field of petrochemical tail gas treatment and comprises a gas inlet pipe, a gas mixing pipe, a distribution pipe and a steam pipe. According to the multi-fork steam injection premixing type smokeless burner, air enters the gas mixing pipe, steam enters the steam injection cover through the branch pipes from the steam pipe, the steam injection cover injects surrounding air to the distribution pipe through the air inlet holes by means of the steam flowing at a high speed, and the multiple exhaust holes are formed in the distribution pipe; through the arrangement of the distribution pipe and the gas mixing pipe, injected air can be evenly sprayed out in all directions of the distribution pipe and is fully mixed with discharged air in the gas mixing pipe, meanwhile, small-aperture exhaust holes are formed in the distribution pipe, the turbulence degree of injected gas is improved, combustion flames are more stable, the discharged air and the air can be continuously mixed and updated through turbulence, and the combustion efficiency is improved. And continuous power is provided for complete combustion of hydrocarbon substances, the combustion efficiency is improved, the steam consumption is reduced, and the formation of black smoke is greatly reduced.

The utility model relates to the field of steam ejectors, and discloses a novel energy-saving steam ejector which comprises a mixing main body, a steam ejection mechanism is arranged in the mixing main body and comprises a steam nozzle, the steam nozzle is arranged in the mixing main body, the left end of the steam nozzle is fixedly connected with a connecting pipe, and the right end of the steam nozzle is fixedly connected with a steam outlet. A fixing block is fixedly connected to the left end of the mixing body, a connecting opening is formed in the outer wall of the end, away from the steam nozzle, of the connecting pipe, the outer wall of the end, away from the steam nozzle, of the connecting pipe is slidably connected to the inner wall of the fixing block, and three channels are formed in the inner wall of the fixing block and communicate with the connecting opening. According to the utility model, the steam injection mechanism is arranged, so that the normal steam injection work can be ensured, the equipment can continuously finish the current work task without stopping the equipment for overall maintenance, the production loss caused by the equipment stopping is reduced, and the overall operation reliability of the equipment is also improved.