Multi-element thermal fluid generation system and method for high-salt-content material

Abstract

According to the multi-element thermal fluid generation system and method for the high-salt-content materials, an inorganic salt online removing mechanism and an inorganic salt online discharging mechanism are arranged in an inorganic salt online removing chamber, and the inorganic salt online removing mechanism is located in a cavity of the inorganic salt online removing chamber; inorganic salt on the inner wall of the chamber cavity can be continuously removed through the inorganic salt online discharging mechanism, the inorganic salt is conveyed to the outlet, the inorganic salt online discharging mechanism at the outlet can discharge the inorganic salt, the two mechanisms are matched to provide a low-pressure condition for online discharging of the inorganic salt and fluid, the discharging efficiency of the inorganic salt is improved, and the working efficiency is improved. The problem of corrosion failure caused by inorganic salt and the problem of equipment blockage possibly induced by salt crystallization precipitation are avoided, the device can treat organic matters with high salt content, the functions of on-line removal, pressure reduction, discharge and the like of the inorganic salt are effectively realized, and the continuous production requirements of actual engineering are met.

Description

Technical Field

[0001] This invention belongs to the field of green and efficient extraction technology of fossil energy, and relates to a multi-element thermal fluid generation system and method for high-salt materials. Background Technology

[0002] With the development of global crude oil resources, the reserves of easily exploitable conventional crude oil are gradually being depleted, and heavy oil, which is more difficult to exploit, has become the focus of oil resource development. China has abundant heavy oil resources, which account for about 20% of the total onshore crude oil [5]. The Bohai Oilfield alone has 2.22 billion tons of heavy oil, accounting for 56% of the total proven geological reserves of oil in the Bohai Oilfield. However, the development level of China's heavy oil resources is still at a low level, and the development rate of heavy oil resources in the Bohai Bay is less than 1%. The efficient exploitation of heavy oil resources is of vital importance to maintaining national security and the sustainable development of the social economy.

[0003] Supercritical hydrothermal combustion-type multi-component thermofluid generation technology is based on supercritical hydrothermal combustion technology. It utilizes supercritical water (T≥374.15℃ and P≥22.12MPa) to simultaneously dissolve organic matter and oxidants, resulting in a hydrothermal combustion reaction. The combustion generates a multi-component thermofluid that achieves efficient and increased production of heavy oil through the synergistic effects of multiple mechanisms, including thermal viscosity reduction and gas dissolution viscosity reduction.

[0004] However, the reactants used are generally high-salt organic wastes. Corrosion failure caused by inorganic salts and equipment blockage caused by salt crystallization seriously affect the safety of the equipment operation. In addition, fluctuations in flow rate, pressure and temperature during system operation will also affect the normal operation of the system. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of corrosion failure caused by inorganic salts and equipment blockage caused by salt crystallization in the prior art, which seriously affect the safety of the device operation. The invention provides a multi-element thermal fluid generation system and method for high-salt materials, which can process high-salt organic matter, effectively realize the functions of online removal, depressurization and discharge of inorganic salts, meet the needs of continuous production in actual engineering, and has the advantages of high system safety.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] A multi-element thermal fluid generation system for high-salt materials includes a high-salt material module. The output of the high-salt material module is divided into two paths. The first path is connected to the input of a supercritical hydrothermal combustion reaction module, and the second path is mixed with organic materials and then enters the supercritical hydrothermal combustion reaction module. The output of the supercritical hydrothermal combustion reaction module is connected to the wellhead to be injected with steam.

[0008] The supercritical hydrothermal combustion reaction module includes a supercritical hydrothermal combustion chamber and an inorganic salt online removal chamber connected in sequence. The inorganic salt online removal chamber is equipped with an inorganic salt online removal mechanism and an inorganic salt online discharge mechanism. The inorganic salt online removal mechanism is located inside the cavity of the inorganic salt online removal chamber, and the inorganic salt online discharge mechanism is located at the inorganic salt discharge outlet of the inorganic salt online removal chamber. The inorganic salt discharge outlet is connected to a gas-solid separation module.

[0009] It also includes a freshwater module, the output of which is connected in sequence to the input of the supercritical hydrothermal combustion reaction module and the high-salt material module, and the output of the high-salt material module is connected to the input of the freshwater module.

[0010] A further improvement of the present invention is that:

[0011] The inorganic salt online removal mechanism includes a drive shaft, on which a scraper or brush is mounted, and the drive shaft can drive the scraper or brush to rotate circumferentially.

[0012] The inorganic salt online discharge mechanism includes several helical blades, which are circumferentially distributed on a drive shaft, and the drive shaft can drive the helical blades to rotate circumferentially.

[0013] The scraper or brush is located above several spiral blades.

[0014] The high-salt material module includes an inorganic salt primary removal tank and a wastewater preheater connected in sequence, and a high-salt material high-pressure pump is installed between the inorganic salt primary removal tank and the wastewater preheater.

[0015] The inorganic salt online removal chamber has a combustion product outlet, which is sequentially connected to a reactant preheater and a supercritical hydrothermal combustion device wall cooling assembly. The supercritical hydrothermal combustion device wall cooling assembly is connected to the wellhead to be injected with steam.

[0016] The output of the high-salt material module is divided into two paths. The first path connects to the input of the supercritical hydrothermal combustion reaction module, and the second path, after mixing with the organic material, enters the supercritical hydrothermal combustion reaction module, including:

[0017] The first output of the high-salt material mold enters the supercritical hydrothermal combustion reaction module and then splits into two paths: one path connects to the supercritical hydrothermal combustion chamber, and the other path connects to the inorganic salt online removal chamber.

[0018] The second output of the high-salt material mold is mixed with the organic material and then enters the reaction material preheater.

[0019] The second output of the high-salt material mold, after being mixed with organic materials, enters the reactant preheater, including:

[0020] It also includes a fuel delivery pipeline, on which a high-pressure fuel pump is installed. The fuel in the fuel delivery pipeline is mixed with the high-salt material output from the high-salt material mold to form a reaction material. The reaction material enters the supercritical hydrothermal combustion chamber after passing through a reaction material preheater.

[0021] The freshwater module includes a freshwater storage tank. The outlet of the freshwater storage tank is sequentially connected to the wall cooling assembly of the supercritical hydrothermal combustion device, the inorganic salt primary removal tank, and the wastewater preheater. The outlet of the wastewater preheater is connected to the inlet of the freshwater storage tank.

[0022] The outlet of the freshwater storage tank is connected to a freshwater high-pressure pump;

[0023] A pressure reducing valve is connected to the inlet of the freshwater storage tank.

[0024] A method for generating a multi-element thermal fluid for high-salt materials includes the following steps:

[0025] After being processed by the high-salt material module, the high-salt material is divided into two paths. One path is transported to the supercritical hydrothermal combustion reaction module, and the other path is mixed with organic materials to form reactant material. The reactant material flows to the supercritical hydrothermal combustion reaction module to carry out the supercritical hydrothermal combustion reaction.

[0026] It also includes a freshwater module, in which the freshwater is processed sequentially by a supercritical hydrothermal combustion reaction module and a high-salt material module before returning to the freshwater module;

[0027] When the supercritical hydrothermal combustion reaction module processes high-salt materials, the generated gas enters the wellhead to be injected with steam. The generated inorganic salts and fluids are processed by the online inorganic salt removal mechanism and the online inorganic salt discharge mechanism before entering the gas-solid separation module. The separation module undergoes flash evaporation to achieve gas-solid separation.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention discloses a multi-element thermal fluid generation system for high-salt materials. It incorporates an online inorganic salt removal mechanism and an online inorganic salt discharge mechanism. The online inorganic salt removal mechanism is located inside the cavity of the online inorganic salt removal chamber. The online inorganic salt discharge mechanism removes inorganic salt from the inner wall of the chamber via a continuous removal line, transporting the inorganic salt to the outlet. The online inorganic salt discharge mechanism at the outlet discharges the inorganic salt. The two mechanisms work together to provide low-pressure conditions for the online discharge of inorganic salt and fluid, improving the discharge efficiency and avoiding corrosion failure caused by inorganic salts and equipment blockage problems that may be induced by salt crystallization. This device can handle high-salt organic matter, effectively achieving online inorganic salt removal, pressure reduction, and discharge functions, meeting the needs of continuous production in practical engineering.

[0030] Furthermore, in this invention, the online inorganic salt removal mechanism uses a scraper or brush, and there are gaps between the scraper or brush and several spiral blades. The inorganic salt fills the gaps. The online inorganic salt removal mechanism and the online inorganic salt discharge mechanism cooperate with the online removal chamber to form micron-level micro gaps. The more inorganic salt there is, the smaller the gaps become. When fluid flows through the micro gaps, a significant pressure drop will occur, thereby meeting the low-pressure conditions for the online discharge of inorganic salt and fluid, ultimately resulting in the discharge of inorganic salt. Attached Figure Description

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a system structure diagram of the present invention;

[0033] Figure 2 This is a schematic diagram showing the cooperation between the online inorganic salt removal mechanism and the online inorganic salt discharge mechanism of the present invention.

[0034] in:

[0035] 1-Chemical reagent injection pipeline; 2-Inorganic salt primary removal tank; 3-Fresh water storage tank; 4-Wastewater preheater; 5-Supercritical hydrothermal combustion chamber; 6-Inorganic salt online removal chamber; 7-Reactant preheater; 8-Supercritical hydrothermal combustion device wall cooling assembly; 9-Gas-solid separation module; 10-Inorganic salt outlet; 11-Combustion product outlet; 12-Ignition device; 13a-Inorganic salt online removal mechanism; 13b-Inorganic salt online discharge mechanism; P1-High-pressure pump for high-salt materials; P2-Fuel high-pressure pump; P3-Fresh water high-pressure pump; P4-Oxidant high-pressure pump; V1-First heat exchange medium bypass valve; V2-Second heat exchange medium bypass valve; V4-Combustion chamber mixing water regulating valve; V5-Inorganic salt discharge valve; V6-Gas phase product discharge valve; V7-Pressure reducing valve; A-Supercritical hydrothermal combustion reaction module. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0042] The present invention will now be described in further detail with reference to the accompanying drawings:

[0043] See Figure 1This invention discloses a multi-element thermal fluid generation system for high-salt materials, comprising a reactant module, a high-salt material module, a freshwater module, an oxidant supply system, a safety venting module, and a supercritical hydrothermal combustion reaction module A. The supercritical hydrothermal combustion reaction module internally includes a supercritical hydrothermal combustion chamber and an online inorganic salt removal chamber. The outlet of the supercritical hydrothermal combustion chamber is connected to the online inorganic salt removal chamber, which contains an online inorganic salt removal mechanism and an online inorganic salt discharge mechanism. This invention is applicable to high-salt organic waste, effectively avoiding problems such as inorganic salt deposition on the wall surface and blockage of flow channels. It achieves online removal, pressure reduction, and discharge of inorganic salts, meeting the needs of continuous production in practical engineering. It also features a compact reactor structure, multiple pathways for utilizing the exothermic reaction, and high system safety.

[0044] Specifically include:

[0045] This embodiment discloses a multi-element thermal fluid generation system for high-salt materials, including a high-salt material module. The output of the high-salt material module is divided into two paths: the first path is connected to the input of a supercritical hydrothermal combustion reaction module, and the second path, after mixing with organic materials, enters the supercritical hydrothermal combustion reaction module. The output of the supercritical hydrothermal combustion reaction module is connected to the wellhead to be injected with steam. The supercritical hydrothermal combustion reaction module includes a supercritical hydrothermal combustion chamber 5 and an inorganic salt online removal chamber 6 connected in sequence. The inorganic salt online removal chamber 6 is equipped with an inorganic salt online removal mechanism 13a and an inorganic salt online discharge mechanism 13b. The inorganic salt online removal mechanism 13a is located inside the cavity of the inorganic salt online removal chamber 6, and the inorganic salt online discharge mechanism 13b is located at the inorganic salt outlet of the inorganic salt online removal chamber 6. The inorganic salt outlet 10 is connected to a gas-solid separation module 9. It also includes a freshwater module, which is connected in sequence to the input terminals of the supercritical hydrothermal combustion reaction module and the high-salt material module, and the high-salt material module is connected to the freshwater module.

[0046] Specifically, in this embodiment, the supercritical hydrothermal combustion reaction module has the following structure:

[0047] It includes a supercritical hydrothermal combustion chamber 5 and an inorganic salt online removal chamber 6 connected in sequence. An ignition device 12 is connected to the inlet of the supercritical hydrothermal combustion chamber 5. A combustion product outlet 11 is provided on the inorganic salt online removal chamber 6. The combustion product outlet 11 is connected in sequence to a reactant preheater 7 and a supercritical hydrothermal combustion device wall cooling assembly 8.

[0048] Furthermore, in this embodiment, the inorganic salt online removal mechanism 13a and the inorganic salt online discharge mechanism 13b are coaxially arranged. A drive shaft is provided inside the inorganic salt online removal chamber 6, and a scraper or brush is provided on the drive shaft. The drive shaft can drive the scraper or brush to rotate circumferentially. The inorganic salt online discharge mechanism 13b includes a plurality of spiral blades, which are circumferentially distributed on the drive shaft. The drive shaft can drive the plurality of spiral blades to rotate circumferentially, and the scraper or brush is located above the plurality of spiral blades. Inorganic salt online... The removal mechanism 13a continuously removes inorganic salt deposits on the wall of the online inorganic salt removal chamber 6 and transports them to the online inorganic salt discharge mechanism 13b. A gap is formed between the online inorganic salt removal mechanism 13a and the online inorganic salt discharge mechanism 13b, which cooperates with the online removal chamber 6 to form a micron-level micro-gap. The more inorganic salt there is, the smaller the gap becomes. When the fluid flows through the micro-gap, a significant pressure drop, such as 18-25 MPa, will occur, thereby meeting the low-pressure conditions for the online discharge of inorganic salt and fluid, and finally being discharged from the inorganic salt discharge outlet 10.

[0049] Furthermore, in this embodiment, the inorganic salt online discharge mechanism 13b operates in two modes: forward rotation and reverse rotation. When rotating forward, the inorganic salt and fluid move downward, achieving online pressure reduction and discharge. When rotating in reverse, the nearby inorganic salt and fluid move upward, and it also has the function of maintaining the pressure inside the reactor.

[0050] In this embodiment, the structure of the high-salt material module includes:

[0051] In the inorganic salt primary removal tank 2, the chemical reagent is injected through a chemical reagent injection pipeline. The salt and high-salt materials are mixed and then flow into the inorganic salt primary removal tank 2 for preliminary desalination and Ca removal. 2+ Mg 2+ Inorganic salts and high-salt materials flow through the high-salt material high-pressure pump P1 and are pressurized to supercritical pressure. The high-pressure high-salt material then flows through the wastewater preheater 4 and is heated to the set temperature before being divided into three streams:

[0052] The first stream flows through the reactant mixing valve V3 and mixes with organic matter to form reactants;

[0053] The second path is equipped with a combustion chamber mixing water regulating valve V4, which is connected to the supercritical hydrothermal combustion chamber 5.

[0054] The third path connects to the online inorganic salt removal chamber 6.

[0055] Furthermore, in this embodiment, the combustion chamber mixing water regulating valve V4 regulates the inflow rate of high-salt material into the supercritical hydrothermal combustion chamber 5, thereby maintaining the temperature inside the supercritical hydrothermal combustion chamber 5 at the inorganic salt melting temperature, such as 800-900°C, thus preventing inorganic salt from depositing on the wall surface and allowing the inorganic salt to flow into the inorganic salt online removal chamber 6. The temperature inside the inorganic salt online removal chamber 6 is maintained at the inorganic salt crystallization temperature, such as 400-500°C, causing the inorganic salt to deposit in a solid state onto the inorganic salt online discharge mechanism 13b and be discharged.

[0056] Furthermore, in this embodiment, a fuel delivery pipeline is also included. A high-pressure fuel pump P2 is installed on the fuel delivery pipeline. The fuel in the fuel pipeline is pressurized to supercritical pressure by the high-pressure fuel pump P2 and then mixed with the high-salt material heated by the wastewater preheater 4 to form a reaction material. The reaction material flows through the reaction material preheater 7 and the ignition device 12 in sequence and is processed to reach the reaction temperature. Then, supercritical hydrothermal combustion occurs in the supercritical hydrothermal combustion chamber 5.

[0057] Furthermore, in this embodiment, the ignition device 12 can use an electric heating rod as the ignition element, which is located inside the supercritical hydrothermal combustion chamber 5. During ignition, high-salt materials with subcritical temperatures such as 200-300°C flowing over the hot surface of the electric heating rod are only ignited, thereby preventing inorganic salts from precipitating in narrow areas such as pipes.

[0058] Furthermore, in this embodiment, the oxidant is connected to the oxidant high-pressure pump P4, which pressurizes the oxidant to a set pressure and then flows into the supercritical hydrothermal combustion chamber 5 to participate in the supercritical hydrothermal combustion reaction.

[0059] In this embodiment, the freshwater module includes the following structure:

[0060] The freshwater module includes a freshwater storage tank 3. The outlet of the freshwater storage tank 3 is connected to a freshwater high-pressure pump P3, which pressurizes the freshwater to a set pressure. As needed, the freshwater flows through the wall cooling component 8 of the supercritical hydrothermal combustion device and is heated to a set temperature. Then, it flows sequentially through the wastewater preheater 4 and the inorganic salt primary removal tank 2. After passing through the pressure reducing valve V7, the pressure is reduced and it returns to the freshwater storage tank 3. During the flow of freshwater, a first heat exchange medium bypass valve V1 is installed on the inorganic salt primary removal tank 2 to regulate the flow rate of freshwater through the inorganic salt primary removal tank 2.

[0061] Furthermore, in this embodiment, the first heat exchange medium bypass valve V1 regulates the flow rate of the heat exchange medium to maintain the temperature inside the inorganic salt initial removal tank 2 at Ca... 2+ Mg 2+ The inorganic salt removal temperature is 70-100℃; the second heat exchange medium bypass valve V2 regulates the heat exchange medium flow rate to maintain the outlet fluid temperature of the wastewater preheater 4 at Na... + K +Below the temperature at which inorganic salts precipitate, such as 200–300℃.

[0062] Furthermore, in this embodiment, an inorganic salt discharge valve V5 is installed on the inlet pipe of the gas-solid separation module 9; a gas phase product discharge valve V6 is installed on the exhaust pipe. After pressurized inorganic salt and fluid enter the gas-solid separation module 9, flash evaporation occurs, and the solid inorganic salt and gas are separated and discharged to the outside through the inorganic salt discharge valve V5 and the gas phase product discharge valve V6, respectively.

[0063] The generating system disclosed in this invention is suitable for high-salt materials and effectively avoids inorganic salt deposition on the wall: the system can directly use high-salt organic waste as fuel, first removes inorganic salts with low solubility in the wastewater, and then uses the dissolution and melting characteristics of inorganic salts at different temperatures to regulate the phase state of inorganic salts in different chambers, effectively avoiding problems such as inorganic salt deposition on the wall in high-temperature combustion chambers and delays.

[0064] Furthermore, the generation system disclosed in this invention achieves online continuous pressure reduction and desalination, meeting the needs of continuous production: the online salt discharge and pressure reduction device of this invention rationally utilizes the tiny gaps formed by the inorganic salt, the online salt discharge and pressure reduction device, and the reaction device to generate a significant pressure drop in the flowing fluid, thereby meeting the conditions for online discharge of inorganic salt and overcoming the technical bottleneck of shutdown-based salt discharge. Online salt discharge better meets the actual needs of continuous production and is conducive to the promotion of supercritical hydrothermal combustion technology.

[0065] Furthermore, the salt discharge system disclosed in this invention effectively avoids the problem of clogging in the salt discharge pipeline. In conventional salt discharge technology, technicians use valves to reduce fluid pressure. However, high-salt-content fluids often clog the flow channels within the valves. This invention eliminates the easily clogged valves and utilizes the tiny gaps formed by inorganic salts, the linear salt discharge pressure reduction device, and the reaction device itself to achieve pressure reduction. The more inorganic salts present and the smaller the gap size, the stronger the pressure reduction effect.

[0066] Furthermore, the present invention discloses a reaction system that regulates the temperature of key walls and efficiently utilizes the exothermic reaction: a wall cooler is installed inside the reactor to keep the walls at a subcritical temperature, significantly reducing the thickness of the pressure-bearing walls and lowering the grade of the wall material; a fuel preheater is installed inside the system to preheat the fuel using the exothermic reaction, thereby achieving a self-sustaining reaction.

[0067] This invention also discloses a method for generating a multi-element thermal fluid for high-salt materials, comprising the following steps:

[0068] Inorganic chemical reagents are mixed with the high-salt material through chemical reagent injection pipe 1, and then flow into the inorganic salt primary removal tank 2 for preliminary desalination. After desalination, the high-salt material flows through the high-pressure pump P1 to be pressurized to supercritical pressure and then enters the wastewater preheater for heating. The heated high-salt material is then divided into three streams:

[0069] The first high-salt material flows through the reactant mixing valve V3 and mixes with organic matter to form reactant material. The reactant material flows through the reactant preheater 7 and ignition device 12 in sequence and is processed to reach the reaction temperature. Then it enters the supercritical hydrothermal combustion chamber 5 to undergo supercritical hydrothermal combustion.

[0070] The second high-salt material flows through the combustion chamber mixing water regulating valve V4 and then enters the supercritical hydrothermal combustion chamber 5.

[0071] The third high-salt material enters the inorganic salt online removal chamber 6;

[0072] The inorganic salts produced after combustion in the supercritical hydrothermal combustion chamber 5 flow into the inorganic salt online removal chamber 6. The temperature in the inorganic salt online removal chamber 6 is maintained at the inorganic salt crystallization temperature, such as 400-500℃, so that the inorganic salts are deposited in solid state to the inorganic salt online discharge mechanism 13b and discharged.

[0073] Combustion products generated in the inorganic salt online removal chamber 6 enter the reactant preheater 7 and the supercritical hydrothermal combustion device wall cooling assembly 8 sequentially after passing through the combustion product discharge outlet 11. Finally, the generated gas enters the steam injection wellhead. The inorganic salt discharged from the inorganic salt online removal chamber 6 and the fluid enter the gas-solid separation module 9 and undergo flash evaporation. The solid inorganic salt and gas are separated and discharged to the outside through the inorganic salt discharge valve V5 and the gas phase product discharge valve V6, respectively.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-element thermal fluid generation system for high-salt materials, characterized in that, It includes a high-salt material module, the output of which is divided into two paths. The first path is connected to the input of the supercritical hydrothermal combustion reaction module, and the second path is mixed with organic materials and then enters the supercritical hydrothermal combustion reaction module. The output of the supercritical hydrothermal combustion reaction module is connected to the wellhead to be injected with steam. The supercritical hydrothermal combustion reaction module includes a supercritical hydrothermal combustion chamber (5) and an inorganic salt online removal chamber (6) connected in sequence. The inorganic salt online removal chamber (6) is provided with an inorganic salt online removal mechanism (13a) and an inorganic salt online discharge mechanism (13b). The inorganic salt online removal mechanism (13a) is located inside the cavity of the inorganic salt online removal chamber (6), and the inorganic salt online discharge mechanism (13b) is located at the inorganic salt outlet of the inorganic salt online removal chamber (6). The inorganic salt outlet (10) is connected to the gas-solid separation module (9). It also includes a freshwater module, the output of which is connected in sequence to the input of the supercritical hydrothermal combustion reaction module and the high-salt material module, and the output of the high-salt material module is connected to the input of the freshwater module.

2. The multi-element thermal fluid generation system for high-salt materials according to claim 1, characterized in that, The inorganic salt online removal mechanism (13a) includes a drive shaft, on which a scraper or brush is provided, and the drive shaft can drive the scraper or brush to rotate circumferentially.

3. A multi-element thermal fluid generation system for high-salt materials according to claim 2, characterized in that, The inorganic salt online discharge mechanism (13b) includes a plurality of helical blades, which are circumferentially distributed on a drive shaft, and the drive shaft can drive the plurality of helical blades to rotate circumferentially. The scraper or brush is located above several spiral blades.

4. A multi-element thermal fluid generation system for high-salt materials according to claim 1, characterized in that, The high-salt material module includes an inorganic salt primary removal tank (2) and a wastewater preheater (4) connected in sequence, and a high-salt material high-pressure pump (P1) is installed between the inorganic salt primary removal tank (2) and the wastewater preheater (4).

5. A multi-element thermal fluid generation system for high-salt materials according to claim 4, characterized in that, The inorganic salt online removal chamber (6) has a combustion product outlet (11) which is connected in sequence to the reactant preheater (7) and the supercritical hydrothermal combustion device wall cooling assembly (8). The supercritical hydrothermal combustion device wall cooling assembly (8) is connected to the wellhead to be injected with steam.

6. A multi-element thermal fluid generation system for high-salt materials according to claim 5, characterized in that, The output of the high-salt material module is divided into two paths. The first path connects to the input of the supercritical hydrothermal combustion reaction module, and the second path, after mixing with the organic material, enters the supercritical hydrothermal combustion reaction module, including: The first output of the high-salt material module enters the supercritical hydrothermal combustion reaction module and then splits into two paths: one path connects to the supercritical hydrothermal combustion chamber (5), and the other path connects to the inorganic salt online removal chamber (6). The second output of the high-salt material mold is mixed with the organic material and then enters the reaction material preheater (7).

7. A multi-element thermal fluid generation system for high-salt materials according to claim 6, characterized in that, The second output of the high-salt material mold, after being mixed with the organic material, enters the reactant preheater (7), including: It also includes a fuel delivery pipeline, on which a high-pressure fuel pump (P2) is installed. The fuel in the fuel delivery pipeline is mixed with the high-salt material output from the high-salt material mold to form a reaction material. The reaction material enters the supercritical hydrothermal combustion chamber (5) after passing through the reaction material preheater (7).

8. A multi-element thermal fluid generation system for high-salt materials according to claim 5, characterized in that, The freshwater module includes a freshwater storage tank (3), the outlet of which is sequentially connected to a supercritical hydrothermal combustion device wall cooling assembly (8), an inorganic salt primary removal tank (2), and a wastewater preheater (4), the outlet of which is connected to the inlet of the freshwater storage tank (3).

9. A multi-element thermal fluid generation system for high-salt materials according to claim 5, characterized in that, The outlet of the freshwater storage tank (3) is connected to a freshwater high-pressure pump (P3); The inlet of the freshwater storage tank (3) is connected to a pressure reducing valve (V7).

10. A method for generating a multi-element thermal fluid for high-salt materials, characterized in that, Includes the following steps: After being processed by the high-salt material module, the high-salt material is divided into two paths. One path is transported to the supercritical hydrothermal combustion reaction module, and the other path is mixed with organic materials to form reactant material. The reactant material flows to the supercritical hydrothermal combustion reaction module to carry out the supercritical hydrothermal combustion reaction. It also includes a freshwater module, in which the freshwater is processed sequentially by a supercritical hydrothermal combustion reaction module and a high-salt material module before returning to the freshwater module; When the supercritical hydrothermal combustion reaction module processes high-salt materials, the generated gas enters the wellhead to be injected with steam. The generated inorganic salts and fluids are processed by the inorganic salt online removal mechanism (13a) and the inorganic salt online discharge mechanism (13b) and then enter the gas-solid separation module (9). The gas-solid separation is achieved by flash evaporation in the separation module (9).

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