HEAT RECOVERY GASIFICATION SYSTEM AND METHOD FOR PARTIAL WASTE HEAT BOILERS
Patent Information
- Application Number
- TR202609268
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2026-08-21
Smart Images
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Abstract
Description
1 TARIFF HEAT RECOVERY GASIFICATION SYSTEM FOR PARTIAL WASTE HEAT BOILER AND METHOD Invention Area 5 The present invention relates to the field of biomass entrained flow gasification technology and a heat recovery gasification system, especially for partial waste heat boilers, and It is related to the method. Background of the Invention Entrained flow gasification of biomass or biochar (non-coal) dust, converting biomass or carbonized biomass into high-quality raw synthetic gas It achieves its industrial goal. Biomass powder, oxygen and steam, a gasification 15 It is fed through a burner to a gasifier, where it is heated under high temperature and pressure. A non-catalytic partial oxidation reaction occurs, and the raw material is at high temperature. Synthesis gas and molten ash slag are produced. 20 entrained flow systems that use pulverized coal as a raw material. In gasification technology, recovering sensible heat from high-temperature gases. To achieve this, a gasification-quenching process is generally used. Gasification- The quenching process involves removing the high-temperature raw material from the gasification chamber of the gasifier. cooling the synthesis gas and molten ash slag with quenching water, and then... This refers to the gasifier entering the water bath in the extinguishing chamber. 1200-1600°C 25 High-temperature crude synthesis gas at a temperature of 200-300°C is cooled to molten ash. The slag, however, is cooled and solidified with quenching water before being added to the water. In this gasification-quenching process, sensible heat is extracted from the high-temperature gas. The efficiency of its recovery is relatively low, the flow rate of the circulating water is high, 30 The fine ash content is high, equipment and pipeline wear is severe, and solid waste and refuse are present. The amount of water discharged is high. In current biomass gasification processes, sensible effects can be detected from the high-temperature gases. There are no efficient solutions for recovering heat. 35 2 Brief Description of the Invention The present invention solves, at least partially, the problems mentioned in the previous art. A heat recovery gasification system and method for a partial waste heat boiler for the purpose of 5 It aims to provide this. To achieve this goal, the present invention works in one direction, a gasification chamber, a radiation chamber. waste heat boiler, a slag pool chamber, a extinguisher and a recycled gas A heat recovery gasification system for a partial waste heat boiler including processing equipment 10 provides; here: The gasification chamber gasifies a mixture of biomass and an oxidant at high temperatures. It is configured to produce crude synthesis gas and liquid molten slag; The radiation waste heat boiler is connected to the gasification chamber, where the heat produced is generated. It takes the high-temperature crude synthesis gas and liquid molten slag, and releases them through a gas outlet and a return line. It is equipped with a converted gas inlet, and high-temperature crude synthesis gas exits through the gas outlet. It sends it to the extinguisher via, and returns via the recycled gas inlet. It takes the crude synthesis gas from the converted gas processing device and the molten slag 20 A molten slag outlet to be connected to the slag pool for transfer to the slag pool. It is equipped with; The slag pool chamber is connected to the radiation waste heat boiler, and the radiation waste heat It takes the molten slag that passes through the cauldron; 25 The extinguisher is connected to the gas outlet of the radiation waste heat boiler and the radiation waste heat It takes the high-temperature crude synthesis gas coming out of the boiler; it puts it in a extinguisher. extinguishing fluid is supplied and the pipeline outlet of high-temperature crude synthesis gas, It is located below the level of the quenching liquid; 30 of the quenched crude synthesis gas. a synthetic gas outlet being discharged, above the extinguishing liquid inside the extinguisher It is found; recycled gas processing equipment, recycled radiation waste heat boiler. It is connected to the gas inlet and a portion of the quenched crude synthesis gas is converted into radiation waste heat 35 3 It is configured to transmit the recycled gas to the boiler's inlet; thus Gasification with quenched crude synthesis gas in a radiation waste heat boiler A mixed gas is formed from the high-temperature crude synthesis gas produced in the chamber, and This reduces the temperature of the raw synthesis gas, which is at a high temperature. In a preferred application mode, the system also includes a extinguisher and a return line. It includes a synthesis gas scrubbing device connected to a converted gas processing device; this device, The extinguished crude synthesis gas is placed in a multilayer tray with a washing liquid. It is configured to wash with; The recycled gas processing device is connected to the synthesis gas scrubbing device, synthesis It takes the crude synthesis gas, which has been washed by the gas scrubbing device, and quenched and A portion of the washed crude synthesis gas is recovered from the radiation waste heat boiler. It transmits the converted gas to the inlet. In a preferred application, the recycled gas processing device uses radiation. raw synthesis gas is fed into the recycled gas inlet of the waste heat boiler pressurize and transfer the pressurized crude synthesis gas to the radiation waste heat boiler. It includes a compressor configured to convey recycled gas to the inlet. In a preferred application, the recycled gas processing device also processes raw materials. It is designed to regulate the temperature of the synthesis gas. In a preferred application, a slag water outlet is located below the extinguisher. This outlet is provided to discharge wastewater that meets the first condition and the second condition 25 It is configured to recycle the incoming wastewater back into the fire extinguisher. In a preferred application method, crude synthesis gas is mixed with fly ash, CO, and H2. It contains one or more HCl, and the first condition is that the HCl concentration exceeds a threshold. It contains the value 30. In a preferred application method, the gasification chamber uses biomass or an oxidant. It includes a top burner configured to inject gas into the gasification chamber. In another direction, the present invention is a heat recovery 35 for a partial waste heat boiler. 4 It provides a gasification method; this method includes the following: a gasification process to produce high-temperature crude synthesis gas and liquid molten slag Gasification of a mixture of biomass and an oxidant through a chamber; liquid molten slag is conveyed through a pipeline beneath a radiation waste heat boiler. Transfer to the slag pool room; high-temperature crude synthesis gas from the radiation waste heat boiler gas outlet Taking it to the fire extinguisher; 10 high-temperature crude synthesis gas, a fire extinguishing liquid inside a fire extinguisher extinguishing and filtering using raw synthesis gas, extinguishing liquid removing it from a pipeline outlet; A portion of the quenched crude synthesis gas is recovered from the radiation waste heat boiler. conveyed to the converted gas inlet, thus in the radiation waste heat boiler, High-temperature crude synthesis gas produced in a gasification chamber with quenched crude synthesis gas. synthesis gas is produced by creating a gas mixture and thus high-temperature raw material. Lowering the temperature of the synthesis gas. 20 In a preferred implementation, the method also extracts crude synthesis gas. Radiation waste heat boiler involves pressurizing the recycled gas inlet. In a preferred application method, the method also involves biomass and an oxidant 25 This involves injecting the mixture into the gasification chamber via a top burner. Compared to previous techniques, the present invention offers at least the following advantages: It has: Low-temperature synthesis gas is recycled and high-temperature crude synthesis is performed. using a partial waste heat boiler heat recovery gasifier in which it is mixed with gas, The temperature at the outlet of the radiation waste heat boiler can be flexibly adjusted and is volatile. Ash viscosity can be reduced, as well as the surface viscosity of gaseous alkali metals. By promoting solidification, ash accumulation in radiation waste heat boilers is effectively reduced. 35 This can be prevented. Also, the use of quenching methods involves high alkali-acid solutions. In convection waste heat boilers, ash accumulation and the resulting chlorine levels are reduced. It completely prevents corrosion, which can significantly increase the stability of the device. Figure Description 5 Figure 1 shows the partial waste heat boiler provided by an arrangement of the present invention. This is a schematic diagram of the structure of a heat recovery gasification system. Figure 2 shows the partial waste heat boiler for 10 provided by an arrangement of the present invention. This is a schematic diagram of the structure of a heat recovery gasification system. Figure 3 shows the partial waste heat boiler provided by an arrangement of the present invention. This is a schematic flowchart of a heat recovery gasification method. Detailed Description of the Invention In order for technical experts to better understand the solutions of the current invention, technical solutions in the arrangements of the present invention, the present invention The drawings in the regulations are clearly and completely presented below in 20 will be explained. As will be clearly seen, the explained regulations cover the present invention. This is only a part of the regulations, not all of them. The current invention based on regulations, a creative effort by experts in the field. All other arrangements obtained without this are within the scope of protection of the existing invention. It must enter. 25 The terms “first” and “second” appear in the description and claims of the present invention and in the attached drawings. and similar terms are used to distinguish similar objects and do not necessarily have a specific meaning. It should be noted that it is not used to define order or priority. Used in this way... the data facilitates understanding of the arrangements of the present invention described herein. 30 to make things easier, they can be used interchangeably where appropriate It should be understood that, in addition, the terms “contains”, “has” and all their variations, It aims to include non-exclusive inclusions. For example, a set of elements. A product or device containing such elements is not necessarily limited to those explicitly listed, but It may also include other elements not explicitly listed or that are specific to the product or device. 35 6 In the present invention, the terms “top”, “bottom”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside”, “outside”, “center”, Terms such as “vertical”, “horizontal”, “transverse” and “longitudinal” refer to the positions shown in the attached diagrams or It refers to location or place relations based on place relations. These terms primarily describe existing It was used to better describe the invention and its arrangements, and 5 the specified devices, elements or components must have a particular orientation or to restrict its construction or operation in a particular orientation It has not been used. In addition, some of the terms above can also indicate a location or place relationship. 10 The word "sequence" can also be used to express other meanings. For example, the term "on" can refer to a specific It can also be used to indicate a dependency or linkage relationship in certain situations. In technology Experts, based on specific conditions, can determine the specific application of these terms in the present invention. They will understand their meanings. Also, the terms “attached”, “installed”, “equipped”, “connected”, “bound” and “sheathed”. This should be interpreted broadly. For example, these are hard links, removable links. connections or integrated structure; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or two devices, It can refer to internal communication between elements or components. Technical expert 20 Individuals may, based on certain conditions, interpret the specific meanings of these terms in the present invention. He / She will understand. Unless there is a contradiction, the regulations and provisions of the existing invention It should be noted that their features can be combined with each other. The present invention is shown in the attached drawings. This will be explained in detail below, along with references and regulations. High heat recovery in entrained flow gasification application technology. There are two types of waste heat recovery processes with varying efficiency: partial waste heat recovery systems and full-efficiency systems. Waste heat boilers. 30 Entrained flow gasification using pulverized coal as a raw material. In application technology, the partial waste heat recovery process involves the gasification of a gasifier. The high-temperature crude synthesis gas and molten ash slag exiting the chamber first This means the gasifier enters the waste boiler compartment. The waste heat boiler's heat is 35. 7 The heat exchange pipe contains coolant water. Heat exchange takes place with the coolant water. After this process, the high-temperature crude synthesis gas cools to 600-650°C and It then enters the water bath in the gasifier's quenching chamber; here it cools down. It continues and is washed, reducing the temperature to 200-300°C; ash and slag also enter the water. Completely. The waste heat boiler process involves the outlet of the gasification chamber of a gasifier being a 5 This means a radiation waste heat boiler and connecting it to a convection waste heat boiler. income is generated; thus, through this two-stage waste heat boiler system, high temperatures are obtained. Complete heat recovery is achieved from the raw synthesis gas. In particular, radiation waste heat is recovered. A cyclone separator is connected between the boiler and the convection waste heat boiler. Thus, high-temperature crude synthesis gas exiting the gasification chamber of the gasifier and 10 Molten solids first enter the radiation waste heat boiler section of the gasifier and Here, heat exchange takes place; the raw slag enters the slag discharge basin of the gasifier. The synthesis gas then enters a cyclone separator for gas-solid separation. The separated synthesis gas... The gas is then subjected to heat exchange in order to achieve the goal of complete heat recovery. Convection waste heat is sent to the boiler. 15 However, in the partial waste heat recovery process, the high-temperature gas is detectable. Heat recovery is still not complete, and the ash slag eventually enters a water system entirely. is discharged; this can lead to clogging, wear, and corrosion in subsequent equipment and pipelines. This could be the reason; in the complete waste heat boiler process, the raw 20 coming out of the radiation waste heat boiler. The temperature of synthesis gas is relatively high; this results in a relatively low viscosity of fly ash. This causes the fly ash to be high; after it enters the convection waste heat boiler... then adheres to the outer wall of the heat exchange tube and the gaseous alkali metal Substances accumulate, which affects the outcome of the heat exchange. The regulations of the present invention apply to biomass or biomass carbon as a raw material. using and low-level energy through entrained flow gasification technology for a partial waste heat boiler that performs the conversion to high-level synthesis gas. It provides a heat recovery gasification system. During the conversion process, The raw material properties of biomass, the high alkali metal content in ash slag, and 30 High chloride content is inevitable in the elemental analysis results. A properly organized flow in gasification and subsequent synthesis gas processing. the process of ensuring the generally safe operation of a gasification device is key. The feasibility of the relevant process configuration depends on the different biomass types. It is determined according to its characteristics. In solutions relating to the regulations of the current invention, the high 35 8 The sensible heat of the gas at this temperature is efficiently recovered, along with radiation waste heat. The temperature of the high-temperature gas at the outlet of the boiler can be flexibly adjusted. The viscosity of fly ash is reduced, and gaseous alkali metal substances are cooled. It is supported. A convection waste heat boiler is not provided, which means industrial production is hampered. It prevents imbalance and the convection of alkali metals and eutectic alkali metals. 5 To prevent sticking and corrosion to the waste heat boiler, it is heated at approximately 600°C. Synthetic gas extinguishing scrubbing + synthetic gas scrubbing process has been adopted. Regulation 1 One arrangement of the present invention is a heat recovery boiler for a partial waste heat boiler. It provides a gasification system. Figure 1 shows a schematic diagram of the system's structure. It shows that, as shown in Figure 1, the system consists of a gasification chamber (10), a radiation waste heat boiler (20), a slag pool room (30), a extinguisher (40) and a Includes recycled gas processing device (50); where: 15 The gasification chamber (10) gasifies a mixture of biomass and an oxidant to produce high It is configured to produce crude synthesis gas and liquid molten slag at high temperatures; Radiation waste heat boiler (20) is connected to the gasification chamber (10), gasification chamber 20 (10) takes the produced high temperature crude synthetic gas and liquid molten slag, a gas It is equipped with an outlet (21) and a recycled gas inlet (22), high temperature raw sends synthetic gas to the extinguisher via gas outlet (21) and recycled gas Raw synthetic from the recycled gas processing device (50) via the inlet (22). It takes the gas and sends the molten slag to the slag pool chamber (30) slag pool 25 It is fitted with a slag outlet to connect to its chamber; The slag pool room (30) is connected to the radiation waste heat boiler (20) and radiation It takes the molten slag that passes through the waste heat boiler; The extinguisher (40) is connected to the gas outlet of the radiation waste heat boiler (20) (21) and It takes high-temperature crude synthesis gas from the radiation waste heat boiler; A extinguishing liquid (41) is provided in the extinguisher and the raw synthesis at high temperature The gas pipeline outlet (42) is located below the level of the extinguishing liquid (41); A synthesis gas outlet from which extinguished crude synthesis gas is discharged (43), extinguisher 35 9 It is located above the extinguishing liquid inside; recycled gas processing device (50), radiation waste heat boiler (20) recycling It is connected to the converted gas inlet (22) and a quenched crude synthesis gas 5 to transmit part of it to the recycled gas inlet of the radiation waste heat boiler (22) It is used; thus, raw synthesis gas is quenched in the radiation waste heat boiler (20). a mixture of high-temperature crude synthesis gas produced in the gasification chamber gas is formed and in this way the temperature of the raw synthesis gas is raised to a high temperature. It is lowered. In a preferred implementation configuration, the system also includes a multi-layered tray. It includes a synthesis gas scrubber. The synthesis gas scrubber connects to the extinguisher and return It is connected to the converted gas processing device and extinguished by the extinguisher. to wash the raw synthetic gas with a washing fluid in a multilayer tray is configured; 15 The recycled gas processing device is connected to the synthesis gas scrubbing device, synthesis It takes the crude synthesis gas, which has been washed by the gas scrubbing device, and quenched and A portion of the washed crude synthesis gas is recovered from the radiation waste heat boiler. It transmits the converted gas to the inlet. 20 In this application method, the crude synthesis gas, which is extinguished by the extinguisher, is first... The synthesis gas enters the scrubbing device to be washed. A portion of the washed raw synthetic gas... Part of the recycled gas enters the processing device, while part exits the system. It is used and goes into subsequent sections of the study. 25 In a preferred application, the recycled gas processing device also, raw synthesis gas outlet to the recycled gas inlet of the radiation waste heat boiler. pressurize and transfer the pressurized raw synthetic gas to the radiation waste heat boiler. It may include a compressor configured to extract recycled gas to the inlet. 30 In a preferred application, the recycled gas processing device also processes raw materials. It can be configured to regulate the temperature of the synthetic gas. In this application model, The temperature of the raw synthetic gas can be flexibly adjusted; for example, at high temperatures. The temperature of the raw synthetic gas can be set to half; this is gasification chamber 35 effectively raises the temperature of the high-temperature crude synthetic gas produced by not only can it lower the temperature, but it can also cause problems that may arise due to extremely low temperatures. It also prevents negative reactions. In a preferred application, a slag water outlet is located under the extinguisher. 5 This outlet is provided to discharge wastewater that meets the first condition and the second condition It is configured to recycle the incoming wastewater back into the fire extinguisher. This application In this way, the first condition and the second condition are the threshold of impurity concentration in wastewater. There may be two threshold values for pollution concentration, one higher and the other lower. It can be adjusted to be lower. 10 higher than the low concentration threshold. The wastewater, after being discharged, is recycled back into the extinguishing system (e.g., fire extinguishing system). (a recycling inlet can be provided onto the liquid), conversely, high Wastewater with a concentration exceeding the threshold is discharged. In a preferred implementation, the system also processes wastewater that meets the first condition 15 a two or more-stage flash evaporation mechanism to process, a wastewater treatment device equipped with a sedimentation tank and a filtration mechanism It may include. In a preferred application method, crude synthesis gas is mixed with fly ash, CO and H2 to form a 20 It contains one or more HCl, and the first condition is that the HCl concentration exceeds a threshold. It includes the value. In other words, the HCl concentration is higher than the threshold value. Wastewater with a certain concentration is discharged into a wastewater treatment device. It will be sent. In a preferred application method, the gasification chamber uses biomass or an oxidant. It includes a top burner (11) configured to inject into the gasification chamber. The top burner and jet feed increase the material mixture inside the gasification chamber, It improves flow distribution within the gasification chamber, simplifies operation, and enhances control. It simplifies things and significantly reduces operating costs. 30 In a preferred arrangement, the slag pool chamber is used to cool the liquid molten slag and It contains cooling water to solidify it. It separates the molten slag in the chamber into solid and liquid states. A slag scooping machine can also be included. 35 11 In this arrangement, low-temperature synthetic gas is recycled and high-temperature. Partial waste heat recovery boiler where raw synthetic gas is mixed with heat recovery gas at a certain temperature. By using a gasifier, the temperature at the outlet of the radiation waste heat boiler is reduced to fly ash. It can be flexibly adjusted to reduce its viscosity; meanwhile, the alkali in gaseous form Ash accumulation in radiation waste heat boilers is reduced by promoting surface solidification of metals. This is effectively prevented. At the same time, the use of extinguishing methods with high alkaline properties... In convection waste heat boilers, acid levels lead to ash accumulation and consequent chlorine buildup. It completely prevents corrosion, which can significantly increase the stability of the device. Regulation 2 10 One arrangement of the present invention provides a preferred heat recovery for a partial waste heat boiler. It provides a gasification system with recovery. Figure 2 shows a schematic of the system's structure. The diagram shows the system as a gasification chamber. As shown in Figure 2, the system consists of a gasification chamber. (10), a radiation waste heat boiler (20), a slag pool chamber (30), a extinguisher (40), 15 a recycled gas processing device (50), a synthesis gas scrubbing device (60) and a It includes a wastewater treatment device (70). For the specific structure of each part, see Figure 1. The information provided can be used. In this arrangement, the gasification chamber (10) holds a mixture of biomass and an oxidant 20 to produce high-temperature crude synthesis gas and liquid molten slag by gasification It is structured. Gasification chamber (10), biomass carbon powder and an oxidant into the gasification chamber It is equipped with a top burner (11) configured to feed the pulverized 25. Biomass carbon powder from the unit is passed to the top of the gasifier using hot inert gas. The oxygen and steam mixture is heavily transported to the burner (11). It is fed into the burner (11) as a material. The burner (11) gasifies the biomass and oxidant. It can use a jet method to transmit to its chamber. Top burner (11) and jet feed, can increase the mixture of materials inside the gasification chamber (10), gasification chamber 30 (10) can improve the flow field distribution, simplify operation and control It can simplify things and significantly reduce operating costs. Biomass carbon powder, oxygen and steam inside the gasification chamber (10) of the gasifier After being mixed homogeneously, it is heated at approximately 1200-1400°C and 4.0 MPaG for 35 minutes. 12 A non-catalytic partial oxidation reaction occurs at high temperatures. Raw synthesis gas and liquid molten slag are produced. Gasification chamber (10), gasification chamber water filled with saturated boiler water to protect its casing from overheating It is equipped with a cooled wall coil. In this arrangement, 1200-1400°C and 4.0 MPaG these are only the preferred reaction parameters and the present invention's reaction 5 It was not given with the intention of limiting the conditions. The radiation waste heat boiler (20) is located below the gasification chamber (10). Its top part of the high temperature crude synthetic gas and liquid produced in the gasification chamber (10) It is connected to the bottom of the gasification chamber (10) to collect the molten slag. Next to this 10 It has a gas outlet (21) and a recycled gas inlet (22) on its wall. High The raw synthesis gas at temperature is sent to the extinguisher via the gas outlet (21) and returned Raw synthesis gas from the converted gas processing device (50) is recycled It is taken through the gas inlet (22); thus, in the radiation waste boiler (20), the quenched raw 15 of the high-temperature crude synthetic gas produced in the gasification chamber with synthesis gas a mixture is formed, and in this way the temperature of the raw synthetic gas is raised to a high temperature. It is lowered. At the bottom of this, it is connected to the slag pool chamber (30) and the molten slag A molten slag outlet is provided to transfer it to the slag pool chamber. At the bottom of the gasification chamber, to the radiation waste heat boiler (20) 20 A narrow pipe channel can be provided for connection. In the radiation waste heat boiler (20) A vertical heat exchange tube is provided. Saturated boiler water flows through the heat exchange tube. Molten slag is provided. It flows down through the radiation waste heat boiler into the slag pool. He enters his room. The slag pool chamber (30) is located below the radiation waste heat boiler. At the top of this part of it is a pipe to collect the molten slag passing through the radiation waste heat boiler. It is connected to the radiation waste heat boiler (20) via. The radiation waste heat boiler An outlet at the base connects to an inlet at the top of the slag pool chamber. Molten slag passes through the radiation waste heat boiler, moves downwards, slag 30 In the pool room (30) it encounters extinguishing water, cools down quickly and solidifies and regularly It is discharged as follows. The temperature of the extinguishing water can be 200°C. In the slag pool chamber. A slag ladle for performing solid-liquid separation on molten slag. The machine can also be included. 35 13 The extinguisher (40) is connected to the gas outlet (21) of the radiation waste heat boiler (20), The radiation takes the high-temperature crude synthesis gas produced by the waste heat boiler. The extinguisher contains a extinguishing liquid (41) and high temperature crude synthesis. The gas pipeline outlet (42) is located below the liquid level of the extinguishing liquid (41). A synthesis gas outlet (43) from which extinguished raw synthesis gas is coming out, 5 inside the extinguisher It is found on top of the extinguishing liquid. Under the extinguisher (40), to remove the wastewater which meets the first condition and the second condition a slag water outlet to recycle the incoming wastewater to the extinguisher (40) can be found. In this regulation, the first condition and the second condition are that the pollution in the wastewater is 10 There may be threshold values for concentration. If one of the pollution concentrations is higher, Two threshold values can be set, one being lower than the other. Low concentration threshold. Waste water that is higher than the value is discharged and then returned to the extinguisher (40). It is converted. The crude synthesis gas, fly ash, HCl, CO, H2 etc. that enter the extinguisher (40) are converted. It may contain. In the cooler, fly ash is washed away simultaneously with HCl and precipitates in the cooler, 15 Thus, lye water is formed. The first and second conditions are the thresholds of the HCl concentration. It may include values. Synthesis gas scrubber (60), cooler (40) and recycled gas processing It is connected to the device (50), and the raw synthesis gas extinguished by the extinguisher is very 20 washing with a washing liquid in a layered tray and quenched and washed raw to introduce some of the synthesis gas into the recycled gas processing device (50) one part is configured; the other part is sent to the next work section as the system's output. It enters, for example, and exits the border area. Recycled gas processing device (50), radiation waste heat boiler (20) and synthesis The gas scrubber (60) is connected to the recycled gas inlet (22). by converted gas processing device (50), synthesis gas scrubbing device (60) It takes the washed crude synthesis gas and converts the obtained crude synthesis gas into radiation waste heat. It transmits the recycled gas to the inlet (22) of the boiler (20). Recycled gas 30 processing device (50), pressurize the crude synthesis gas and pressurized crude synthesized gas into the recycled gas inlet (22) of the radiation waste heat boiler (20) It may include a compressor configured for dispatching. Wastewater treatment device (70) is connected to the extinguisher (40) and waste coming out of the extinguisher (40) 35 14 It is designed to process water. For example, a wastewater treatment device (70) is a two-stage instantaneous with an evaporation mechanism, a sedimentation tank and a filtration mechanism It is equipped. After a two-stage rapid evaporation process, the lye water is used for sedimentation. It is sent to the sedimentation tank and then filtered and separated by plates; then Ultimately, it is discharged from the facility as a byproduct or waste. 5 High temperature crude synthesis gas and molten ash exit from the gasification chamber (10) When radiation enters the waste heat boiler (20), it is usually the radiation waste heat boiler (20) the temperature of the crude synthesis gas and fly ash at the outlet of the lower section is within a suitable range. It must be kept under control. Otherwise, the following effects may occur: high 10 Raw synthesis gas and molten fly ash at a certain temperature are fed into a convection waste heat boiler. when it enters and encounters a heat exchange pipe at a relatively low temperature, fly ash adhering to the outer wall of the heat exchange tube and the result of heat exchange It is likely to have an effect; in a high-temperature environment, gaseous alkali metal When substances come into contact with the heat exchange tube of a convection waste heat boiler, alkaline 15 Metal accumulation and subsequent chloride corrosion can occur, which eventually Convection can damage the heat exchange tube of a waste heat boiler. In the arrangement of the present invention, the recycled gas processing device (50) In this way, the low-temperature washed crude synthesis gas is passed through a compressor for 20 minutes. It is pressurized and then sent to section (20) of the radiation waste heat boiler; Here, high-temperature crude synthesis gas is used to achieve the cooling objective. mixed so that the crude synthesis gas at the outlet of the radiation waste heat boiler (20) This ensures that the temperature is kept within the optimum range, reduces the viscosity of the fly ash, and The adhesion of fly ash to the heat exchange tube of the convection waste heat boiler is reduced. 25 At the same time, radiation waste heat boiler (20) of gaseous alkali metal substances This allows the ash to solidify in the section, thus preventing ash accumulation in the convection waste heat boiler. It is prevented. Furthermore, this arrangement of the present invention allows for 30 materials in the gasification chamber (10). Increasing the mixing, improving the flow field distribution inside the gasification chamber (10), simplifies operation, makes control easy and straightforward, and reduces operating costs. It uses a top burner (11) which reduces the load considerably. Regulation 3 35 The current system is based on the same technical concept as the device regulations mentioned above. One arrangement of the invention is a heat recovery system for a partial waste heat boiler, as shown in Figure 3. It provides a gasification method with recovery; this method includes the following: Step 31: To produce high-temperature crude synthesis gas and liquid molten slag, Gasification of a mixture of biomass and an oxidant by means of a gasification chamber (10); Step 32: A pipeline of liquid molten slag under the radiation waste heat boiler (20) (30) by means of transporting it to a slag pool chamber; 10 Step 33: High temperature crude synthesis gas, in a radiation waste heat boiler (20) removal of gas from the outlet (21) to an extinguisher (40); Step 34: Using a extinguishing liquid (41) in the extinguisher (40) at high temperature 15 quenching and filtering of crude synthesis gas and quenching of crude synthesis gas the removal of the liquid through a pipeline outlet on (41); Step 35: A portion of the quenched crude synthesis gas is transferred to the radiation waste heat boiler. (20) being transferred to the recycled gas inlet (22) so that the radiation waste heat 20 produced in the boiler (20) with quenched crude synthesis gas in the gasification chamber (10) creating a mixture of high-temperature raw synthesis gas and thus high Lowering the temperature of the raw synthesis gas at a certain temperature. In this method, step 35 may also include the following: 25 recycled gas from the radiation waste heat boiler (20) of the raw synthesis gas output pressurization of the inlet (22). The method may also include the following: 30 biomass and oxidant are transferred to the gasification chamber (10) via a top burner (11) to be injected. To facilitate understanding, an example flow process is presented below. 35 16 Biomass carbon powder from the pulverization unit is processed using hot inert gas. It is intensely transported to the top burner (11) of the gasifier. An oxygen-vapor mixture It is fed into the burner (11) as a gasifying agent. After being mixed homogeneously inside the gasification chamber (10) of the gasifier, Biomass carbon powder, oxygen and steam, at approximately 1200-1400°C and 4.0 MPaG. By undergoing a non-catalytic partial oxidation reaction, the raw material at high temperature It produces synthesis gas and liquid molten slag. The gasification chamber (10) contains the gasifier body. A water-cooled 10 filled with saturated boiler water to protect against overheating. It is equipped with a wall spiral. Below the gasification chamber (10), the vertical heat exchange tube is filled with saturated boiler water. There is a filled radiation waste heat boiler (20). Molten slag, radiation waste heat The boiler (20) goes down into the slag pool chamber (30) with extinguishing water 15 It meets; here it cools rapidly, solidifies, and is regularly discharged. Raw synthesis gas and... Fly ash enters the extinguisher (40) for chlorine removal. After exiting the radiation waste heat boiler (20) of the gasifier, the crude synthesis gas, It enters the extinguisher (40) together with the fly ash to remove HCL and fly ash. 20 Then, in the synthesis gas scrubber (60), it comes into direct contact with the process water, It is washed and cooled. Then, some of it is sent to subsequent work sections, while the rest... pressurized by recycled gas compressor (50) and radiation waste The heat produced by the gasification chamber (10) is recycled back to the boiler (20); It mixes with high-temperature raw synthesis gas. This is the radiation waste heat boiler (20) raw 25 It keeps the temperature at the synthesis gas outlet (43) within the preferred range. Ash water washed by the extinguisher (40) is recovered for energy in the wastewater treatment device (70). It undergoes recovery and then is placed in an environment for concentration and reuse. It is sent to the protection device. 30 In the regulations of the present invention, by means of a recycled gas processing device, Low-temperature washed crude synthesis gas is pressurized by a compressor, and then it is sent to the section of the radiation waste heat boiler (20) and at high temperature It is mixed with crude synthesis gas, thus achieving the goal of lowering the temperature; this results in 35 17 Optimum temperature of crude synthesis gas at the outlet of the radiation waste heat boiler (20) It ensures that it is kept within the range, reduces the viscosity of the fly ash, and reduces the fly ash's density. Convection reduces adhesion of the waste heat boiler to the heat exchange tube and the same Radiation waste heat boiler of gaseous alkali metal substances (20) This allows it to solidify in section 5, thus preventing ash accumulation in the convection waste heat boiler. It prevents. In addition, the regulations of the present invention, in the gasification chamber (10) increasing the mixing of materials, the flow field distribution inside the gasification chamber (10) improving, simplifying operation and making control easy and straightforward, and business It uses a top burner (11) which greatly reduces its costs. Finally, the above regulations limit the technical solutions of the existing invention. It should be noted that this is presented solely for illustrative purposes. The individuals are experts in the field. The technical solutions described in the above-mentioned regulations may be modified. or will understand that some of its technical specifications can be replaced with equivalents; Such changes or modifications imply that the essence of the relevant technical solutions is compromised by the existing invention. various regulations cause deviations from the spirit and scope of technical solutions. Impossible. 18 REFERENCE NUMBERS GIVEN IN THE FIGURE Gasification Chamber 11 Hilltop Burner Radiation Waste Heat Boiler 21 Gas Outlets 22 Recycled Gas Input Slag Pool Room 10 40 Fire Extinguishers 41 Extinguishing Liquid 42 Pipeline Outlet of High Temperature Crude Synthesis Gas 43 Synthesis Gas Output 50 Recycled Gas Processing Devices 60 Synthesis Gas Scrubber 70 Wastewater Treatment Devices
Claims
19 REQUESTS 1. It is a heat recovery gasification system for a partial waste heat boiler, Its characteristic feature is a gasification chamber (10), a radiation waste heat boiler (20), a slag pool room (30), a fire extinguisher (40) and a recycled 5 It includes the gas processing device (50), where: The gasification chamber (10) gasifies a mixture of biomass and an oxidant to produce high It is configured to produce crude synthesis gas and liquid molten slag at high temperatures; Radiation waste heat boiler (20) is connected to the gasification chamber (10), gasification high temperature crude synthesis gas and liquid molten produced in chamber (10) It takes the slag, with a gas outlet (21) and a recycled gas inlet (22). It is equipped with high-temperature crude synthesis gas through the gas outlet (21) sends to the extinguisher (40), returns via the recycled gas inlet (22) 15 It takes the crude synthesis gas from the converted gas processing device (50) and To transfer the molten slag to the slag pool room (30) It is fitted with a molten slag outlet for connection; The slag pool room (30) is connected to the radiation waste heat boiler (20) and radiation 20 It takes the molten slag that passes through the waste heat boiler (20); The extinguisher (40) is connected to the gas outlet (21) of the radiation waste heat boiler (20) and high temperature crude synthesis gas from the radiation waste heat boiler (20) receives; a extinguishing liquid (41) is supplied in the extinguisher (40) and high 25 Pipeline outlet of raw synthesis gas at temperature (42), extinguishing liquid (41) It is located below the level; a place where quenched crude synthesis gas is discharged. synthesis gas outlet (43), extinguishing liquid (41) inside the extinguisher (40) It is located on; recycled gas processing device (50), radiation waste heat boiler (20) It is connected to the recycled gas inlet (22) and the quenched crude synthesis a portion of the gas is recycled gas from the radiation waste heat boiler (20) It is configured to transmit to the inlet (22); thus the radiation waste heat boiler (20) 35 produced in the gasification chamber (10) with quenched crude synthesis gas inside A mixed gas is formed from the high-temperature raw synthesis gas, and this In this way, the temperature of the high-temperature raw synthesis gas is lowered.
2. Heat recovery gasification system for a partial waste heat boiler according to Claim 1. and its characteristic feature is also the extinguisher (40) and recycled 5 Raw synthesis connected to the gas processing device (50) and extinguished in the extinguisher (40) to wash the gas in a multilayer tray with a washing fluid It includes a structured synthesis gas scrubbing device (60); Recycled gas processing device (50), synthesis gas scrubbing device (60) 10 connected, crude synthesis gas washed by synthesis gas scrubber (60) It takes and discards some of the quenched and washed crude synthesis gas as radiation waste. It transmits the recycled gas inlet (22) to the boiler (20).
3. Heat recovery gasification for a partial waste heat boiler according to claim 1 or 2 15 It is a system whose characteristic feature is the recycled gas processing device, transmitted to the recycled gas inlet (22) of the radiation waste heat boiler (20) pressurizing the crude synthesis gas and the pressurized crude synthesis gas transmitting radiation waste heat to the recycled gas inlet (22) of the boiler (20). It includes a compressor configured to do so. 20 4. Heat recovery gasification system for a partial waste heat boiler according to claim 3. and its characteristic feature is the recycled gas processing device (50) also configured to regulate the temperature of the raw synthesis gas. that is. 25 5. Heat recovery for a partial waste heat boiler according to any of claims 1 to 4. It is a gasification system with a recovery feature, the defining characteristic of which is a primary condition. discharge of wastewater that meets the first condition and discharge of wastewater that meets the second condition. slag water 30 which is structured to be recycled back to the extinguisher (40) The outlet is provided below the extinguisher (40).
6. Heat recovery gasification system for a partial waste heat boiler according to claim 5. and its characteristic feature is that the crude synthesis gas consists of fly ash, CO and H2 and It must contain one or more HCLs, and the first condition is HCL 35. 21 its concentration includes a threshold value.
7. Heat recovery for a partial waste heat boiler according to any of claims 1 to 6. It is a gasification system with recovery, and its characteristic feature is gasification. injecting biomass or oxidant into the gasification chamber (10) 5 It includes a top burner (11) configured to be used.
8. Heat recovery for a partial waste heat boiler according to any of claims 1 to 7. A heat recovery system for a partial waste heat boiler using a gasification system. It is a gasification method with recovery, and its characteristic features are as follows: 10 It includes: to produce high-temperature crude synthesis gas and liquid molten slag a mixture of biomass and an oxidant through a gasification chamber (10) gasification; 15 liquid molten slag in a pipeline under the radiation waste heat boiler (20) by means of transporting it to the slag pool room (30); high temperature crude synthesis gas, radiation waste heat boiler (20) gas 20 to be removed to the extinguisher (40) via the outlet (21); high temperature crude synthesis gas, a extinguishing in the extinguisher (40) quenching and filtering of the raw synthesis gas using liquid (41), removal of extinguishing liquid (41) via a pipeline outlet; 25 a portion of the quenched crude synthesis gas is placed in the radiation waste heat boiler (20) transmitting the recycled gas to the inlet (22) so that the radiation waste heat in the boiler (20), with quenched crude synthesis gas in the gasification chamber (10) The high-temperature crude synthesis gas produced forms a gas mixture. 30 And in this way, the temperature of the high-temperature raw synthesis gas is reduced.
9. A heat recovery gasification system for a partial waste heat boiler according to claim 8. It is a method, and its characteristic feature is that it includes the following: 35 recycled radiation waste heat boiler (20) of crude synthesis gas output 22 pressurization of the gas inlet (22).
10. A heat recovery gasification for a partial waste heat boiler according to claim 8 or 9. It is a method, and its characteristic feature is that it includes the following: biomass and oxidant are transferred to the gasification chamber via a top burner (10) to be injected.