A high-efficiency and energy-saving high-temperature incineration system for treating sulfur-containing silane organic waste gas.

By integrating the π-type high-temperature incinerator with flue gas post-treatment technology, the problems of high energy consumption and high risk of dioxin formation in the treatment of sulfur-containing silane organic waste gas have been solved, achieving efficient and energy-saving waste gas treatment and waste heat recovery, thus improving environmental performance.

CN121025477BActive Publication Date: 2026-04-03江西宏柏新材料股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-30
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing technologies for treating sulfur-containing silane organic waste gas have problems such as high energy consumption, easy equipment damage, secondary pollution, and high risk of dioxin generation. In addition, traditional incinerators are inefficient, and adsorption and plasma treatment methods are not very efficient.

Method used

The system employs a π-type high-temperature incinerator combined with integrated flue gas post-treatment technology, featuring multi-layer combustion devices and gradient pyrolysis technology. It utilizes propylene waste gas as auxiliary fuel and introduces a multi-stage waste heat recovery device to form a natural circulation loop, ensuring complete combustion of waste gas and recovery of waste heat, thereby reducing energy consumption and improving treatment efficiency.

Benefits of technology

It achieves efficient and energy-saving waste gas treatment, reduces the risk of dioxin formation, and achieves excellent environmental performance. Furthermore, it reduces environmental treatment costs by recovering waste heat and generating steam.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas, comprising a π-type high-temperature incinerator, a blower, an organic waste gas buffer tank, a propylene waste gas buffer tank, a dust bin, a soft water tank, an inlet pump, a preheater, a quench tower, a dust collector, a primary absorption tower, a secondary absorption tower, and a flue. This invention employs a novel π-type high-temperature incinerator, combined with integrated flue gas post-treatment technology, effectively improving the efficiency and thoroughness of waste gas treatment. Through integrated design, the equipment footprint is reduced, improving the overall system's compactness and operational efficiency. Simultaneously, a multi-stage waste heat recovery device is introduced, enabling efficient recovery of waste heat during the incineration process for co-production of steam, achieving energy recycling. This design not only reduces energy consumption but also improves the system's economic and environmental performance.
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Description

Technical Field

[0001] This invention relates to the field of sulfur-containing silane coupling agent production technology, and in particular to a high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas. Background Technology

[0002] Silane coupling agents act as "molecular bridges" between inorganic materials (ceramics) and organic materials (resins, etc.), significantly improving the properties of ceramic composites through mechanisms such as chemical bonding, interface modification, and dispersion optimization. The following are their core functions and specific applications:

[0003] Reduce interfacial thermal resistance: The silane coupling agent reacts with the hydroxyl groups (Si-OH) generated by hydrolysis with the hydroxyl groups on the ceramic surface to form covalent bonds.

[0004] Enhanced bonding strength: In titanium-ceramic composite materials, the bonding strength of specimens treated with 33% silane coupling agent reached 53.86 MPa, which is 118% higher than the 24.71 MPa of the untreated group.

[0005] In alumina ceramic slurries, silane coupling agents can reduce the slurry viscosity to 4540 mPa·s and increase the solid content to 75% (mass fraction). The absolute value of the Zeta potential on the surface of alumina particles after silane treatment is increased to over 40 mV, forming a stable double-layer structure.

[0006] Applications in electronic ceramics: Silane coupling agent (2.5% addition) reduces the contact resistance of solar cell aluminum paste from 0.60Ω to 0.19Ω, reducing electrode scratches.

[0007] Enhanced surface coatings for modified ceramics: Silane coupling agents are used as tackifiers in ceramic-metal or ceramic-polymer coatings to improve adhesion and water resistance, for example, in electronic packaging to modify ceramic fillers to enhance the interfacial bonding of thermally conductive adhesives.

[0008] The production of sulfur-containing silane coupling agents generates various waste gases, including propylene waste gas, a byproduct of the synthesis of the intermediate chloropropyltrichlorosilane, and organic waste gases containing ethanol, which are present in the production of chloropropyltriethoxysilane and the final product, the sulfur-containing silane coupling agent bis-[3-(triethoxysilyl)propyl]-polysulfide. Currently, the waste gas treatment devices used in industry mainly include: spray absorption towers, plasma tail gas treatment devices, adsorption towers, ultraviolet photolysis devices, and incinerators.

[0009] The patent CN219291035U, entitled "Comprehensive Treatment Device for Organic Waste Gas," relates to the field of organic waste gas technology, specifically a comprehensive treatment device for organic waste gas. It includes a spray absorption tower with a dosing and circulation tank installed at its bottom. One end of the dosing and circulation tank is connected to an acid- and alkali-resistant circulation pump, and the top of the pump is connected to a spray pipe. A spraying device is installed at one end of the spray pipe inside the absorption tower, and an air outlet is installed at the top of the tower, with detection holes on its surface. However, this invention cannot completely decompose organic waste gas and generates secondary pollution such as wastewater.

[0010] Patent CN114673998A, entitled "Waste Gas Treatment Device," discloses a plasma exhaust gas treatment device. It includes one or more air inlets, a plasma torch, a reaction chamber, a cooling chamber, a trap, a heat exchanger, an exhaust port, and a power supply. Its advantages include no wastewater discharge and reduced secondary pollution. However, it suffers from high energy consumption and operating costs (requiring substantial electricity), susceptibility to damage (requiring frequent maintenance), and the generation of useless ozone during operation.

[0011] Adsorption-based exhaust gas treatment devices often use activated carbon as the adsorbent material, which has problems such as the need to replace the adsorbent regularly, low treatment efficiency for high-concentration exhaust gases, and the generation of solid waste pollutants.

[0012] Ultraviolet photolysis exhaust gas treatment devices are suitable for the catalytic decomposition of low-concentration waste gases and specific organic compounds. However, they suffer from low treatment efficiency for high-concentration waste gases and poor applicability.

[0013] Traditional incinerators have high energy consumption, use electric heating or natural gas heating to provide a high-temperature environment, have high waste gas treatment costs, and have a high risk of dioxin formation (>0.1 ng TEQ / Nm³).

[0014] To address these issues, we propose a high-efficiency and energy-saving high-temperature incineration system for sulfur-containing silane organic waste gas. Summary of the Invention

[0015] The purpose of this invention is to provide a high-efficiency and energy-saving high-temperature incineration system for sulfur-containing silane organic waste gas, so as to solve the problems mentioned in the background art.

[0016] To achieve the above objectives, the present invention provides the following technical solution:

[0017] A high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas includes a π-type high-temperature incinerator, a blower, an organic waste gas buffer tank, a propylene waste gas buffer tank, a dust silo, a soft water tank, an inlet water pump, a preheater, a quench tower, a dust collector, a primary absorption tower, a secondary absorption tower, and a chimney.

[0018] The π-type high-temperature incinerator includes a combustion chamber, water-cooled walls, a steam drum, a high-temperature economizer, an air heat exchanger, a low-temperature economizer, a downcomer, a lower header, and an upper header.

[0019] The soft water tank, water inlet pump, preheater, low-temperature economizer, high-temperature economizer, steam drum, downcomer, lower header, water-cooled wall pipe assembly, and upper header are connected in sequence, and the upper header is connected to the steam drum.

[0020] The bottom of the steam drum is connected to multiple downcomers via short pipes. The ends of the downcomers are connected to the side of the lower header using a welded structure to ensure sealing. A throttling ring is installed at the inlet to regulate the flow rate. The upper part of the lower header is connected to multiple water-cooled wall tubes via pipe seats using welded connections with uniform spacing. A throttling device is installed at the inlet section to balance the flow rate. The upper end of the water-cooled wall tubes is connected to the bottom of the upper header using a welded connection to allow for thermal expansion. The inclined arrangement facilitates steam-water separation. The upper header is connected to the steam drum via steam-water outlet pipes. Multiple outlet pipes are evenly distributed along the length of the steam drum, and large-radius elbows are used to reduce flow resistance.

[0021] The downcomer delivers water from the steam drum to the lower header, providing a continuous water source for the water-cooled walls. Inside, unheated saturated or undersaturated water flows, with a temperature about 20-30°C lower than that in the riser. The density difference creates natural circulation power, and the flow velocity is usually controlled at 1.5-3.5 m / s to prevent vaporization.

[0022] The lower header is a box with a square or round cross-section. One side is connected to the downcomer and the other side is connected to multiple water-cooled wall tubes. The box is equipped with baffles to achieve flow distribution. It is a key transition component connecting the downcomer and the water-cooled wall. The lower header is used to evenly distribute the water from the downcomer to each water-cooled wall tube and serves as a connection point for periodic drainage.

[0023] The upper header is located at the top of the water-cooled wall system. Its main functions are to collect the steam-water mixture generated by each water-cooled wall tube, perform preliminary separation of steam and water, and transport the mixture to the steam drum through the steam-water outlet pipe. The upper header is usually circular in cross-section, with an exhaust port at the top, and a simple separation device can be installed inside.

[0024] The blower, air heat exchanger, and combustion chamber are connected in sequence.

[0025] The lower part of the combustion chamber is connected to the outlet of the propylene waste gas buffer tank, and the upper part of the combustion chamber is connected to the outlet of the organic waste gas buffer tank. The high-temperature flue gas generated by combustion passes through the high-temperature economizer, the air heat exchanger, and the low-temperature economizer in sequence before entering the quench tower. Then it passes through the dust collector, the primary absorption tower, and the secondary absorption tower, and is finally discharged through the chimney.

[0026] The above connection method forms a complete natural circulation loop: steam drum → downcomer → lower header → water-cooled wall → upper header → steam-water outlet pipe → steam drum, relying on the density difference of the working fluid to achieve continuous circulation.

[0027] Furthermore, a continuous online monitoring system is installed on the upper part of the chimney.

[0028] Furthermore, the combustion chamber is equipped with a multi-layer combustion device, with the lower layer consisting of 4-10 propylene waste gas burners and an air inlet, and the upper layer consisting of 2-6 organic waste gas burners and several symmetrical air inlets.

[0029] Furthermore, the lower combustion device of the combustion chamber consists of 8 propylene exhaust gas burners and 8 corresponding fuel gas nozzles, with 2 propylene exhaust gas burners symmetrically arranged in each of the four directions (front, back, left, and right), and 4 air inlets.

[0030] Furthermore, the π-type high-temperature incinerator is a natural circulation boiler, which is a full membrane structure welded from Φ50-100 seamless steel pipes and flat steel.

[0031] Furthermore, the high-temperature economizer and the low-temperature economizer are arranged in a counter-current manner, with the water and flue gas flowing in opposite directions. The high-temperature economizer is preferably arranged vertically and is made of Φ30-46 seamless steel pipe and flat steel welded into a membrane structure. The low-temperature economizer is arranged in a horizontal row and its pipe specification is Φ25-32.

[0032] The operating temperature range of the low-temperature economizer is 180-200℃, and its outlet water temperature is 150-170℃.

[0033] The operating temperature range of the high-temperature economizer is 400-450℃, and its outlet water temperature is 210-230℃.

[0034] Furthermore, the water-cooled wall is composed of Φ50-100 tubes.

[0035] Furthermore, the outlet air temperature of the air heat exchanger is controlled at 250-280℃, and the combustion chamber temperature is controlled at 1100-1200℃.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] This invention employs a novel π-type high-temperature incinerator, combined with integrated flue gas after-treatment technology, effectively improving the efficiency and thoroughness of waste gas treatment. Through integrated design, it reduces the equipment's footprint, enhancing the overall system's compactness and operational efficiency. Simultaneously, the introduction of a multi-stage waste heat recovery device efficiently recovers waste heat from the incineration process, which is then used for co-production of steam, achieving energy recycling. This design not only reduces energy consumption but also improves the system's economic and environmental performance.

[0038] The combustion chamber of this invention features a multi-layer combustion device and gradient pyrolysis technology, ensuring complete combustion and high incineration removal rate of the waste gas. By precisely controlling the combustion chamber temperature and reaction residence time, the risk of generating harmful substances such as dioxins is effectively reduced. Furthermore, in actual operation, the incinerator system of this invention exhibits emission indicators far below control standards, demonstrating its superior environmental performance. Simultaneously, by utilizing propylene waste gas produced as a byproduct of the production process as auxiliary fuel gas, resource utilization of waste is achieved, reducing environmental treatment costs. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the connection structure of the steam drum, downcomer, lower header, and upper header in this invention;

[0041] Figure 3 This is a monitoring curve of particulate matter content during the implementation of this invention. The X-axis represents time (H), and the Y-axis represents the unit (mg / m³). 3 );

[0042] Figure 4 This is a monitoring curve of sulfur dioxide content during the implementation of this invention. The X-axis represents time (H), and the Y-axis represents the unit (mg / m³). 3 );

[0043] Figure 5 This is a monitoring curve of nitrogen oxide content during the implementation of this invention. The X-axis represents time (H), and the Y-axis represents the unit (mg / m³). 3 );

[0044] Figure 6 This is a monitoring chart of particulate matter content over 15 days during the implementation of this invention;

[0045] Figure 7 For monitoring sulfur dioxide content within 15 days during the implementation of this invention;

[0046] Figure 8 This is a data graph of various parameters in the continuous emission monitoring system of this invention.

[0047] In the diagram: 1. π-type high-temperature incinerator; 2. Organic waste gas buffer tank; 3. Propylene waste gas buffer tank; 4. Combustion chamber; 5. Water-cooled wall; 6. Steam drum; 7. High-temperature economizer; 8. Air heat exchanger; 9. Low-temperature economizer; 10. Blower; 11. Dust bin; 12. Soft water tank; 13. Inlet pump; 14. Preheater; 15. Quench tower; 16. Dust collector; 17. Primary absorption tower; 18. Secondary absorption tower; 19. Chimney; 20. Downcomer; 21. Lower header; 22. Upper header; 23. Steam and water outlet pipe. Detailed Implementation

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the 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 invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1

[0052] A high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas includes a π-type high-temperature incinerator 1, a blower 10, an organic waste gas buffer tank 2, a propylene waste gas buffer tank 3, a dust bin 11, a soft water tank 12, an inlet water pump 13, a preheater 14, a quench tower 15, a dust collector 16, a primary absorption tower 17, a secondary absorption tower 18, and a flue 19. The π-type high-temperature incinerator 1 includes a combustion chamber 4, a water-cooled wall 5, a steam drum 6, a high-temperature economizer 7, an air heat exchanger 8, and a low-temperature economizer 9.

[0053] The water-steam connection is implemented as follows: soft water tank 12-inlet pump 13-preheater 14-low temperature economizer 9-high temperature economizer 7-steam drum 6-downcomer 20-lower header 21-water-cooled wall tube assembly-upper header 22-steam drum 6-steam output;

[0054] Air is connected as follows: blower 10 - air heat exchanger 8 - combustion chamber 4;

[0055] The exhaust gas treatment is connected as follows: the lower part of the combustion chamber 4 is connected to the outlet of the propylene exhaust gas buffer tank 3, and the upper part of the combustion chamber 4 is connected to the outlet of the organic exhaust gas buffer tank 2. The high-temperature flue gas generated by combustion passes through the high-temperature economizer 7, the air heat exchanger 8, and the low-temperature economizer 9 in sequence before entering the quench tower 15. Then it passes through the dust collector 16, the primary absorption tower 17, and the secondary absorption tower 18, and is finally discharged through the flue 19. A continuous online monitoring system is installed at the top of the flue 19.

[0056] In the above, the combustion chamber 4 is equipped with a multi-layer combustion device. The lower layer of the combustion chamber 4 is arranged with 4-10 propylene exhaust gas burners, preferably 8 propylene exhaust gas burners and corresponding 8 fuel gas nozzles. Preferably, 2 propylene exhaust gas burners are symmetrically arranged in each of the four directions: front, back, left, and right. At the same time, the lower layer is equipped with 4 air inlets to ensure complete combustion and uniform temperature distribution.

[0057] In the above description, the π-type high-temperature incinerator 1 is a natural circulation boiler. It adopts a fully sealed structure, with the furnace preferably constructed from Φ50-100 seamless steel pipes welded to flat steel in a full membrane structure. The incinerator structure consists sequentially of a combustion chamber with membrane water-cooled walls, a high-temperature economizer, an air preheater, a low-temperature economizer, and an external steel frame structure. The economizer preferably adopts a counter-current arrangement, with water and flue gas flowing in opposite directions. The low-temperature economizer 9 preheats the feedwater, reducing the exhaust gas temperature and heat loss; its preferred operating temperature range is 180-200℃, and its preferred outlet water temperature is 150-170℃. The high-temperature economizer 7 further heats the feedwater, improving thermal efficiency; its preferred operating temperature range is 400-450℃, and its preferred outlet water temperature is 210-230℃. The high-temperature water enters the steam drum 6 from the economizer outlet for steam-water separation, producing saturated steam.

[0058] In the above description, the water-cooled wall 5 is preferably composed of Φ50-100 tubes. The water-cooled wall is the main heating surface of the incinerator, arranged around the furnace, primarily absorbing the radiant heat from the high-temperature flames or flue gas in the furnace. The water circulation system of the water-cooled wall is preferably a circulation loop consisting of the steam drum 6, downcomer 20, lower header 21, and the riser pipes and upper header 22 of the water-cooled wall 5 tube assembly. The preferred water inlet flow direction for the water-cooled wall 5 is as follows: water from the steam drum 6 flows into the lower header 21 through the downcomer 20, then enters the water-cooled wall 5 tube assembly, where it is heated to form a steam-water mixture that rises to the steam drum 6.

[0059] In the above, the economizer is preferably arranged in two stages. The high-temperature economizer 7 is preferably arranged vertically. To reduce ash accumulation and enhance heat transfer, the high-temperature economizer 7 is preferably made of Φ30-46 seamless steel pipe and flat steel welded into a membrane structure. The low-temperature economizer 9 is preferably arranged in a horizontal row and located after the air preheater. The tube specification of the low-temperature economizer 9 is preferably Φ25-32.

[0060] In the above, the combustion air is supplied to the air heat exchanger 8 by the blower 10 installed outside the incinerator. After heat exchange, the outlet air temperature of the air heat exchanger 8 is preferably controlled at 250-280℃.

[0061] In the above, the combustion chamber temperature is ≥1100℃, preferably controlled at 1100-1200℃; the reaction residence time is preferably controlled at 2-3s.

[0062] In the above process, after the waste heat is recovered from the incinerator, the flue gas enters the quench tower 15 and is cooled to 160-190°C before entering the dust collector 16. The exhaust gas after dust removal enters the primary absorption tower 17 and the secondary absorption tower 18, and is discharged through the smoke window 19. The flue gas emission indicators are monitored online 24 hours a day by a continuous online monitoring system.

[0063] The above-mentioned method is used to treat sulfur-containing silane organic waste gas.

[0064] Example 1 Implementation Results:

[0065] Chemical reaction formula:

[0066] Main reaction chain oxidation reaction:

[0067]

(C2H5O)3Si(CH2)3

[0068] Comparison of exhaust gas treatment emission indicators (online monitoring):

[0069] <![CDATA[VOCs emission value, mg / Nm 3 > <![CDATA[NOx emission value, mg / Nm 3 > <![CDATA[Particulate emission value, mg / Nm 3 > <![CDATA[SO2 emission value, mg / Nm 3 > Control Indicators ≤40 ≤300 ≤30 ≤100 Actual operating indicators ≤10 ≤100 ≤20 ≤10

[0070] Actual VOC control indicators such as Figure 8 As shown, it corresponds to the data in the table above.

[0071] In this implementation, the emission values ​​for particulate matter, sulfur dioxide, and nitrogen oxides are as follows: Figure 3-5 As shown.

[0072] Comparative Example 1

[0073] Traditional incinerators for treating sulfur-containing silane organic waste gas

[0074] Technical solution:

[0075] It adopts a traditional incinerator structure, without using a π-type high-temperature incinerator and integrated flue gas after-treatment technology. The waste gas directly enters the incinerator for combustion, and no multi-stage waste heat recovery device is installed. The combustion chamber temperature and reaction residence time are not precisely controlled.

[0076] Implementation results: The waste gas treatment efficiency is low, with an incineration removal rate of about 90-95%. Energy consumption is high. Due to the lack of a waste heat recovery mechanism, the risk of generating harmful substances such as dioxins is relatively high because the combustion conditions and flue gas after-treatment are not optimized.

[0077] Comparative Example 1: Implementation Results

[0078] Comparison of exhaust gas treatment emission indicators (online monitoring):

[0079] <![CDATA[VOCs emission value, mg / Nm 3 > <![CDATA[NOx emission value, mg / Nm 3 > <![CDATA[Particulate emission value, mg / Nm 3 > <![CDATA[SO2 emission value, mg / Nm 3 > Comparative indicator 1 32 95 25 22

[0080] Comparative Example 2

[0081] Plasma exhaust gas treatment device is used to treat sulfur-containing silane organic waste gas.

[0082] Technical solution: Use a plasma exhaust gas treatment device to replace the incinerator. This device generates high-temperature plasma to decompose the exhaust gas through a plasma torch. It does not use a multi-stage waste heat recovery device to co-produce steam, and the exhaust gas treatment process does not include flue gas post-treatment equipment such as quench towers, dust collectors, and absorption towers.

[0083] Implementation results: Although there is no wastewater discharge, the energy consumption and operating costs are high, a large amount of electricity is required, the equipment is easily damaged and requires frequent maintenance, which affects the stability of production. During operation, useless ozone and other byproducts may be generated, causing secondary pollution to the environment. The waste gas treatment efficiency is not as good as that of Example 1, especially for high-concentration waste gas.

[0084] Comparative Example 2: Implementation Results

[0085] Comparison of exhaust gas treatment emission indicators (online monitoring):

[0086] <![CDATA[VOCs emission value, mg / Nm 3 > <![CDATA[NOx emission value, mg / Nm 3 > <![CDATA[Particulate emission value, mg / Nm 3 > <![CDATA[SO2 emission value, mg / Nm 3 > Comparative indicator 2 52 120 32 25

[0087] Comparative Example 3

[0088] Sulfur-containing silane organic waste gas is treated using an adsorption method tail gas treatment device.

[0089] Technical solution:

[0090] The exhaust gas treatment device uses adsorption method with activated carbon as the adsorbent material to adsorb the organic components in the exhaust gas. However, it does not have an incinerator or a multi-stage waste heat recovery device. The adsorbent needs to be replaced regularly, which generates solid waste pollutants.

[0091] Implementation results: The adsorption method has low efficiency in treating high-concentration waste gas and may not meet strict emission requirements. Frequent replacement of adsorbents increases operating costs and maintenance workload. The generated solid waste pollutants require additional treatment, increasing the environmental burden.

[0092] Comparative Example 3: Implementation Results

[0093] Comparison of exhaust gas treatment emission indicators (online monitoring):

[0094] <![CDATA[VOCs emission value, mg / Nm 3 > <![CDATA[NOx emission value, mg / Nm 3 > <![CDATA[Particulate matter emission value, mg / Nm 3 > <![CDATA[SO2 emission value, mg / Nm 3 > Comparative 3 indicators 95 0.1 35 28

[0095] Compared to Example 1, it lacks the combined advantages of high efficiency, energy saving, and green environmental protection.

[0096] In terms of structural advantages, this invention features a lower steel frame, making installation and maintenance convenient. The heated surfaces can be easily arranged in a counter-flow configuration, resulting in high reliability of natural circulation. In terms of performance characteristics, the downcomer is not heated, ensuring sufficient circulation power. The manifold system is simplified, reducing pressure loss, and the heat load distribution of the water-cooled wall is uniform. In terms of maintenance advantages, the manifold inspection holes are easy to set, the external arrangement of the downcomer facilitates inspection, and partial replacement and maintenance are simple.

[0097] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency and energy-saving high-temperature incineration system for sulfur-containing silane organic waste gas, characterized in that: Includes a π-type high-temperature incinerator, blower, organic waste gas buffer tank, propylene waste gas buffer tank, dust silo, soft water tank, water inlet pump, preheater, quench tower, dust collector, primary absorption tower, secondary absorption tower, and chimney; The π-type high-temperature incinerator includes a combustion chamber, water-cooled walls, a steam drum, a high-temperature economizer, an air heat exchanger, a low-temperature economizer, a downcomer, a lower header, and an upper header. The soft water tank, water inlet pump, preheater, low-temperature economizer, high-temperature economizer, steam drum, downcomer, lower header, water-cooled wall pipe assembly, and upper header are connected in sequence, and the upper header is connected to the steam drum. The downcomer delivers water from the steam drum to the lower header, providing a continuous water source for the water-cooled walls. One side of the lower header is connected to the downcomer, and the other side is connected to multiple water-cooled wall tubes. The lower header is used to evenly distribute the water from the downcomer to each water-cooled wall tube and serves as a connection point for periodic drainage. The upper header is located on the upper part of the water-cooled wall and transports the mixture to the steam drum through the steam-water outlet pipe; The blower, air heat exchanger, and combustion chamber are connected in sequence. The lower part of the combustion chamber is connected to the outlet of the propylene waste gas buffer tank, and the upper part of the combustion chamber is connected to the outlet of the organic waste gas buffer tank. The high-temperature flue gas generated by combustion passes through the high-temperature economizer, the air heat exchanger, and the low-temperature economizer in sequence before entering the quench tower. Then it passes through the dust collector, the primary absorption tower, and the secondary absorption tower, and is finally discharged through the chimney. The combustion chamber is equipped with a multi-layer combustion device. The lower layer consists of 4-10 propylene waste gas burners and an air inlet. The upper layer consists of 2-6 organic waste gas burners and a number of symmetrical air inlets. The main reaction chain oxidation reaction formula is as follows: 【(C2H5O)3Si(CH2)3】2S4+31.5O2→2SiO2+18CO2+4SO2+21H2O.

2. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: A continuous online monitoring system is installed on the upper part of the chimney.

3. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: The lower combustion device of the combustion chamber consists of 8 propylene exhaust gas burners and 8 corresponding fuel gas nozzles. Two propylene exhaust gas burners are symmetrically arranged in each of the four directions (front, back, left, and right), and four air inlets are also provided.

4. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: The π-type high-temperature incinerator is a natural circulation boiler, which is a full membrane structure welded from Φ50-100 seamless steel pipes and flat steel.

5. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: The high-temperature economizer and the low-temperature economizer are arranged in a counter-current manner, with water and flue gas flowing in opposite directions. The high-temperature economizer is made of Φ30-46 seamless steel pipe and flat steel welded into a membrane structure, and the low-temperature economizer is arranged in a horizontal row, with pipe specifications of Φ25-32. The operating temperature range of the low-temperature economizer is 180-200℃, and its outlet water temperature is 150-170℃. The operating temperature range of the high-temperature economizer is 400-450℃, and its outlet water temperature is 210-230℃.

6. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: The water-cooled wall is composed of Φ50-100 tubes.

7. The high-efficiency and energy-saving high-temperature incineration treatment system for sulfur-containing silane organic waste gas according to claim 1, characterized in that: The outlet air temperature of the air heat exchanger is controlled at 250-280℃, and the combustion chamber temperature is controlled at 1100-1200℃.

Citation Information

Patent Citations

  • Waste gas treatment device

    CN114673998A

  • Comprehensive treatment device for organic waste gas

    CN219291035U

  • Novel carbon black tail gas boiler and carbon black tail gas treatment method

    CN118168006A