An annular heat accumulating incinerator with easily replaceable heat accumulators

Abstract

The application discloses a ring-shaped heat accumulating incineration device with easily replaceable heat accumulating bodies, which comprises a combustion chamber and at least three heat accumulating units, and the combustion chamber and the heat accumulating units are all in the shape of a circular arc; the heat accumulating unit comprises an upper heat accumulating chamber and a lower heat accumulating chamber; the upper heat accumulating chambers of the heat accumulating units are communicated with each other to form an upper heat accumulating space in the shape of a circular arc; the device further comprises a ring-shaped heat accumulating rotating unit; the ring-shaped heat accumulating rotating unit comprises a ring-shaped heat accumulating body; the ring-shaped heat accumulating body is matched with the upper heat accumulating space in the shape of a circular arc, passes through the upper heat accumulating space, and is partially located in the upper heat accumulating space and partially located outside the upper heat accumulating space, and the ring-shaped heat accumulating body can rotate around the center thereof; the ring-shaped heat accumulating body located in the upper heat accumulating chamber and the heat accumulating body located in the lower heat accumulating chamber below the ring-shaped heat accumulating body jointly realize the heat accumulating function; and the heat accumulating body located in the upper heat accumulating chamber is replaced by rotating the ring-shaped heat accumulating body. The application has the advantages of simple replacement of the heat accumulating body, on-line replacement without production stoppage and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of waste gas treatment, and relates to a regenerative incineration device, in particular to an annular regenerative incineration device with replaceable regenerators. BACKGROUND

[0002] RTO is currently recognized as the most efficient VOCs treatment technology, which mainly completely oxidizes and decomposes VOCs in a high-temperature (>750℃) environment in a furnace. The heat in the furnace is recovered through the regenerative ceramic of the RTO, so as to ensure long-term stable and low-energy-consumption operation of the RTO. The heat recovery efficiency of the general RTO is ≥90%, and the VOCs purification efficiency is ≥98%.

[0003] The actual VOCs waste gas composition is extremely complex. For example, a large amount of organosilicon substances are used in the semiconductor industry or the coating industry, and under high-temperature conditions, the oxidation and decomposition products are not only water and carbon dioxide, but also silicon dioxide. The RTO regenerative ceramic currently widely used is an aluminum silicate ceramic, which contains a large amount of silicon dioxide. Under high-temperature conditions, the regenerative ceramic with similar properties will be firmly combined with the silicon dioxide produced by gas decomposition in the form of a chemical bond, that is, the oxidation product dioxide uses part of the sites on the regenerative ceramic as a crystal nucleus to continue to generate crystals. The production area of the gaseous silicon dioxide on the regenerative ceramic is basically concentrated in the high-temperature zone close to the furnace, mainly because high-temperature conditions can quickly promote the growth of crystals. Generally, the pore of the regenerative ceramic is small, and the pore will be quickly blocked by the newly generated silicon dioxide crystals, which eventually leads to an increase in the pressure of the RTO system, a significant increase in energy consumption, and an inability to meet the production exhaust requirements, which seriously affects the normal production of enterprises. SUMMARY

[0004] The present application provides an annular regenerative incineration device with replaceable regenerators to overcome the defects of the prior art.

[0005] To achieve the above objectives, the present invention provides an annular regenerative combustion device with easily replaceable regenerators, comprising a combustion chamber and at least three regenerator units, wherein the regenerator units are located below and connected to the combustion chamber, and are characterized by the following features: the combustion chamber and the regenerator units are all arc-shaped; each regenerator unit includes an upper regenerator chamber and a lower regenerator chamber; a regenerator is disposed in the lower regenerator chamber; the upper regenerator chambers of the regenerator units are interconnected to form an arc-shaped upper regenerator space; the device also includes an annular regenerator rotating unit; the annular regenerator rotating unit... The unit includes an annular heat storage body, which is a circular structure formed by the heat storage body. The annular heat storage body matches the arc-shaped upper heat storage space. The annular heat storage body passes through the upper heat storage space, with part of it located inside the upper heat storage space and the remaining part located outside the upper heat storage space. The annular heat storage body can rotate around its center. The annular heat storage body located in the upper heat storage chamber and the heat storage body in the lower heat storage chamber below it together realize the heat storage function of the heat storage unit. The heat storage body located in the upper heat storage chamber can be replaced by rotating the annular heat storage body.

[0006] Furthermore, the present invention provides an annular regenerative incinerator with an easily replaceable heat storage body, which may also have the following features: wherein the annular heat storage body is provided with a plurality of partitions, the partitions dividing the annular heat storage body into multiple heat storage zones; the heat storage zones are matched with the upper heat storage chamber; by rotating the annular heat storage body, the multiple heat storage zones are aligned with the upper heat storage chamber of the multiple heat storage units, each heat storage zone and its lower heat storage chamber below it constitute an independent sealed heat storage unit, and the remaining heat storage zones are left outside the device; the heat storage body in the upper heat storage chamber is replaced by rotating the annular heat storage body.

[0007] Furthermore, the present invention provides an annular regenerative incineration device with an easily replaceable heat storage body, which may also have the following features: wherein the annular heat storage rotating unit further includes a rotatable annular support; the annular support matches the annular heat storage body, the annular heat storage body is disposed on the annular support, the annular support also passes through the upper heat storage space, and the annular support drives the annular heat storage body to rotate.

[0008] Furthermore, the present invention provides an annular regenerative incinerator with an easily replaceable heat storage body, which may also have the following feature: differential pressure gauges are installed on the upper and lower sides of the heat storage zone to measure the pressure difference between the upper and lower sides of the heat storage body in the heat storage zone.

[0009] Furthermore, the present invention provides an annular regenerative incinerator with an easily replaceable heat storage body, which may also have the following feature: when the differential pressure value measured by the differential pressure gauge is greater than a set value, the annular support is driven to rotate to replace the heat storage body.

[0010] Furthermore, the present invention provides an annular regenerative incinerator with easily replaceable heat storage elements, and may also have the following feature: wherein the number of heat storage units is three.

[0011] Further, the application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, and can have the feature that the three heat accumulating units are semicircular; the ring-shaped heat accumulator is provided with six heat accumulating areas, three of which are located in the upper heat accumulating space and form three heat accumulating units with the lower heat accumulating chambers below them, and the remaining three heat accumulating areas are left outside the device.

[0012] Further, the application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, and can have the feature that the two sides of the upper heat accumulating chamber of the heat accumulating unit are provided with sealing structures matched with the partition plates, and when the ring-shaped heat accumulator rotates to the position where the heat accumulating area is aligned with the upper heat accumulating chamber, the sealing structures and the partition plates jointly seal the heat accumulating unit.

[0013] Further, the application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, and can have the feature that the sealing structure is ceramic fiber or glass fiber.

[0014] Further, the application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, and can have the feature that the heat accumulator is heat accumulating ceramic.

[0015] The application has the beneficial effect that when the RTO processes silicon-containing organic matter, the high-temperature heat accumulator adjacent to the combustion chamber is prone to be blocked. When the conventional RTO is blocked, the heat accumulator needs to be replaced during production stoppage, and the production stoppage time is generally more than one day due to the shutdown cooling and heating process, which is difficult to accept for continuous production enterprises. The application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, which is designed as a circular arc structure, and a rotatable ring-shaped heat accumulator is configured, so as to realize automatic replacement of the heat accumulator in the upper heat accumulating chamber. At the same time, the blocked heat accumulator does not need to be replaced during production stoppage, has little effect on production, and can guarantee the continuous production requirement of the enterprise. The device of the application not only simplifies the replacement of the heat accumulator, but also realizes continuous production without production stoppage during the replacement of the heat accumulator, which meets the existing demand. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a top view of the ring-shaped heat accumulating incineration device with easily replaceable heat accumulators of the application.

[0017] Fig. 2 is a front sectional view of the ring-shaped heat accumulating incineration device with easily replaceable heat accumulators of the application.

[0018] Fig. 3 is a side view of the ring-shaped heat accumulating incineration device with easily replaceable heat accumulators of the application. DETAILED DESCRIPTION

[0019] The specific embodiments of the present application are described below with reference to the accompanying drawings.

[0020] As Figs. 1-3 shown, the present application provides a ring-shaped heat accumulating incineration device with easily replaceable heat accumulators, which comprises a combustion chamber 1 and at least three heat accumulating units 2, and the plurality of heat accumulating units 2 are located below the combustion chamber 1 and communicate with the combustion chamber 1.

[0021] The combustion chamber 1 and the plurality of heat accumulating units 2 are both circular arc-shaped.

[0022] The heat accumulating unit 2 comprises an upper heat accumulating chamber 21 and a lower heat accumulating chamber 22 which communicate with each other. The lower heat accumulating chamber 22 is provided with heat accumulators. Specifically, the heat accumulators are heat accumulating ceramics.

[0023] The upper heat accumulating chambers 21 of the plurality of heat accumulating units 2 communicate with each other to form a circular arc-shaped upper heat accumulating space.

[0024] The device further comprises a ring-shaped heat accumulating rotating unit 3. The ring-shaped heat accumulating rotating unit 3 comprises a ring-shaped heat accumulator 31 which is a circular ring structure formed by heat accumulators. The ring-shaped heat accumulator 31 matches the circular arc-shaped upper heat accumulating space, and the ring-shaped heat accumulator 31 passes through the upper heat accumulating space, part of which is located in the upper heat accumulating space and the remaining part is located outside the upper heat accumulating space, and the ring-shaped heat accumulator 31 can rotate around the center. The ring-shaped heat accumulator 31 located in the upper heat accumulating chamber 21 and the heat accumulators in the lower heat accumulating chamber 22 below it jointly realize the heat accumulating function of the heat accumulating unit 2. The heat accumulators located in the upper heat accumulating chamber 21 are replaced by rotating the ring-shaped heat accumulator 31.

[0025] Specifically, the ring-shaped heat accumulator 31 is provided with a plurality of partitions 311 which separate the ring-shaped heat accumulator 31 into a plurality of heat accumulating areas 312 (i.e. each heat accumulating area 312 is filled with heat accumulators). The heat accumulating areas 312 match the upper heat accumulating chambers 21. By rotating the ring-shaped heat accumulator 31, the plurality of heat accumulating areas 312 are aligned with the upper heat accumulating chambers 21 of the plurality of heat accumulating units 2, and each heat accumulating area 312 and the lower heat accumulating chamber 22 below it constitute an independently sealed heat accumulating unit 2 (here, the sealing refers to the sealing isolation between the heat accumulating units 2 and the outside world), and the remaining heat accumulating areas 312 are left outside the device.

[0026] The ring-shaped heat accumulating rotating unit 3 further comprises a rotatable ring-shaped support 32. The ring-shaped support 32 matches the ring-shaped heat accumulator 31, and the ring-shaped heat accumulator 31 is arranged on the ring-shaped support 32. The ring-shaped support 32 also passes through the upper heat accumulating space, and the ring-shaped support 32 drives the ring-shaped heat accumulator 31 to rotate.

[0027] The ring-shaped heat accumulator 31 is rotated by the ring-shaped support 32, so as to replace the heat accumulators in the upper heat accumulating chamber 21, thereby achieving the purpose of quickly replacing the heat accumulators in the upper heat accumulating chamber 21.

[0028] Preferably, the upper heat storage chamber 21 of the heat storage unit 2 is provided with a sealing structure matching the partition plate 311 on both sides, and the sealing structure cooperates with the partition plate 311 to seal the heat storage unit 2 when the annular heat storage body 31 is rotated to the heat storage area 312 aligned with the upper heat storage chamber 21. The sealing structure is ceramic fiber or glass fiber.

[0029] The rotation of the annular support can be achieved by various prior art. For example, an annular guide rail is arranged under the annular support 32 (half inside the RTO and half outside the RTO), and a tooth structure meshing with a gear is arranged on the inner side or the outer side of the annular support 32, and the annular support 32 is driven to rotate by driving the gear, and the like. Various prior art can achieve the rotation of the annular support, which will not be described here.

[0030] In this embodiment, the number of heat storage units 2 is three. The three heat storage units 2 are semicircular. The annular heat storage body 31 is provided with six heat storage areas 312, three of which are located in the upper heat storage space and form three heat storage units 2 with the lower heat storage chambers 22 below them, and the remaining three heat storage areas 312 are left outside the device. Of course, the three heat storage units 2 can also be designed as one-third of a circular arc, and the corresponding annular heat storage body 31 is provided with nine heat storage areas 312, etc.

[0031] Further, the upper and lower sides of the heat storage area 312 are provided with a differential pressure gauge for measuring the pressure difference of the upper and lower sides of the heat storage body in the heat storage area 312. When the pressure difference measured by the differential pressure gauge is greater than the set value, the annular support 32 is driven to rotate to replace the heat storage body. Specifically, the pressure difference value measured by the differential pressure gauge is linked to the driving device of the annular support 32, and when the pressure difference value reaches the set value (representing that the heat storage body is blocked to a certain extent and needs to be replaced), the driving device of the annular support 32 is started to automatically replace the heat storage body in the upper heat storage chamber 21.

[0032] In operation, the annular support 32 is rotated to align the three heat storage areas 312 of the annular heat storage body 31 with the three heat storage units 2, each heat storage area 312 and the lower heat storage chamber 22 below it form an independently sealed heat storage unit 2, and the remaining three heat storage areas 312 are left outside the device, and the RTO continues to operate. When the pressure difference measured by the differential pressure gauge is greater than the set value, the driving device of the annular support 32 is started, the annular support 32 is rotated, the heat storage body outside the RTO is rotated to the inside of the RTO, and the heat storage body inside the RTO is rotated to the outside, thereby achieving automatic replacement of the heat storage body in the upper heat storage chamber 21. The rotated heat storage body is cleaned or replaced outside the device according to the actual situation for the next rotation and replacement.

[0033] In the replacement process, the RTO keeps the original state and continues to run without stopping production. The upper regenerator 21 is provided with sealing structure on both sides, and the regenerator fills the regenerator area 312, so that the combustion chamber 1, the upper regenerator 21 and the lower regenerator 22 are still relatively closed and complete during rotation. Even if the replacement is not stopped, the exhaust gas will not leak. At the same time, although the replaced regenerator is at room temperature, the RTO purification efficiency can be ensured by increasing the natural gas consumption, that is, the RTO still has the exhaust gas purification function.

Claims

1. An annular regenerative incinerator with replaceable regenerative bodies, comprising a combustion chamber and at least three regenerative units, a plurality of regenerative units being located below the combustion chamber and in communication with the combustion chamber, characterized in that: the combustion chamber and the plurality of regenerative units are both circular arc-shaped; the regenerative unit comprises an upper regenerative chamber and a lower regenerative chamber; the lower regenerative chamber is provided with a regenerative body; the upper regenerative chambers of the plurality of regenerative units are in communication with each other, forming a circular arc-shaped upper regenerative space; the device further comprises an annular regenerative rotating unit; the annular regenerative rotating unit comprises an annular regenerative body, which is a circular ring structure formed by the regenerative bodies; the annular regenerative body matches the circular arc-shaped upper regenerative space, passes through the upper regenerative space, and is partially located in the upper regenerative space and partially located outside the upper regenerative space, and the annular regenerative body can rotate around its center; the annular regenerative body located in the upper regenerative chamber and the regenerative body located in the lower regenerative chamber below it jointly realize the regenerative function of the regenerative unit; the regenerative body located in the upper regenerative chamber is replaced by rotating the annular regenerative body; the annular regenerative body is provided with a plurality of partitions, which separate the annular regenerative body into a plurality of regenerative zones; the regenerative zones match the upper regenerative chambers; the plurality of regenerative zones are aligned with the upper regenerative chambers of the plurality of regenerative units by rotating the annular regenerative body, each regenerative zone and the lower regenerative chamber below it form an independently sealed regenerative unit, and the remaining regenerative zones are left outside the device; the regenerative body in the upper regenerative chamber is replaced by rotating the annular regenerative body; the annular regenerative rotating unit further comprises a rotatable annular support; the annular support matches the annular regenerative body, the annular regenerative body is arranged on the annular support, the annular support also passes through the upper regenerative space, and the annular support drives the annular regenerative body to rotate; both sides of the upper regenerative chamber of the regenerative unit are provided with sealing structures matching the partitions; when the annular regenerative body is rotated to align the regenerative zone with the upper regenerative chamber, the sealing structures and the partitions jointly seal the regenerative unit.

2. The annular regenerative incinerator with replaceable regenerative bodies according to claim 1, characterized in that: differential pressure gauges are arranged on the upper and lower sides of the regenerative zones to measure the pressure difference on the upper and lower sides of the regenerative bodies in the regenerative zones.

3. The annular regenerative incinerator with replaceable regenerative bodies according to claim 2, characterized in that: when the pressure difference measured by the differential pressure gauges is greater than a set value, the annular support is driven to rotate to replace the regenerative bodies.

4. The annular regenerative incinerator with replaceable regenerative bodies according to claim 1, characterized in that: the number of regenerative units is three.

5. The annular regenerative incinerator with replaceable regenerative bodies according to claim 4, characterized in that: the three regenerative units are semicircular; the annular regenerative body is provided with six regenerative zones, three of which are located in the upper regenerative space and form three regenerative units with the lower regenerative chambers below them, and the remaining three regenerative zones are left outside the device.

6. The annular regenerative incinerator with replaceable regenerative bodies according to claim 1, characterized in that: the sealing structure is ceramic fiber or glass fiber. ​ ​ ​ ​ ​ ​ wherein ​ ​ wherein ​ ​ wherein ​ ​ wherein ​ ​ ​ wherein, ​ 7. The ring-shaped heat accumulating incineration device with easily replaceable heat accumulators according to claim 1, characterized in that: wherein the heat accumulators are heat accumulating ceramics.

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