阅读说明：本技术 一种用于水冷壁直连废锅全热回收气化炉的汽包 (Steam pocket for water-cooled wall direct-connected waste boiler total heat recovery gasification furnace ) 是由 赵宏伟 周印梅 郝彦林 杨洲 于 2020-07-17 设计创作，主要内容包括：本发明涉及汽包结构,具体为一种用于水冷壁直连废锅全热回收气化炉的汽包,解决了背景技术的技术问题,其中旋风分离器底部托斗的底面向上倾斜设置；汽包包括梯型波形板分离器、清洗孔板、多孔板和顶部波形板分离器,梯型波形板分离器安装于大直径旋风分离器的顶部用于替代直筒型波形板分离器；清洗孔板安装于梯型波形板分离器上方及给水分配装置下方的压力容器筒体内壁上,顶部波形板分离器和多孔板由近及远依次固定在给水分配装置上方的压力容器筒体内壁上；清洗孔板的四周均设有防止水侧流的溢水门榄。本发明较背景技术中的汽包增加了三次分离过程增大了蒸汽处理量,增加了蒸汽清洗,汽水分离效果好,可生产高品质蒸汽,安全可靠。(The invention relates to a steam pocket structure, in particular to a steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace, which solves the technical problem of the background technology, wherein the bottom surface of a supporting bucket at the bottom of a cyclone separator is arranged in an upward inclined way; the steam pocket comprises a trapezoidal corrugated plate separator, a cleaning pore plate, a porous plate and a top corrugated plate separator, wherein the trapezoidal corrugated plate separator is arranged at the top of the large-diameter cyclone separator and is used for replacing a straight-tube corrugated plate separator; the cleaning pore plate is arranged on the inner wall of the pressure vessel cylinder above the trapezoidal corrugated plate separator and below the water supply distribution device, and the top corrugated plate separator and the porous plate are sequentially fixed on the inner wall of the pressure vessel cylinder above the water supply distribution device from near to far; the periphery of the cleaning pore plate is provided with overflow gates for preventing water from flowing laterally. Compared with the steam drum in the background art, the invention increases three times of separation processes, increases the steam treatment capacity, increases the steam cleaning, has good steam-water separation effect, can produce high-quality steam, and is safe and reliable.)

1. A steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace comprises a pressure vessel cylinder (19), a large-diameter cyclone separator (2) and a cyclone separator bottom supporting bucket (3), and is characterized in that the bottom surface of the cyclone separator bottom supporting bucket (3) is arranged in an upward inclined manner; the steam pocket further comprises a water supply distribution device (1), a ladder-shaped corrugated plate separator (4), a cleaning pore plate (5), a porous plate (7) and a top corrugated plate separator (6), wherein the ladder-shaped corrugated plate separator (4) is arranged at the top of the large-diameter cyclone separator (2) and used for replacing a straight-barrel-shaped corrugated plate separator, the outer wall of the ladder-shaped corrugated plate separator (4) is a ladder-shaped barrel, and a small opening of the ladder-shaped corrugated plate separator (4) faces upwards and a large opening of the ladder-shaped corrugated plate separator faces downwards; the cleaning pore plate (5) is arranged on the inner wall of a pressure container cylinder (19) above the trapezoid corrugated plate separator (4), the water supply distribution device (1) is arranged on the inner wall of the pressure container cylinder (19) above the cleaning pore plate (5), the water supply distribution device (1) is used for distributing water to the cleaning pore plate (5), the top corrugated plate separator (6) and the porous plate (7) are sequentially fixed on the inner wall of the pressure container cylinder (19) above the water supply distribution device (1) from near to far, and the cleaning pore plate (5), the top corrugated plate separator (6) and the porous plate (7) are all distributed along the length direction of a sealing cavity in the pressure container cylinder (19); the periphery of the cleaning pore plate (5) is provided with overflow gates for preventing water from flowing laterally.

2. The steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasifier according to claim 1, wherein the large caliber of the ladder-shaped corrugated plate separator (4) is larger than the top caliber of the large-diameter cyclone separator (2), and the small caliber of the ladder-shaped corrugated plate separator (4) is smaller than or equal to the top caliber of the large-diameter cyclone separator (2).

3. The steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasification furnace according to any one of claims 1 to 2, characterized in that the cleaning orifice plate (5) and the perforated plate (7) are both plate-shaped structures with densely distributed through holes, and the aperture of the cleaning orifice plate (5) and the perforated plate (7) is 5-7 mm.

4. The steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasifier as claimed in claim 3, wherein the cleaning orifice plate (5), the top corrugated plate separator (6) and the perforated plate (7) are all connected with the inner wall of the pressure vessel cylinder (19) through a support frame.

Technical Field

The invention relates to a steam pocket structure for a high-efficiency energy-saving water-cooled wall direct-connected waste boiler total heat recovery gasification furnace, in particular to a steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace.

Background

The high-efficiency energy-saving water-cooling wall direct-connected waste boiler total heat recovery gasifier or the water-cooling wall direct-connected waste boiler total heat recovery gasifier can not only absorb sensible heat and latent heat of coal water slurry combustion, but also further absorb heat of high-temperature synthesis gas, realize 'total heat recovery' of gasifier heat, and can produce a large amount of high-temperature high-pressure steam as a byproduct. The recovered high-temperature high-pressure steam can be used for IGCC power generation and can also be used for steam for downstream production. Meanwhile, the load of the boiler can be reduced, a large amount of coal is saved, and the pollutant discharge caused by using the coal-fired boiler is reduced. Because the high-efficiency energy-saving water-cooling wall direct-connected waste boiler total heat recovery gasification furnace realizes the total heat recovery of the gasification furnace heat, the steam yield is increased by 20-30%, and meanwhile, the downstream production has higher requirements on the steam quality, namely the water content in the steam).

Disclosure of Invention

The invention aims to solve the technical problem that the existing steam pocket cannot meet the requirements of an efficient energy-saving water-cooled wall direct-connected waste boiler total heat recovery gasification furnace on the amount of processed steam and the quality of the steam, and provides a steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace.

The technical means for solving the technical problems of the invention is as follows: a steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace comprises a pressure vessel barrel, a large-diameter cyclone separator and a cyclone separator bottom supporting bucket, wherein the bottom surface of the cyclone separator bottom supporting bucket is arranged in an upward inclined mode; the steam pocket also comprises a water supply distribution device, a ladder-shaped corrugated plate separator, a cleaning pore plate, a porous plate and a top corrugated plate separator, wherein the ladder-shaped corrugated plate separator is arranged at the top of the large-diameter cyclone separator and used for replacing a straight-tube type corrugated plate separator; the cleaning pore plate is arranged on the inner wall of the pressure container cylinder above the trapezoid corrugated plate separator, the water supply distribution device is arranged on the inner wall of the pressure container cylinder above the cleaning pore plate and is used for distributing water to the cleaning pore plate, the top corrugated plate separator and the porous plate are sequentially fixed on the inner wall of the pressure container cylinder above the water supply distribution device from near to far, and the cleaning pore plate, the top corrugated plate separator and the porous plate are all distributed along the length direction of a sealing cavity in the pressure container cylinder; the periphery of the cleaning pore plate is provided with overflow gates for preventing water from flowing laterally.

The bottom surface of the supporting bucket at the bottom of the cyclone separator is arranged in an upward inclined manner, so that water flowing out of the bottom of the large-diameter cyclone separator is buffered through the upward inclined bottom surface of the supporting bucket at the bottom of the cyclone separator and flows down along the upward inclined bottom surface, the shaking of equipment caused by water flow impact can be reduced to the greatest extent, and the stability of the structure and the accuracy of monitoring the liquid level in the equipment are ensured; the trapezoidal corrugated plate separator is mainly used for uniformly distributing and leading out steam, eliminating the rotation of steam flow and further separating moisture, the outer wall of the trapezoidal corrugated plate separator is a trapezoidal cylinder body, so that the rising steam can be further prevented from contacting the trapezoidal cylinder body and then being condensed to flow down along the inner wall of the trapezoidal cylinder body, the steam treatment capacity is increased, the steam-water separation effect is good, the flow direction of the steam is frequently changed when the steam passes through a tortuous channel between corrugated plates in the trapezoidal corrugated plate separator, due to the inertia effect, the moisture contained in the steam is beaten on the corrugated plates and forms a continuous water film, the water film vertically flows downwards, the steam returns to a water chamber through the bottom surface of the support hopper at the bottom of the cyclone separator, and the steam flows out from the upper part of the trapezoidal corrugated plate separator. The separated steam continuously flows upwards to pass through the cleaning pore plate for steam cleaning, the feed water distribution device not only distributes feed water according to a preset part and mixes the feed water with furnace water to organize a reasonable working condition of the furnace water, but also distributes water for the cleaning pore plate to ensure that a continuous cleaning water layer is arranged on the cleaning pore plate, overflow gates arranged at the periphery of the cleaning pore plate can ensure that the cleaning water layer does not flow laterally, and the cleaning pore plate mainly has the function of enabling the steam to pass through a cleaner water layer or water mist to reduce salt carried by steam dissolution by utilizing the difference of the concentrations of the feed water and the furnace water, so that the overhigh salt content in the steam is prevented; compared with the existing steam drum in the background technology, the steam passing through the cleaning pore plate is equivalent to a third steam-water separation process. The cleaned steam continuously flows upwards to perform a fourth steam-water separation process in the top corrugated plate separator, the top corrugated plate separator mainly has the function of separating the steam by utilizing a corrugated rail of the corrugated plates, the flow direction of the steam is frequently changed when the steam passes through a zigzag channel between the corrugated plates, water contained in the steam is beaten on the corrugated plates due to the inertia effect and forms a continuous water film, the water film vertically flows downwards and returns to the water chamber, the steam flows out from the upper part of the top corrugated plate separator, and the separated steam continuously flows upwards to perform fifth steam-water separation in the porous plates. When steam passes through the perforated plate, because the throttling action of the perforated plate makes steam evenly distributed along the length and the width direction of the steam pocket, the local concentration of the steam is prevented, the rising speed of the steam is reduced, and the gravity separation is facilitated. The separated steam continuously flows upwards, is blocked by the baffle plate, finally enters the pipeline through the steam outlet, and is conveyed to a downstream production steam place through the pipeline.

Preferably, the large-opening diameter of the ladder-shaped corrugated plate separator is larger than the top diameter of the large-diameter cyclone separator, and the small-opening diameter of the ladder-shaped corrugated plate separator is smaller than or equal to the top diameter of the large-diameter cyclone separator, so that the steam treatment capacity of the ladder-shaped corrugated plate separator in unit time is guaranteed, and meanwhile, the steam flowing out of the large-diameter cyclone separator can be guaranteed to flow out after being treated by the ladder-shaped corrugated plate separator.

The invention has the beneficial effects that: the steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasification furnace ensures that the waste heat boiler and the convection evaporator of the waste heat recovery gasification furnace are conveniently connected with the high-efficiency energy-saving water-cooled wall direct-connected waste boiler total heat recovery gasification furnace, realizes the utilization of the waste heat recovery of the high-efficiency energy-saving water-cooled wall direct-connected waste boiler total heat recovery gasification furnace, and performs five separation processes on steam.

Drawings

Fig. 1 is a schematic view of an outer shell structure of a steam drum according to the background art of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the gasifier for water wall direct-connected waste boiler total heat recovery according to the present invention.

FIG. 3 is a schematic diagram of a cleaning aperture plate according to the present invention.

FIG. 4 is a schematic view of the structure of the multi-well plate according to the present invention.

In the figure: 1-a feed water distribution device, 2-a large-diameter cyclone separator, 3-a cyclone separator bottom supporting bucket, 4-a trapezoidal corrugated plate separator, 5-a cleaning pore plate, 6-a top corrugated plate separator, 7-a porous plate, 8-a baffle, 9-a driving steam device, 10-a dosing device, 11-an emergency water discharging device, 12-a sewage discharging device, 13-a water level gauge protection device, 14-an anti-vortex device, 15-a grid device, 16-a steam-water distribution device, 17-a pressure container end socket, 18-a manhole device, 19-a pressure container barrel, 20-a saddle, 21-a movable base and 22-a temperature measuring device.

Detailed Description

With reference to fig. 1, 2, 3 and 4, the steam pocket of the invention for the water wall direct-connected waste boiler total heat recovery gasification furnace is explained in detail.

A steam pocket for a water-cooled wall direct-connected waste boiler total heat recovery gasification furnace comprises a pressure vessel cylinder 19, a large-diameter cyclone separator 2 and a cyclone separator bottom supporting bucket 3, wherein the bottom surface of the cyclone separator bottom supporting bucket 3 is arranged in an upward inclined mode; the steam pocket also comprises a water supply distribution device 1, a ladder-shaped corrugated plate separator 4, a cleaning pore plate 5, a porous plate 7 and a top corrugated plate separator 6, wherein the ladder-shaped corrugated plate separator 4 is arranged at the top of the large-diameter cyclone separator 2 and used for replacing a straight-tube type corrugated plate separator, the outer wall of the ladder-shaped corrugated plate separator 4 is a ladder-shaped cylinder, and a small opening of the ladder-shaped corrugated plate separator 4 is arranged upwards and a large opening of the ladder-shaped corrugated plate separator 4 is arranged downwards; the cleaning pore plate 5 is arranged on the inner wall of a pressure container cylinder 19 above the trapezoid corrugated plate separator 4, the water supply distribution device 1 is arranged on the inner wall of the pressure container cylinder 19 above the cleaning pore plate 5, the water supply distribution device 1 is used for distributing water to the cleaning pore plate 5, the top corrugated plate separator 6 and the porous plate 7 are sequentially fixed on the inner wall of the pressure container cylinder 19 above the water supply distribution device 1 from near to far, and the cleaning pore plate 5, the top corrugated plate separator 6 and the porous plate 7 are all distributed along the length direction of a sealing cavity in the pressure container cylinder 19; the periphery of the cleaning pore plate 5 is provided with overflow gates for preventing water from flowing laterally.

The bottom surface of the supporting bucket 3 at the bottom of the cyclone separator is arranged in an upward inclined mode, so that water flowing out of the bottom of the large-diameter cyclone separator 2 is buffered through the upward inclined bottom surface of the supporting bucket 3 at the bottom of the cyclone separator, the water flows down along the upward inclined bottom surface, the shaking of the equipment caused by water flow impact can be reduced to the greatest extent, and the stability of the structure and the accuracy of monitoring the liquid level in the equipment are guaranteed; the ladder-shaped corrugated plate separator 4 mainly functions in uniformly distributing and leading out steam, eliminating the rotation of steam flow and further separating moisture, the outer wall of the ladder-shaped corrugated plate separator 4 is a ladder-shaped cylinder body, so that after rising steam is further ensured to contact with the ladder-shaped cylinder body, the rising steam is blocked by the ladder-shaped cylinder body and then condensed to flow down along the inner wall of the ladder-shaped corrugated plate separator, the steam treatment capacity is increased, the steam-water separation effect is good, the flow direction of the steam is frequently changed when the steam passes through a tortuous channel between the corrugated plates in the ladder-shaped corrugated plate separator 4, due to the inertia effect, the moisture contained in the steam is beaten on the corrugated plates, a continuous water film is formed, the water film vertically flows downwards, the water film returns to a water chamber through the bottom surface of the upward inclination of the supporting hopper 3 at the bottom of. The separated steam continuously flows upwards to pass through the cleaning pore plate 5 for steam cleaning, the feed water distribution device 1 is used for distributing feed water according to a preset part and mixing the feed water with furnace water so as to organize a reasonable working condition of the furnace water, and is also used for distributing water for the cleaning pore plate 5 so as to ensure that a continuous cleaning water layer is arranged on the cleaning pore plate 5, overflow gates arranged around the cleaning pore plate 5 can ensure that the cleaning water layer does not flow laterally, the cleaning pore plate 5 mainly has the function of enabling the steam to pass through a cleaner water layer or water mist, and the salt content carried by steam dissolution is reduced by utilizing the difference between the feed water and the concentration of the furnace water, so that the overhigh salt content in the steam is prevented; compared with the prior steam drum in the background art, the steam passing through the cleaning orifice 5 is equivalent to a third steam-water separation process. The cleaned steam continuously flows upwards to perform a fourth steam-water separation process in the top corrugated plate separator 6, the top corrugated plate separator 6 mainly has the function of separating the steam by utilizing the corrugated rails of the corrugated plates, the flow direction of the steam is frequently changed when the steam passes through the zigzag channels between the corrugated plates, water contained in the steam is beaten on the corrugated plates due to the inertia effect and forms continuous water films, the water films vertically flow downwards and return to the water chamber, the steam flows out from the upper part of the top corrugated plate separator 6, and the separated steam continuously flows upwards to perform fifth steam-water separation in the porous plate 7. When steam passes through the perforated plate 7, the steam is uniformly distributed along the length and the width direction of the steam pocket due to the throttling action of the perforated plate 7, so that the local concentration of the steam is prevented, the rising speed of the steam is reduced, and the gravity separation is facilitated. The separated steam continues to flow upwards, is blocked by the baffle 8, finally enters the pipeline through the steam outlet and is conveyed to a downstream process steam place by the pipeline.

Further, as a specific embodiment of the steam pocket for the water-cooled wall direct-connection waste boiler total heat recovery gasifier, the diameter of the large opening of the ladder-shaped corrugated plate separator 4 is larger than the diameter of the top of the large-diameter cyclone separator 2, and the diameter of the small opening of the ladder-shaped corrugated plate separator 4 is smaller than or equal to the diameter of the top of the large-diameter cyclone separator 2, so that the steam handling capacity of the ladder-shaped corrugated plate separator 4 in unit time is guaranteed, and meanwhile, the steam flowing out of the large-diameter cyclone separator 2 can be guaranteed to flow out after being treated by the ladder-shaped corrugated plate separator 4.

Further, as a specific embodiment of the steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasifier, the cleaning orifice plate (5) and the perforated plate (7) are both plate-shaped structures with densely distributed through holes, and as shown in fig. 3 and 4, the aperture of the cleaning orifice plate 5 and the aperture of the perforated plate 7 are 5-7 mm.

Further, as a specific embodiment of the steam pocket for the water-cooled wall direct-connected waste boiler total heat recovery gasification furnace, the cleaning pore plate 5, the top corrugated plate separator 6 and the porous plate 7 are all connected with the inner wall of the pressure vessel cylinder 19 through the support frame.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.