A kind of chilling ring of gasifying furnace
Technical field
The invention belongs to coal water slurry gasification technical field, be specifically related to a kind of coal slurry gasifier chilling ring.
Background technology
Vapourizing furnace is the nucleus equipment of coal water slurry gasification technology; and chilling ring is the core component of vapourizing furnace; in equipment running process, chilling ring is in the severe environment in the circulation Heisui River of the high-temperature technology gas of 1250 ~ 1350 ° and the slag of molten state and 230 ~ 250 °; its objective is the moisture film forming Rotating with Uniform at downtake internal surface; carry out Quench to the slag of high-temperature synthesis gas and molten state, protection downtake is not damaged.In vapourizing furnace normally runs, chilling ring outer lip ring internal-external temperature difference is larger, constantly subject larger thermal stresses, hot environment more complicated outside outer lip ring, and in chilled water, solid content is higher, erosive wear is serious, the hole that after running for some time, outer lip ring surface produces many thermal cracks and washes away, impact forms uniform moisture film, easily makes downtake local superheating, distortion, the easy dross of downtake, blocks downtake and causes stopping, affect the normal operation of device time serious.And nozzle bore in use for some time, nozzle bore can wash away distortion, affects water (flow) direction, also can accelerate washing away of outer lip ring.The normal operation cycle directly affecting vapourizing furnace work-ing life of chilling ring.
In existing chilling ring structure, chilled water outer lip ring is a doughnut-shaped monolithic, and nozzle ring and water cavity outer shroud, annular epipharynx ring and water cavity inner ring are all processed by solid forging.If when chilling ring epipharynx ring damage comparison is serious, cannot fast in internal repair, when nozzle bore washes away serious, whole chilling ring will be scrapped, and have a strong impact on the steady running of vapourizing furnace, too increase working cost.Therefore how to extend the work-ing life of chilling ring and fast the chilling ring damaged repaired, the stable of device and economical operation are become particularly important.
Summary of the invention
The present invention aims to provide the chilling ring of gasifying furnace after a kind of improvement, can extend the work-ing life of chilling ring, and it is convenient to change and repair, and improves the utilization ratio of material, reduces maintenance cost.
For achieving the above object, the technical solution used in the present invention is:
A kind of chilling ring of gasifying furnace, it is characterized in that, described chilling ring of gasifying furnace comprises outer lip ring (1), epipharynx ring (2), nozzle ring (4), water cavity inner ring (5) and water cavity outer shroud (6), and water cavity base plate (7), chilled water transfer lime (9) and downtake (10), above-mentioned parts are by being welded to connect, wherein epipharynx ring (2) and outer lip ring (1) form chilled water distributing chamber (3), water cavity inner ring (5), water cavity outer shroud (6), nozzle ring (4) and water cavity base plate (7) form water cavity (8), chilled water distributing chamber (3) is connected by the nozzle bore on nozzle ring (4) with water cavity (8), chilled water transfer lime (9) is connected with water cavity (8), water cavity inner ring (5) is fixedly connected with downtake (10), chilled water annular space is formed between outer lip ring (1) and downtake (10).
In described chilling ring of gasifying furnace, outer lip ring and nozzle ring are by being welded to connect.The outer lip ring of annular is preferably three-chip type separate piece, more preferably thickeies at the jet direction place material of nozzle ring.
In described chilling ring of gasifying furnace, epipharynx ring is domain separate piece, with nozzle ring by being welded to connect.
In described chilling ring of gasifying furnace, nozzle ring is domain separate piece, with water cavity outer shroud by being welded to connect.
Described nozzle ring is uniform-distribution with one group of nozzle bore in a circumferential direction, forms the angle of certain angle at circumferential direction nozzle bore axis and radius, has the elevation angle of 5 ° ~ 10 ° in jet direction upper spray nozzle hole.
Described chilling ring of gasifying furnace, water cavity outer shroud is domain separate piece, is uniform-distribution with one group of flushing port in a circumferential direction, and is furnished with plug, consistent with nozzle bore in the angle of circumferential direction flushing port, and with nozzle bore one_to_one corresponding; Flushing port radial without the elevation angle.
In described chilling ring of gasifying furnace structure, water cavity inner ring is domain separate piece, with nozzle ring by being welded to connect.
Described chilling ring of gasifying furnace, preferred water cavity base plate is uniformly distributed 4 chilled water transfer limes in a circumferential direction, and vertical with water cavity base plate.
The invention has the beneficial effects as follows: chilling ring of gasifying furnace of the present invention, outer lip ring adopts three-chip type separate piece to substitute annular one-piece construction, and thicken at the jet direction of nozzle bore, and change epipharynx ring, nozzle ring, water cavity outer shroud and water cavity inner ring into separate piece, connect to form chilling ring by welding process, rapid wear assembly can be changed separately, assembly welding is convenient, spot replace and easy to maintenance, can extend chilling ring work-ing life, improve material use efficiency, save servicing time and expense.Advantage of the present invention specifically comprises:
1) chilling ring of existing structure is when outer lip ring damages, mostly whole chilling ring and downtake need be removed, change outer lip ring outward at stove or change overall chilling ring, change and need 8 to 10 days, repair time is long, recondition expense is high, and also usually because nozzle bore, outer lip ring wash away seriously, whole chilling ring is scrapped.Because the outer lip ring of chilling ring is divided into 3 parts according to certain angle by the present invention in a circumferential direction, in vapourizing furnace, directly can weld replacing easily, only need 2 to 3 days, greatly save repair time and recondition expense.
2) right on of nozzle bore is that outer lip ring washes away the most serious place, thickeies, add material and wash away surplus, extend work-ing life at the jet right on thickness of nozzle bore.
3) nozzle ring, water cavity inner ring, epipharynx ring, water cavity outer shroud are processed separately as separate piece by the present invention.Easy-abrasion part, as epipharynx ring, nozzle ring damage time can change separately, and water cavity inner ring and water cavity outer shroud general scour smaller, without the need to change, can be recycled.Rehabilitation expense reduces greatly, also effectively raises the utilization ratio of material.
Describe the present invention below in conjunction with specific embodiment.Protection scope of the present invention is not limited with embodiment, but is limited by claim.
Accompanying drawing explanation
Fig. 1 is the sectional view of chilling ring of gasifying furnace in prior art.
Fig. 2 is the sectional view of chilling ring of gasifying furnace of the present invention.
Fig. 3 is nozzle ring structural representation in chilling ring of gasifying furnace of the present invention.
Fig. 4 is the schematic diagram of dissecting of outer lip ring in chilling ring of gasifying furnace of the present invention.
Embodiment
In the prior art, as shown in Figure 1, epipharynx ring wherein and water cavity inner ring, nozzle ring and water cavity outer shroud are single piece to the structure of typical chilling ring of gasifying furnace, and outer lip ring thickness is even.According to chilling ring of gasifying furnace of the present invention, its structure as shown in Figure 2,3, 4.
Chilling ring of gasifying furnace after a kind of improvement, comprise outer lip ring 1, epipharynx ring 2, nozzle ring 4, water cavity inner ring 5, water cavity outer shroud 6, and water cavity base plate 7, downtake 10 and chilled water transfer lime 9, epipharynx ring 2 and outer lip ring 1 form chilled water distributing chamber 3, water cavity inner ring 5, nozzle ring 4, water cavity outer shroud 6 and water cavity base plate 7 form water cavity 8, chilled water transfer lime 9 communicates with water cavity 8, chilled water distributing chamber 3, above-mentioned each parts by being welded to connect, the chilling ring of gasifying furnace described in formation.
Chilled water is from chilled water transfer lime 9, and chilling ring of gasifying furnace of the present invention, water cavity base plate 7 is uniformly distributed 4 chilled water transfer limes 9 in a circumferential direction, and vertical with water cavity base plate 7.
Water cavity inner ring 5 and downtake 10 are welded to connect, and between the outer lip ring 1 and downtake 10 of chilling ring of gasifying furnace, form chilled water annular space, chilled water distributing chamber 3 is connected by the nozzle bore on nozzle ring 4 with water cavity 8.This structure can make chilled water tangentially enter chilled water distributing chamber 3, forms the moisture film of Rotating with Uniform in downtake 10, protection downtake 10.
The chilling ring of gasifying furnace of the present embodiment, its outer lip ring 1 thickeies at the right on thickness of the jet of nozzle ring 4, what add material washes away surplus, effectively extend work-ing life, and when making according to Fig. 4, make 3 chips, can change in stove very easily, the repair time is short, expense is low.
The chilling ring of gasifying furnace of the present embodiment, its nozzle ring structure as shown in Figure 3, be uniform-distribution with one group of nozzle bore in a circumferential direction, form the angle of certain angle at circumferential direction nozzle bore axis and radius, have the elevation angle of 5 ° ~ 10 ° in jet direction upper spray nozzle hole.
The nozzle bore of chilling ring is also the position of easily wearing and tearing, in the present embodiment chilling ring of gasifying furnace, nozzle ring 4, water cavity inner ring 5, water cavity outer shroud 6 are processed as separate piece, and the nozzle bore of nozzle ring 4 is suitably expanded according to behaviour in service, chilled water flow velocity can be effectively reduced, reduce washing away of nozzle ring 4 spout and outer lip ring 1, extend service life of equipment.
Run by the early stage of chilling ring of gasifying furnace, outer lip ring 1, epipharynx ring 2, nozzle ring 4 nozzle bore are districts easy to wear, in operation, after more than 8000 hour, outer lip ring 1 is with regard to frequently appearance is worn out usually for equipment, and the reparation of outer lip ring 1 is in mainly worn out place REPAIR WELDING use in stove in early stage.When serious wear, change three-chip type outer lip ring 1 in stove, chilling ring continuous duration of service was more than 16000 hours.Along with the continuation of equipment operation time increases, epipharynx ring 2 and nozzle bore wash away distortion, cause current break-in, washing away district and changing thereupon of outer lip ring 1, affects the work-ing life of outer lip ring 1, now needs chilling ring overall pulling down, again working nozzle ring 4, epipharynx ring 2, outer lip ring 1, and remaining part is smaller owing to washing away, can recycle, very large spare part expense can be saved.
This embodiment, by improving original chilling ring of gasifying furnace, effectively extends the work-ing life of outer lip ring, improves the utilization ratio of chilling ring portion of material, saves spare part expense, easy to maintenance, economical.