CN217265573U

CN217265573U - Water inlet injection system of chilling ring of gasification furnace

Info

Publication number: CN217265573U
Application number: CN202121232426.1U
Authority: CN
Inventors: 王晓伟; 崔史伟; 严新超; 谢磊; 刘会; 王鹏伟
Original assignee: Shaanxi Xinli Injector R&d Co ltd
Current assignee: Shaanxi Xinli Injector R&d Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-08-23
Anticipated expiration: 2031-06-03

Abstract

The utility model provides a water inlet injection system of a chilling ring of a gasification furnace, which comprises a drainage tube and a chilling ring which are connected in sequence, wherein the number of water inlet tubes of the chilling ring is doubled; the drainage tube is modified into a split water guiding tube which is divided into two parts; the number of the chilling ring jet holes is doubled; the angle of the jet hole is optimized and adjusted, so that the impact of water flow on the water ring is effectively reduced. The utility model has the advantages that: through the transformation of the chilling ring water inlet injection system, the chilling ring water inlet is more uniform, the water flow is injected into the downcomer to form a more uniform water film, the risk of water pipe blockage is reduced, the jet flow speed injection force is controlled in the optimal state, the normal rotational flow is ensured to form the water film, the jet flow speed is reduced to the maximum extent, the scouring force is reduced, and the service life of the whole chilling system is prolonged.

Description

Water inlet injection system of chilling ring of gasification furnace

Technical Field

The utility model relates to a coal chemical industry gasifier technical field, concretely relates to water injection system of gasifier chilling ring.

Background

The chilling ring is connected between the combustion chamber and the chilling chamber of the gasification furnace as shown in figures 1 and 2 and is a necessary passage for high-temperature slag and water gas in the gasification furnace, the mixture of the gas and the slag fully contacts with chilling water at the lower part of the furnace body to finish the chilling process, and the water gas and the slag are separated. The chilling ring is connected with a down pipe below, and plays an important role as a key component of the gasification furnace. As shown in figure 3, black water enters the water distribution flange water chamber through the water inlet pipe, flows into the water ring through the spraying inclined hole, flows out from the annular gap between the water ring and the descending short pipe through the water tongue, and forms a layer of water film on the inner wall of the descending pipe, thereby playing a role in protecting the descending pipe.

Four groups of water inlet pipes are arranged aiming at the chilling ring of a part of factory gasification furnaces, as shown in figure 4, after the chilling ring is used for a period of time, because the chilling ash water ash and slag are deposited, the chilling ring is relatively far away from the water inlet pipe and the area with low flow velocity is shown in figure 3, and as shown in figure 3, the situations of slag blocking easily occur in the annular flow passage of the water diversion flange of the chilling ring, the spray hole and the C-shaped flow passage of the cooling water ring. The uneven water outlet of the chilling ring can be caused after the slag is blocked, the water film forming of the inner wall of the descending pipe is poor, partial area is lack of water or no water further causes dry burning bulge of the descending pipe, the cooling effect of the chilling system is poor, the temperature of the whole slag hole area is increased, and therefore the running risk of the whole system is large, and the service life of the whole system is prolonged. In addition, once the quench ring is blocked, the water flow passing cross section area is reduced, the flow velocity is increased, the washing of the quench ring water ring and the flange base metal at the injection hole part is also increased, and the service life of the quench ring is greatly shortened.

Therefore, solving the problems of blockage and erosion and abrasion of the water flow to the spray holes of the chilling ring and the water ring becomes a key factor for prolonging the service life of the whole chilling system.

Disclosure of Invention

The utility model aims at providing a water injection system of gasifier chilling ring that intakes water evenly, reduces to block up, reduces chilling ring wearing and tearing, increase of service life.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a water inlet injection system of a chilling ring of a gasification furnace comprises a combustion chamber and the chilling chamber, wherein high-temperature slag and water gas after being combusted in the combustion chamber are fully contacted and cooled by chilling water injected from the chilling ring of the chilling chamber, and fall and deposit along a descending pipe connected with the chilling ring. The utility model provides a water injection system of intaking is including consecutive drainage tube and chilling ring, the quantity of chilling ring inlet tube doubles the setting, eight groups or twelve groups inlet tube are connected to the chilling ring and the injection of intaking in chilling ring department to four groups or six groups chilling ring inlet tube quantity that set up with the tradition doubles, make to intake more even.

Furthermore, on the premise of not changing the water inlet direction of the original furnace body, the drainage tube is modified into a split water guide tube, so that water inlet is more uniform.

Further, in order to ensure that water flow uniformly passes through the C-shaped flow channel of the water ring, the spraying holes of the chilling ring are 72 holes or 96 holes, so that the number of the spraying holes of 36 holes or 48 holes which are conventionally arranged is doubled, the water flow is more uniform, and the blocking risk is reduced; and the angle of the jet hole is optimally adjusted, so that the scouring abrasion to the water ring is reduced.

Furthermore, the number of the jet holes is doubled, the jet hole diameter is measured and calculated again, the jet flow speed and the jet force are controlled within a reasonable range, normal rotational flow is guaranteed to form a water film, the jet flow speed is reduced to the maximum extent, and the scouring force is reduced.

Compared with the prior art, the utility model, have following advantage:

the utility model relates to a water injection system that intakes of gasifier chilling ring through the transformation to chilling ring water injection system for chilling ring is intake more evenly, and water jet gets into the downcomer and forms more even water film, reduces the water pipe and blocks up the risk, and the fast jet force of control jet flow both guarantees normal whirl formation water film at the optimum, and the while also furthest reduces the jet flow speed, reduces and erodes the power, thereby has prolonged the life of whole chilling system.

Drawings

Fig. 1 is a schematic view of the overall structure of a gasification furnace according to the prior art.

Fig. 2 is a partial structural schematic view of a gasification furnace in the prior art.

FIG. 3 is a schematic longitudinal cross-sectional view of a prior art quench chamber quench ring region.

FIG. 4 is a cross-sectional schematic view of a prior art quench chamber quench ring region.

Fig. 5 is a schematic diagram of the improved structure of the water inlet pipe of the present invention.

Fig. 6 is a schematic view of the injection angle optimization of the water inlet pipe diversion conduit of the present invention.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

A water inlet injection system of a chilling ring of a gasification furnace is characterized in that four groups of drainage tubes 2 are connected to the chilling ring 1 of a chilling chamber, as shown in figure 5, each drainage tube 2 is divided into two paths of shunt water guide tubes 3, namely, water is fed into the chilling ring 1 through eight shunt water guide tubes 3 which are equally distributed, and the water inlet uniformity is guaranteed. The flow dividing water guide pipe 3 enters the chilling ring 1 through the water dividing flange annular flow passage 4, and water flow is sprayed from a spray hole 5 of the chilling ring 1. The spray holes of the chilling ring 1 are 72 holes, so that water flow is more uniform, and the blocking risk is reduced. Further, the angle of the injection hole is optimally adjusted, as shown in fig. 6, the water flow impulse force F1 of the injection hole is constant under the same working condition, and F1 can be decomposed into the impulse force F to the water ring along the radial direction according to the force triangle law _{Diameter of pipe} And a force F pushing the swirl in the tangential direction _{Cutting machine} By properly adjusting the angle theta of the spray hole, the impact force on the water ring can be effectively reduced, the scouring of water flow on the chilling ring 1 and the matrix material of the spray hole is reduced, and the service life of the chilling ring 1 is prolonged

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be regarded as within the protection scope of the present invention.

Claims

1. The utility model provides a gasifier chilling ring's injection system of intaking, includes consecutive drainage tube and chilling ring, its characterized in that: four groups of draft tubes are connected to the chilling ring, the draft tubes are modified into split water guide tubes which are divided into two parts, and jet holes of the chilling ring are 72 holes.