阅读说明：本技术 具有煤气均流装置的喷淋塔 (Spray tower with gas flow equalizing device ) 是由 张瑶 钟渝 陶迎 陈敏 谢建 于 2020-06-23 设计创作，主要内容包括：本发明提供一种具有煤气均流装置的喷淋塔,包括喷淋塔,喷淋塔下部设置有煤气入口,喷淋塔顶部设置有煤气出口,还包括圆形导流筒和位于圆形导流筒上方的锥形导流筒,所述圆形导流筒与喷淋塔的塔壁之间形成环形均流区,煤气入口开设在环形均流区对应的喷淋塔塔壁上,所述锥形导流筒位于圆形导流筒的上方,该锥形导流筒上端的直径大于下端的直径,且锥形导流筒下端与圆形导流筒之间有间隙。本发明,煤气进入喷淋塔塔体,在圆形导流筒的均流作用下,只能从间隙进入喷淋区。圆形导流筒、锥形导流筒起到缓冲和均流效果,使得煤气在塔体喷淋区更加均匀,且来流变化对均流影响小,有效解决煤气在水平方向上的均流问题。(The invention provides a spray tower with a gas flow equalizing device, which comprises a spray tower, wherein a gas inlet is arranged at the lower part of the spray tower, a gas outlet is arranged at the top of the spray tower, the spray tower also comprises a circular guide cylinder and a conical guide cylinder positioned above the circular guide cylinder, an annular flow equalizing area is formed between the circular guide cylinder and the tower wall of the spray tower, the gas inlet is arranged on the tower wall of the spray tower corresponding to the annular flow equalizing area, the conical guide cylinder is positioned above the circular guide cylinder, the diameter of the upper end of the conical guide cylinder is larger than that of the lower end of the conical guide cylinder, and a gap is formed between the lower end of the conical guide cylinder and the. According to the invention, coal gas enters the spray tower body and can only enter the spray area from the gap under the flow equalizing effect of the circular guide cylinder. Circular draft tube, toper draft tube play buffering and flow equalizing effect for coal gas is more even in the tower body spray area, and the incoming flow change influences flow equalizing for a short time, effectively solves the problem of flow equalizing of coal gas on the horizontal direction.)

1. The utility model provides a spray column with coal gas flow straightener, includes the spray column, the spray column lower part is provided with the coal gas entry, and the spray column top is provided with coal gas export, its characterized in that: the coal gas flow equalizing device comprises a circular guide cylinder and a conical guide cylinder positioned above the circular guide cylinder, the inner cavity of the circular guide cylinder is axially sealed, an annular flow equalizing zone is formed between the side wall of the circular guide cylinder and the tower wall of the spray tower, a coal gas inlet is arranged on the tower wall of the spray tower corresponding to the annular flow equalizing zone, the diameter of the upper end of the conical guide cylinder is larger than that of the lower end of the conical guide cylinder, and a gap is reserved between the lower end of the conical guide cylinder and the circular guide cylinder; and after entering the annular flow-equalizing zone through the gas inlet, the gas enters the spraying zone above the conical guide cylinder from the gap.

2. The spray tower with a gas flow straightener of claim 1, characterized in that: a flow equalizing plate is further arranged above the conical guide cylinder in the spray tower, and a plurality of flow equalizing holes are formed in the flow equalizing plate.

3. The spray tower with a gas flow straightener of claim 1, characterized in that: the upper end of the circular draft tube is sealed by a conical cover, and the diameter of the conical cover is gradually increased from top to bottom.

4. The spray tower with a gas flow straightener of claim 1, characterized in that: the upper end of the conical guide cylinder is sealed with the tower wall of the spray tower, and a buffer area is formed between the outer wall of the conical guide cylinder and the tower wall of the spray tower.

5. The spray tower with a gas flow straightener of claim 1, characterized in that: the coal gas flow equalizing device further comprises a baffle plate connected between the circular guide cylinder and the conical guide cylinder, and the baffle plate is opposite to the coal gas inlet in the circumferential direction of the circular guide cylinder.

6. The spray tower with a gas flow straightener of claim 1, characterized in that: the conical guide cylinder is connected with the circular guide cylinder through a plurality of connecting plates, one of the conical guide cylinder and the circular guide cylinder is opposite to the coal gas inlet in the circumferential direction, and circumferential spaced circular seams are formed between the conical guide cylinder and the circular guide cylinder.

7. The spray tower with a gas flow straightener of claim 1, characterized in that: the diameter of the lower end of the conical guide cylinder is larger than that of the circular guide cylinder, and gaps are formed between the conical guide cylinder and the circular guide cylinder in the vertical direction and the radial direction.

8. The spray tower with a gas flow straightener of claim 1, characterized in that: the circular guide cylinder is arranged on the spray tower through a support frame, and the conical guide cylinder is directly arranged on the spray tower or supported on the circular guide cylinder.

9. The spray tower with a gas flow straightener of claim 8, characterized in that: the support frame includes the supporting leg and installs the crossbeam on the supporting leg, crossbeam and circular draft tube inner wall connection, the supporting leg supports the bottom at the spray column, there is the interval between circular draft tube lower extreme and the spray column bottom.

10. The spray tower with a gas flow straightener of claim 9, characterized in that: the conical guide cylinder is connected with the tower wall of the spray tower through an auxiliary support.

11. The spray tower with a gas flow straightener of claim 3, characterized in that: the conical guide cylinder and the circular guide cylinder are made of duplex stainless steel, and the conical cover is made of duplex stainless steel, glass or corrosion-resistant plastic.

12. The spray tower with a gas flow equalizing device according to any one of claims 1 to 11, wherein: the gas inlets are arranged along the circumferential direction of the spray tower at one to a plurality of positions, and the upper end of the circular guide cylinder is higher than the gas inlets.

Technical Field

The invention belongs to the technical field of gas dust removal, and particularly relates to a spray tower with a gas flow equalizing device.

Background

Because the full-dry type cloth bag dust removal has the advantages of energy conservation, environmental protection, good dust removal efficiency and the like, more and more blast furnace gas purification processes begin to adopt the dust removal mode. However, the problems associated with this process are also significant and common: when the temperature is reduced, acidic components in the clean gas after dust removal are separated out, and the clean gas is seriously corroded or even penetrates through a gas pipe network and equipment in a short time, so that safety accidents such as gas leakage and the like are caused, and the normal operation of blast furnace production is seriously influenced.

The spray tower deacidification process is a method for removing acid which is mostly applied in the current project, but the phenomena of uneven contact surface between coal gas and spray water, short local contact time and the like are caused by uneven gas flow distribution, flow field disorder, overhigh local flow velocity and the like caused by large gas flow entering the spray tower, so that the deacidification and washing effect is greatly influenced. Therefore, it is necessary to research a spray tower flow equalizing device with simple structure, durability, low price and good flow equalizing effect. In the prior art, in order to improve the uniformity of flue gas distribution, a guide plate is generally adopted in the flue gas spraying aspect, and the guide plate is tangent to the gas flowing direction in a straight flue connected with a bend. The flow equalizing plates which are not equidistant, vertical and in trapezoidal distribution are added at the top, so that a certain flow equalizing problem can be solved. However, the arrangement of the flow equalizing plate is closely related to incoming flow, and can only ensure that the flow equalizing plate can play a good flow equalizing role at a specific flow rate.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a spray tower with a gas flow equalizing device, which is insensitive to incoming flow and has a good flow equalizing effect.

In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:

a spray tower with a gas flow equalizing device comprises a spray tower, wherein a gas inlet is formed in the lower portion of the spray tower, a gas outlet is formed in the top of the spray tower, the gas flow equalizing device is arranged on the lower portion of the spray tower and comprises a circular guide cylinder and a conical guide cylinder located above the circular guide cylinder, the inner cavity of the circular guide cylinder is axially closed, an annular flow equalizing area is formed between the side wall of the circular guide cylinder and the tower wall of the spray tower, the gas inlet is formed in the tower wall of the spray tower corresponding to the annular flow equalizing area, the diameter of the upper end of the conical guide cylinder is larger than that of the lower end of the conical guide cylinder, and a gap is formed between the lower end of the conical guide cylinder and the circular guide cylinder; and after entering the annular flow-equalizing zone through the gas inlet, the gas enters the spraying zone above the conical guide cylinder from the gap.

By adopting the structure, the coal gas enters the tower body of the spray tower and can only enter the spray area from the gap under the flow equalizing action of the circular guide cylinder. The conical guide cylinder has a guide function and is beneficial to downward discharge of spray liquid. Annular space between circular draft tube and the tower wall and space between toper draft tube and the tower wall play buffering and flow equalizing effect for coal gas is more even in the district that sprays of tower body, and the incoming flow change influences the flow equalizing for a short time, effectively solves the problem of flow equalizing of coal gas on the horizontal direction.

Optionally, a flow equalizing plate is further arranged above the conical guide cylinder in the spray tower, and a plurality of flow equalizing holes are formed in the flow equalizing plate. The flow equalizing plate is added in the area above the conical guide cylinder, and the flow equalizing effect is achieved by increasing the local resistance loss.

Optionally, the upper end of the circular guide shell is sealed by a conical cover, and the diameter of the conical cover is gradually increased from top to bottom.

Optionally, a space between the upper end of the conical guide cylinder and the tower wall of the spray tower is sealed, and a buffer area is formed between the outer wall of the conical guide cylinder and the tower wall of the spray tower.

Optionally, the gas flow equalizing device further comprises a baffle plate connected between the circular guide cylinder and the conical guide cylinder, and the baffle plate is opposite to the gas inlet in the circumferential direction of the circular guide cylinder.

Optionally, the conical guide cylinder and the circular guide cylinder are connected through a plurality of connecting plates, one of the conical guide cylinder and the circular guide cylinder is opposite to the gas inlet in the circumferential direction of the circular guide cylinder, and circumferential spaced circular seams are formed between the conical guide cylinder and the circular guide cylinder.

Optionally, the diameter of the lower end of the conical guide cylinder is larger than that of the circular guide cylinder, and a gap is formed between the conical guide cylinder and the circular guide cylinder in the vertical direction and the radial direction.

Optionally, the circular guide cylinder is mounted on the spray tower through a support frame, and the conical guide cylinder is directly mounted on the spray tower or supported on the circular guide cylinder.

Optionally, the support frame includes the supporting leg and installs the crossbeam on the supporting leg, crossbeam and circular draft tube inner wall connection, the supporting leg supports in the bottom of spray column, there is the interval between circular draft tube lower extreme and the spray column bottom.

Optionally, the conical guide cylinder is connected with the tower wall of the spray tower through an auxiliary bracket.

Optionally, the conical guide shell and the circular guide shell are made of duplex stainless steel, and the conical cover is made of duplex stainless steel, glass or corrosion-resistant plastic.

Optionally, the gas inlets are arranged in one or more circumferential directions of the spray tower, and the upper end of the circular guide shell is higher than the gas inlets.

As mentioned above, the beneficial effects of the invention are: according to the invention, coal gas enters the spray tower body and can only enter the spray area from the gap under the flow equalizing effect of the circular guide cylinder. The conical guide cylinder has a guide function and is beneficial to downward discharge of spray liquid. Annular space between circular draft tube and the tower wall and space between toper draft tube and the tower wall play buffering and flow equalizing effect for coal gas is more even in the district that sprays of tower body, and the incoming flow change influences the flow equalizing for a short time, effectively solves the problem of flow equalizing of coal gas on the horizontal direction.

Drawings

FIG. 1 is a schematic structural view (perspective view) of an embodiment of the present invention;

FIG. 2 is a front view of the gas flow equalizer of the present invention (with part of the connecting plate omitted);

FIG. 3 is a bottom view of FIG. 2;

FIG. 4 is a perspective view of the gas flow straightener of the present invention;

FIG. 5 is a simulated flow diagram of a prior art spray tower;

fig. 6 is a simulated flow diagram of a spray tower of the present invention.

Part number description:

1-a spray tower; 11-gas inlet; 12-gas outlet; 21-a circular guide shell; 22-a conical draft tube; 23-flow equalizing plate; 24-a conical shroud; 25-clearance; 26-a connecting plate; 27-support legs; 28-a cross beam; 29-auxiliary support.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.