阅读说明：本技术 一种延迟焦化焦炭塔塔顶废气收集系统及方法 (System and method for collecting waste gas at tower top of delayed coking coke tower ) 是由 朱俊杰 毛磊 吴蒙 胡炳焱 叶威 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种延迟焦化焦炭塔塔顶废气收集系统及方法。在焦炭塔(1)的顶盖(2)上设置半球形集气罩,所述半球形集气罩包括外密封布(4),所述外密封布(4)外设置一排支架(5),所述外密封布(4)与每根支架(5)通过锚固钉(9)连接；所述支架(5)的中间设置转动轴(11),每根支架(5)末端呈圆环形状穿束且并排焊接在转动轴(11)一端,所述转动轴(11)的另一外部端连接电动控制器(6)；所述支架(5)的底部固定连接固定底座(7),并由外密封布(4)密封,固定底座(7)上方的外密封布(4)开有抽风口(8)。本发明的设备简单,密封性好,操作简单,造价低,适用性强,适合国内石化延迟焦化塔顶部的尾气控制。(The invention discloses a system and a method for collecting waste gas at the top of a delayed coking coke tower. A hemispherical gas collecting hood is arranged on a top cover (2) of a coke tower (1), the hemispherical gas collecting hood comprises an outer sealing cloth (4), a row of brackets (5) are arranged outside the outer sealing cloth (4), and the outer sealing cloth (4) is connected with each bracket (5) through an anchoring nail (9); a rotating shaft (11) is arranged in the middle of each support (5), the tail end of each support (5) is in a circular ring shape and is welded at one end of the rotating shaft (11) side by side, and the other outer end of the rotating shaft (11) is connected with an electric controller (6); the bottom of the support (5) is fixedly connected with a fixed base (7) and sealed by an outer sealing cloth (4), and an air suction opening (8) is formed in the outer sealing cloth (4) above the fixed base (7). The device has the advantages of simple equipment, good sealing performance, simple operation, low manufacturing cost and strong applicability, and is suitable for controlling the tail gas at the top of the petrochemical delayed coking tower in China.)

1. A delayed coking coke tower top waste gas collecting system is characterized in that a hemispherical gas collecting hood is arranged on a top cover (2) of a coke tower (1), the hemispherical gas collecting hood comprises outer sealing cloth (4), a row of supports (5) are arranged outside the outer sealing cloth (4), and the outer sealing cloth (4) is connected with each support (5) through anchoring nails (9); a rotating shaft (11) is arranged in the middle of each support (5), the tail end of each support (5) is in a circular ring shape and is welded at one end of the rotating shaft (11) side by side, and the other outer end of the rotating shaft (11) is connected with an electric controller (6); the bottom of the support (5) is fixedly connected with a fixed base (7) and sealed by an outer sealing cloth (4), and an air suction opening (8) is formed in the outer sealing cloth (4) above the fixed base (7).

2. A delayed coking coke drum overhead waste gas collection system according to claim 1, characterized in that the suction opening (8) is connected to a header, which is connected to a fan; the fan is a variable frequency fan.

3. The system for collecting the waste gas at the top of the delayed coking coke drum according to the claim 1, characterized in that the top of the coke drum (1) is provided with an inner sealing cloth (10), and the inner sealing cloth (10) and the outer sealing cloth (4) are jointed to form a sector area; the inner sealing cloth (10) and the outer sealing cloth form two axillary angles in the fan-shaped area; the inner sealing cloth (10) is attached to the outer wall of the coke tower (1) according to the shape of the top of the coke tower (1), and the two axillary angle sectors are lower than the top cover (2) of the coke tower (1) for sealing.

4. A delayed coking coke drum overhead off-gas collection system according to claim 1, characterized by a hose support (3) above the coke drum (1); the hose supporting device (3) is electrically connected with the electric controller (6).

5. A delayed coking coke drum overhead gas collection process employing the system of any of claims 1 to 4, characterized by the steps of:

step 1: after the coke tower (1) reacts, the coke tower is cooled to open the top cover (2), the electric controller (6) controls the rotating shaft (11) to rotate, the supports (5) connected with the rotating shaft (11) are turned over and opened, each support (5) is opened one by one, the folding outer sealing cloth (4) is driven to extend until the gas collecting hood is completely opened, and the top of the coke tower (1) is sealed;

step 2: tail gas of the coke tower (1) enters a negative pressure gas collecting hood, a fan connected with a gas collecting pipe performs air suction, and the tail gas is sent to a tail gas treatment device through a pipeline;

and step 3: after the coke tower (1) is cooled down, the gas collecting hood controls the rotating shaft (11) through the electric controller (6) to further drive the connected bracket (5) to turn over and restore to an initial folding state, the unfolded outer sealing cloth (4) is driven to fold and furl, and the hydraulic decoking equipment on the water hose supporting device (3) downwards covers the coke tower (1) to perform hydraulic decoking treatment.

Technical Field

The invention belongs to the technical field of unorganized emission control of atmospheric pollutants, and particularly relates to a system and a method for collecting waste gas at the top of a delayed coking coke tower, which can collect tail gas generated by the delayed coking coke tower in the petrochemical industry.

Background

In the process of water cooling of the coke, the top of the delayed coking is open and inorganically discharged, and the delayed coking contains a large amount of organic matters, sulfides, water vapor and the like which cause serious pollution to the environment.

With the gradual tightening of environmental protection policies, the unorganized emission is inevitably controlled and treated, and is also an environmental problem in the petrochemical industry.

More petrochemical enterprises in China do not have a good method for collecting and treating tail gas discharged by a coke drum.

Disclosure of Invention

The invention aims to provide a system for collecting waste gas at the top of a delayed coking coke tower, aiming at overcoming the defects in the prior art, and the system can be used for accurately collecting the tail gas of delayed coking in an unorganized way, so that no tail gas escapes.

The technical solution of the invention is as follows: a coke tower top waste gas collecting system of delayed coking coke tower, set up the hemisphere gas collecting channel on the top cover of the coke tower, the said hemisphere gas collecting channel includes the outer seal cloth, set up a row of supports outside the said outer seal cloth, the said outer seal cloth is connected with every support through the anchor nail; a rotating shaft is arranged in the middle of each support, the tail end of each support is in a circular ring shape and is penetrated and welded at one end of the rotating shaft side by side, and the other outer end of the rotating shaft is connected with an electric controller; the bottom of the support is fixedly connected with a fixed base and sealed by outer sealing cloth, and an air suction opening is formed in the outer sealing cloth above the fixed base.

According to the embodiment of the invention, the suction opening is connected with the gas collecting pipe, and the gas collecting pipe is connected with the fan; the fan is a variable frequency fan.

According to the embodiment of the invention, the top of the coke drum is provided with the inner sealing cloth, and the joint part of the inner sealing cloth and the outer sealing cloth forms a fan-shaped area; interior sealed cloth forms two axilla angles with outer sealed cloth in fan-shaped region, interior sealed cloth is according to the appearance at coke drum top, and the laminating is on the coke drum outer wall, and two axilla angle fan-shaped departments are less than coke drum top cap department and seal.

According to the embodiment of the invention, a water hose supporting device is arranged above the coke tower; the hose supporting device is electrically connected with the electric controller.

A delayed coking coke drum overhead off-gas collection method comprising the steps of:

step 1: after the coke tower reacts, the coke tower is cooled to open the top cover, the electric controller controls the rotating shaft to rotate, the supports connected with the rotating shaft are turned over and opened, each support is opened one by one to drive the folding outer sealing cloth to be stretched and opened until the gas collecting hood is completely opened, and the top of the coke tower is sealed;

step 2: the tail gas of the coke tower enters a negative pressure gas collecting hood, a fan connected with a gas collecting pipe performs air suction, and the air is sent to a tail gas treatment device through a pipeline;

and step 3: after the coke tower is cooled down, the gas collecting hood controls the rotating shaft through the electric controller to drive the connected support to turn over and restore to an initial folding state, the unfolded outer sealing cloth is driven to fold and furl, and the hydraulic decoking equipment on the water hose supporting device covers the coke tower downwards to perform hydraulic decoking treatment.

The invention has the beneficial effects that: (1) the problem of unorganized discharge of a coke tower in the petrochemical industry is solved, the process of tail gas pollution treatment in the coking industry is promoted, and the health of people in the operation process is ensured to a certain extent; (2) the electric control system is adopted to link the whole operation process, and tail gas is collected in the coke cooling process, so that the continuous operation of delayed coking is not influenced, the whole set of equipment is simple, the sealing is tight, the operation is convenient, the manufacturing cost is low, and the applicability is strong; (3) the fan has a frequency conversion function, can be automatically adjusted according to the amount of tail gas, and is electricity-saving and energy-saving; (4) the device has the advantages of simple equipment, good sealing performance, simple operation, low manufacturing cost and strong applicability, and is suitable for controlling the tail gas at the top of the petrochemical delayed coking tower in China.

Drawings

FIG. 1 is a schematic diagram of a delayed coking coke drum overhead off-gas collection system.

FIG. 2 is a schematic diagram of a delayed coking coke drum top head construction.

FIG. 3 is a cross-sectional view of a delayed coking coke drum overhead off-gas collection system.

Fig. 4 is a side view of a delayed coking coke drum overhead off-gas collection system.

FIG. 5 is a schematic diagram of a delayed coking coke drum overhead off-gas collection system support structure.

In the figure: 1-coke tower, 2-top cover, 3-water hose supporting device, 4-outer sealing cloth, 5-bracket, 6-electric controller, 7-fixed base, 8-air suction opening, 9-anchoring nail, 10-inner sealing cloth and 11 rotating shaft.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, which are provided for illustration purposes, but the scope of the present invention is not limited thereto.

A delayed coking coke tower top waste gas collecting system is characterized in that a hemispherical gas collecting hood is arranged on a top cover 2 of a coke tower 1, the hemispherical gas collecting hood comprises an outer sealing cloth 4, a row of supports (5) are arranged outside the outer sealing cloth 4, and the outer sealing cloth 4 is connected with each support 5 through an anchoring nail 9; a rotating shaft 11 is arranged in the middle of each support 5, the tail end of each support 5 is in a circular ring shape and is in parallel welding with one end of the rotating shaft 11, and the other outer end of the rotating shaft 11 is connected with an electric controller 6; the bottom of the support 5 is fixedly connected with a fixed base 7 and sealed by an outer sealing cloth 4, and the outer sealing cloth 4 above the fixed base 7 is provided with an air suction opening 8.

The support 5 is arranged outside the outer sealing cloth 4, so that the support 5 is not in direct contact with tail gas, and the service life of the support 5 is prolonged.

Support 5 be connected with axis of rotation 11, the axis of rotation 11 other end is connected with electric controller 6, through the equipment linkage, has guaranteed operation process's convenience.

The bottom support 5 is fixed with the fixed base 7, and an outer sealing cloth 4 is arranged for sealing to prevent the bottom of the tail gas from escaping.

The fixed base 7 is fixedly sealed through the outer sealing cloth 4, and the outer sealing cloth 4 is provided with an air suction opening 8.

The suction opening 8 is connected with the gas collecting pipe, the gas collecting pipe is connected with the fan, and the negative pressure work of the gas collecting hood is guaranteed through the operation of the fan.

Interior sealed cloth 10 customize according to the appearance at coke drum 1 top, laminate completely on coke drum 1 outer wall, two armpit fan-shaped departments are less than 1 top cap 2 departments of coke drum and seal, carry out airtight to its furthest when not influencing 1 work of coke drum.

A hose supporting device 3 is arranged above the coke tower 1; the hose supporting device 3 is electrically connected with the electric controller 6.

A method for collecting waste gas at the top of a delayed coking coke tower comprises the following steps:

step 1: after the coke tower 1 reacts, the coke tower is cooled to open the top cover 2, the electric controller 6 controls the rotating shaft 11 to rotate, the supports 5 connected with the rotating shaft 11 are turned over and opened, each support 5 is opened one by one to drive the folding outer sealing cloth 4 to be stretched until the gas collecting hood is completely opened, and the top of the coke tower 1 is sealed;

step 2: tail gas of the coke tower 1 enters a negative pressure gas collecting hood, a fan connected with a gas collecting pipe performs air suction, and the tail gas is sent to a tail gas treatment device through a pipeline;

and step 3: after the coke tower 1 is cooled down, the gas collecting hood controls the rotating shaft 11 through the electric controller 6 to further drive the connected support 5 to overturn and recover to an initial folding state, the unfolded outer sealing cloth 4 is driven to fold and furl, and the hydraulic decoking equipment on the water hose supporting device 3 downwards covers the coke tower 1 to perform hydraulic decoking treatment.

In summary, these embodiments are different ways implemented based on the design idea of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make relevant improvements and modifications included in the protection scope of the present invention.