Coke charging and dust removal control method for dry quenching

Abstract

The invention belongs to the field of dry quenching, and relates to a control method for coke loading and dust removal in dry quenching, and during coke loading in dry quenching, a pre-storage chamber pressure regulating valve control adjusting program, a pre-storage chamber pressure regulating valve interlocking loading device furnace cover detection signal and a dry quenching material level detection signal are added. The pressure of the pre-storage chamber is controlled within the negative pressure range, impact on a gas circulating system is reduced, the pressure of a circulating gas system is stabilized, escape of gas, flames and dust during dry quenching coke loading can be effectively solved, it is guaranteed that no smoke escapes during coke loading, the dust amount of an elevator mechanical chamber, a cab and a loading device platform is reduced, and the electrical facility environment is guaranteed. The labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention belongs to the field of dry coke quenching and relates to a control method for dust removal of dry coke quenching coke loading. Background Art

[0002] The CDQ loading device is located at the top of the CDQ furnace, and cooperates with the elevator to load the red coke in the coke tank into the CDQ furnace. It has two main functions, opening and closing the furnace cover according to instructions and loading the red coke into the CDQ furnace through the loading hopper. During the process of the elevator hanging the coke tank and moving horizontally to the center of the CDQ furnace, the furnace cover connected to the loading device is automatically opened by the electric cylinder, and the coke loading funnel is automatically placed on the upper part of the CDQ furnace. When the loading device starts to move to open the furnace cover, the wear-resistant butterfly valve on the dust collection pipe is also automatically opened to start dust collection. After the discharge port of the loading hopper is aligned with the CDQ furnace port, the elevator starts to roll down the coke tank, and the coke tank falls on the sliding support on the hopper. The elevator continues to roll down, and the gate at the bottom of the coke tank begins to open to load coke. When the bottom door of the coke tank is fully opened, the limit switch installed on the coke tank support is actuated, sending a signal that the bottom door of the coke tank is open, and the coke loading is completed. In production practice, although the dust removal butterfly valve of the loading device is opened for dust removal during coke loading, the dust removal effect is poor and the problem of smoke and dust escape cannot be effectively solved. A large amount of gas, flame and dust escaped from the furnace mouth, polluting the environment and causing serious dust accumulation on the loading device platform. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a control method for dust removal during dry quenching and coke loading, which can effectively prevent the escape of gas, flame and dust during the coke loading process, reduce the amount of dust in the elevator machine room, driver's room and loading device platform, and protect the environment.

[0004] To achieve the above object, the present invention provides the following technical solutions: a control method for dry quenching coke loading and dust removal, when dry quenching coke loading, a new pre-storage chamber pressure regulating valve control adjustment program is added, the pre-storage chamber pressure regulating valve interlocks the loading device furnace cover detection signal and the dry quenching furnace material level detection signal, including the following steps:

[0005] S1, the first control module, the pre-storage chamber pressure regulating valve interlocks the furnace cover detection signal of the loading device; a new operation adjustment window is added to the operation screen of the dry coke quenching control room. When the loading device detects the signal of the furnace cover opening, the pre-storage pressure regulating valve interlocks the furnace cover opening signal, automatically adjusts the pre-storage chamber pressure, and the opening of the pre-storage chamber regulating valve increases different opening options such as 0-20% on the basis of the original opening;

[0006] S21, CDQ furnace & circulating fan screen, set a manual input value B screen next to the pre-storage chamber pressure regulating valve, and set the B range of 0 to 20% in the program background;

[0007] S22, taking the "close" signal of the furnace cover of the loading device as the trigger condition, when the "close" signal of the furnace cover is lost, the pressure regulating valve of the pre-storage chamber is forced to adjust the valve to A+B under the manual setting value A; when the furnace cover is "closed", the pressure regulating valve of the pre-storage chamber is forced to return the valve position opening to A;

[0008] S2, the second control module, the pre-storage chamber pressure regulating valve interlocks the dry quenching furnace material level; a new operation adjustment window is added to the operation screen of the dry quenching coke control room, and the pre-storage chamber pressure regulating valve is interlocked according to the dry quenching furnace material level. The opening of the pre-storage chamber regulating valve is increased or decreased by 0 to 20% on the basis of the original opening, and other different opening operation options;

[0009] S21, CDQ furnace & circulating fan screen, set a manual input value B screen next to the pre-storage chamber pressure regulating valve, and set the B range of 0 to 20% in the program background;

[0010] S22, taking the CDQ furnace "actual material level" signal as the trigger condition, when the CDQ furnace material level is higher than the "120 tons" signal, the pre-storage chamber pressure regulating valve is forced to adjust the valve to A+B under the manual setting value A; when the CDQ furnace material level is lower than the "40 tons" signal, the pre-storage chamber pressure regulating valve is forced to adjust the valve to AB.

[0011] Optionally, the pre-storage chamber regulating valve is interlocked with the CDQ furnace material level height, and the actual interlocking height of the CDQ furnace material level can be flexibly adjusted according to the actual smoke and flame conditions during coking on site.

[0012] The beneficial effects of the present invention are:

[0013] 1. The pre-storage chamber pressure regulating valve of the present invention is interlocked with the furnace cover detection signal of the loading device, and the pre-storage chamber pressure is automatically adjusted according to the dry quenching furnace cover detection signal, and the pre-storage chamber pressure is controlled within the negative pressure range;

[0014] 2. The pre-storage chamber pressure regulating valve of the present invention is interlocked with the dry quenching furnace material level. The pre-storage chamber pressure is automatically adjusted according to the dry quenching furnace material level. When the dry quenching furnace material level is higher than 120 tons, the pre-storage chamber regulating valve opening increases by 0 to 20% and other non-interlocking openings; when the dry quenching furnace material level is lower than 40 tons, the pre-storage chamber pressure regulating valve opening decreases by 0 to 20% and other non-interlocking openings;

[0015] 3. The pre-storage chamber pressure regulating valve of the present invention can adjust the action back and forth to reduce the jamming and failure phenomena;

[0016] 4. When the dry quenching coke is loaded, the pressure of the pre-storage chamber is controlled in the negative pressure range, which reduces the impact on the gas circulation system and stabilizes the pressure of the circulating gas system. It can effectively solve the problem of gas, flame and dust leakage during dry quenching coke loading, ensure that there is no smoke and dust leakage during coke loading, reduce the dust in the hoist machine room, driver's room and loading device platform, protect the environment of electrical facilities, and reduce the labor intensity of employees.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0019] The present invention is a control method for dry quenching coke loading and dust removal. When dry quenching coke loading, a pre-storage chamber pressure regulating valve control adjustment program is added, and the pre-storage chamber pressure regulating valve interlocks the loading device furnace cover detection signal and the dry quenching furnace material level detection signal, including the following steps:

[0020] S1, technical solution 1; the first control module, the pre-storage chamber pressure regulating valve interlocks the detection signal of the furnace cover of the loading device. A new operation adjustment window is added to the operation screen of the dry coke quenching control room. When the loading device detects the signal of the furnace cover opening, the pre-storage pressure regulating valve interlocks the furnace cover opening signal, automatically adjusts the pre-storage chamber pressure, and the opening of the pre-storage chamber regulating valve increases different opening options such as 0-20% on the basis of the original opening. The details are as follows:

[0021] 1. In the CDQ furnace & circulating fan screen, a B screen for manually inputting numerical values ​​is set next to the pre-storage chamber pressure regulating valve (PCV-109), and the B range (0-20%) is set in the program background;

[0022] 2. Take the "close" signal of the furnace cover of the loading device as the trigger condition. When the furnace cover "close" signal is lost, the pre-storage chamber pressure regulating valve (PCV-109) is forced to adjust the valve to (A+B) under the manual setting value A; when the furnace cover "close" signal is on, the pre-storage chamber pressure regulating valve (PCV-109) is forced to restore the valve position opening to A.

[0023] S2, technical solution 2; the second control module, the pre-storage chamber pressure regulating valve interlocks the dry quenching furnace material level. A new operation adjustment window is added to the operation screen of the dry quenching coke control room, and the pre-storage chamber pressure regulating valve is interlocked according to the dry quenching furnace material level. The pre-storage chamber regulating valve opening is increased or decreased by 0 to 20% based on the original opening, and other different opening operation options.

[0024] 1. In the CDQ furnace & circulating fan screen, a B screen for manually inputting numerical values ​​is set next to the pre-storage chamber pressure regulating valve (PCV-109), and the B range (0-20%) is set in the program background;

[0025] 2. Take the "actual material level" signal of the CDQ furnace as the trigger condition. When the CDQ furnace material level is higher than the "120 tons" signal, the pre-storage chamber pressure regulating valve (PCV-109) is manually set to value A and is forced to adjust the valve to (A+B); when the CDQ furnace material level is lower than the "40 tons" signal, the pre-storage chamber pressure regulating valve (PCV-109) is forced to adjust the valve to (AB). (Note: The pre-storage chamber regulating valve interlocks the CDQ furnace material level height. The actual interlocking height of the CDQ furnace material level can be flexibly adjusted according to the actual smoke and flame conditions during on-site coking).

[0026] In this embodiment, according to the actual situation during on-site focusing, technical solution 1, technical solution 2, or both technical solution 1 and technical solution 2 are selected.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A control method for dust removal of coke dry quenching, characterized in that: When CDQ coke is loaded, a new control adjustment procedure for the pre-storage chamber pressure regulating valve is added. The pre-storage chamber pressure regulating valve interlocks the loading device furnace cover detection signal and the CDQ furnace material level detection signal, including the following steps: S1, the first control module, the pre-storage chamber pressure regulating valve interlocks the furnace cover detection signal of the loading device; a new operation adjustment window is added to the operation screen of the dry coke quenching control room. When the loading device detects the signal of the furnace cover opening, the pre-storage pressure regulating valve interlocks the furnace cover opening signal, automatically adjusts the pre-storage chamber pressure, and the opening of the pre-storage chamber regulating valve increases different opening options such as 0-20% on the basis of the original opening; S21, CDQ furnace & circulating fan screen, set a manual input value B screen next to the pre-storage chamber pressure regulating valve, and set the B range of 0 to 20% in the program background; S22, taking the "close" signal of the furnace cover of the loading device as the trigger condition, when the "close" signal of the furnace cover is lost, the pressure regulating valve of the pre-storage chamber is forced to adjust the valve to A+B under the manual setting value A; when the furnace cover is "closed" signal, the pressure regulating valve of the pre-storage chamber is forced to return the valve position opening to A; S2, the second control module, the pre-storage chamber pressure regulating valve interlocks the dry quenching furnace material level; a new operation adjustment window is added to the operation screen of the dry quenching coke control room, and the pre-storage chamber pressure regulating valve is interlocked according to the dry quenching furnace material level. The opening of the pre-storage chamber regulating valve is increased or decreased by 0 to 20% on the basis of the original opening, and other different opening operation options; S21, CDQ furnace & circulating fan screen, set a manual input value B screen next to the pre-storage chamber pressure regulating valve, and set the B range of 0 to 20% in the program background; S22, taking the CDQ furnace "actual material level" signal as the trigger condition, when the CDQ furnace material level is higher than the "120 tons" signal, the pre-storage chamber pressure regulating valve is forced to adjust the valve to A+B under the manual setting value A; when the CDQ furnace material level is lower than the "40 tons" signal, the pre-storage chamber pressure regulating valve is forced to adjust the valve to AB.

2. A control method for dust removal of coke loading during dry quenching according to claim 1, characterized in that: The pre-storage chamber regulating valve is interlocked with the CDQ furnace material level height. The actual interlocking height of the CDQ furnace material level can be flexibly adjusted according to the actual smoke and flame conditions during coking on site.