Dry quenching power generation heat recovery device

Abstract

The utility model relates to a dry quenching power generation heat recovery device, and belongs to the technical field of dry quenching power generation. Comprising a dry quenching furnace, an exhaust port in the upper portion of the dry quenching furnace is communicated with an air inlet of a primary dust remover through a pipeline A, an air outlet of the primary dust remover is communicated with an air inlet in the upper portion of a waste heat utilization boiler through a pipeline, and a retaining wall is arranged in the primary dust remover and divides the interior of the primary dust remover into a front cavity and a rear cavity. A camera shooting mechanism and a front side face purging mechanism used for sweeping the front side face of the retaining wall are installed at the top in the front cavity, and a flue gate valve is arranged at the joint of the waste heat utilization boiler and the pipeline B. The utility model has the following beneficial effects: the camera mechanism is used for acquiring image information and transmitting the information to an external display for visual monitoring, so that hidden dangers can be found in time, reliable basis is provided for maintenance, on-demand maintenance is realized, the labor intensity of operators is reduced, the normal production of dry quenching is not influenced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dry quenching power generation heat recovery device belongs to dry quenching power generation technical field. BACKGROUND

[0002] In the dry quenching process, the red coke is loaded from the top of the dry quenching furnace, the low-temperature inert gas is blown into the red coke layer in the cooling section of the dry quenching furnace by the circulating fan, and the sensible heat of the red coke is absorbed. The cooled coke is discharged from the bottom of the dry quenching furnace. The high-temperature inert gas flowing out of the annular flue of the dry quenching furnace exchanges heat in the dry quenching process boiler. The boiler produces steam. The cooled inert gas is blown into the dry quenching furnace by the circulating fan. The inert gas is circulated in the closed system. Dry quenching process is superior to wet quenching in energy saving, environmental protection and improvement of coke quality.

[0003] REFERENCE Figure 1 The existing dry quenching power generation heat recovery device, including dry quenching furnace 1, primary dust collector 2, waste heat utilization boiler 3, steam turbine generator unit 4, secondary dust collector 11, circulating fan 12 and heat pipe heat exchanger 13, the current technology does not consider comprehensively, and has the following disadvantages: the primary dust collector baffle wall is washed by coke powder for a long time, and the structural strength is continuously reduced. The wall surface is prone to collapse. At present, in order to find the hidden trouble of collapse in advance, the dry quenching device must be stopped in advance. The operator needs to enter the primary dust collector to observe the service condition of the baffle wall. The labor intensity of the operator is large, the working environment is poor, and the maintenance time is long.

[0004] To solve one of the above problems, a dry quenching power generation heat recovery device is urgently needed. UTILITY MODEL CONTENTS

[0005] According to the deficiencies in the prior art, the technical problem to be solved by the utility model is how to realize visual monitoring, find hidden troubles in time, provide reliable basis for maintenance, and provide a dry quenching power generation heat recovery device to ensure maintenance on demand, reduce the labor intensity of the operator, not affect the normal production of dry quenching, and improve the production efficiency.

[0006] The dry quenching power generation heat recovery device, including dry quenching furnace, the exhaust port of the upper portion of the dry quenching furnace is connected with the air inlet of the primary dust collector through pipeline A, the air outlet of the primary dust collector is connected with the air inlet of the upper portion of the waste heat utilization boiler through pipeline, the waste heat utilization boiler provides superheated steam for the steam turbine generator unit, the superheated steam generated by the waste heat utilization boiler enters the steam turbine and expands to do work, so that the blade rotates to drive the generator to generate electricity, characterized by: the primary dust collector is built-in baffle wall, the baffle wall divides the primary dust collector into front chamber and rear chamber, the inner top of the front chamber is provided with a camera mechanism and a front side blowing and cleaning mechanism for cleaning the front side of the baffle wall, and a flue plug valve is arranged at the connection between the waste heat utilization boiler and pipeline B.

[0007] The camera mechanism is used to collect image information and transmit the information to an external display for visual monitoring, providing reliable basis for the maintenance of the retaining wall, realizing on-demand maintenance, reducing the labor intensity of workers, not affecting the normal production of dry quenching, and improving the production efficiency. In addition, in the shutdown state, the smoke plug valve can be closed, and then the front side blowing mechanism is controlled to blow the front side of the retaining wall, so that the camera mechanism can accurately observe the use state of the retaining wall.

[0008] Preferably, the camera mechanism comprises a protective sleeve, the protective sleeve is inclinedly arranged, the bottom opening of the protective sleeve is directed to the retaining wall, the upper end of the protective sleeve is provided with an upper cover plate, a camera for observing the retaining wall and an air inlet pipe are installed on the upper cover plate, the camera is installed at the center position of the upper cover plate, the air inlet pipe is in communication with a gas supply branch pipeline A, the other end of the gas supply branch pipeline A is connected to a nitrogen gas supply source, and an electric control valve A is installed on the gas supply branch pipeline A.

[0009] After the electric control valve A is opened, the nitrogen gas supply source supplies compressed nitrogen into the cavity surrounded by the protective sleeve and the upper cover plate through the gas supply branch pipeline A and the air inlet pipe, so that the protective sleeve maintains a slightly positive pressure state, prevents the gas with dust from entering the protective sleeve, and ensures that the camera assembly of the camera is not contaminated and the purpose of visual monitoring is achieved.

[0010] Preferably, the air inlet pipe is provided with three groups, the three groups of air inlet pipes are arranged around the center line of the upper cover plate, and the included angle between adjacent two air inlet pipes is 120 degrees, and the three groups of air inlet pipes are in communication with the gas supply branch pipeline A. The protection effect of the camera is improved.

[0011] Preferably, the protective sleeve is a hollow circular tube.

[0012] Preferably, the protective sleeve is installed on the inner wall of the primary dust collector through a sleeve mounting frame.

[0013] Preferably, the front side blowing mechanism comprises a horizontally arranged gas collecting pipe, both ends of the gas collecting pipe are blocked, a plurality of groups of high-pressure air nozzles are arranged along the length direction of the gas collecting pipe, a lifting cylinder for driving the gas collecting pipe to lift is arranged on the outer wall of the primary dust remover, and a flexible air pipe connected with the gas collecting pipe is arranged, one end of the flexible air pipe is connected with the gas supply branch pipeline B, the other end of the gas supply branch pipeline B is connected with the nitrogen gas supply source, and an electric control valve B is arranged on the gas supply branch pipeline B. When dust is accumulated on the surface of the retaining wall, the electric control valve B can be opened to supply nitrogen gas to the gas collecting pipe, compressed nitrogen gas is sprayed out through the high-pressure air nozzles on the gas collecting pipe, the lifting cylinder is controlled to lift the gas collecting pipe, and the high-pressure nitrogen gas sprayed out through the high-pressure air nozzles can blow the dust on the retaining wall clean, and the flexible air pipe is arranged to avoid interference with the lifting of the gas collecting pipe, the flue damper valve needs to be opened again to ensure stable operation of the device when the front side of the retaining wall is blown clean.

[0014] Preferably, the rear chamber is provided with a rear side blowing mechanism which is the same in structure as the front side blowing mechanism. The rear side of the retaining wall can be blown by using the same operation process as the front side blowing mechanism.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The dry quenching power generation heat recovery device can realize on-demand maintenance, reduce the labor intensity of workers, does not affect the normal production of dry quenching, and improves the production efficiency. In addition, in the shutdown state, the flue damper valve can be closed, and then the front side blowing mechanism is controlled to blow the front side of the retaining wall, so that the camera mechanism can accurately observe the use state of the retaining wall.

[0017] The dry quenching power generation heat recovery device, after the electric control valve A is opened, the nitrogen gas supply source passes compressed nitrogen gas into the cavity surrounded by the protective sleeve and the upper cover plate through the gas supply branch pipeline A and the air inlet pipe, so that the protective sleeve is kept in a slightly positive pressure state, the gas with dust is prevented from entering the protective sleeve, the camera assembly of the camera is prevented from being polluted, and the purpose of visual monitoring is achieved.

[0018] The dry quenching power generation heat recovery device, after the electric control valve B is opened, nitrogen gas is supplied to the gas collecting pipe, compressed nitrogen gas is sprayed out through the high-pressure air nozzles on the gas collecting pipe, the lifting cylinder is controlled to lift the gas collecting pipe, high-pressure nitrogen gas sprayed out through the high-pressure air nozzles can blow the dust on the retaining wall clean, the flexible air pipe is arranged to avoid interference with the lifting of the gas collecting pipe, and the flue damper valve needs to be opened again to ensure stable operation of the device when the front side of the retaining wall is blown clean. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the primary dust collector of this utility model;

[0022] Figure 3 This is a schematic diagram of the front side purging mechanism;

[0023] Figure 4 This is a schematic diagram of the rear side purging mechanism.

[0024] In the diagram: 1. Dry quenching furnace; 2. Primary dust collector; 3. Waste heat recovery boiler; 4. Steam turbine generator set; 5. Flue gas duct gate valve; 6. Baffle wall; 7. Camera mechanism; 7.1. Protective sleeve; 7.2. Air inlet pipe; 7.3. Top cover plate; 7.4. Camera; 7.5. Sleeve mounting bracket; 8. Front side blowing mechanism; 8.1. Gas collecting pipe; 8.2. High-pressure jet nozzle; 8.3. Lifting cylinder; 8.4. Gas supply branch pipe B; 8.5. Electrically controlled valve B; 8.6. Flexible ventilation pipe; 9. Gas supply branch pipe A; 10. Electrically controlled valve A; 11. Secondary dust collector; 12. Circulating fan; 13. Heat pipe heat exchanger. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0026] Example 1, as Figures 1-2As shown, the dry quenching coke generator heat recovery device includes a dry quenching furnace 1. The exhaust port of the dry quenching furnace 1 is connected to the air inlet of a primary dust collector 2 via pipe A. The exhaust port of the primary dust collector 2 is connected to the air inlet of a waste heat recovery boiler 3 via pipe B. The waste heat recovery boiler 3 provides superheated steam to a turbine generator set 4. The superheated steam generated by the waste heat recovery boiler 3 enters the turbine and expands to do work, causing the blades to rotate and drive the generator to generate electricity. The primary dust collector 2 has a baffle wall 6 inside, which divides the interior of the primary dust collector 2 into a front chamber and a rear chamber. A camera mechanism 7 and a front side cleaning mechanism 8 for cleaning the front side of the baffle wall 6 are installed on the top of the front chamber. A flue gas valve 5 is provided at the connection between the waste heat recovery boiler 3 and pipe B.

[0027] The camera mechanism 7 is used to collect image information and transmit it to an external display for visual monitoring, enabling timely detection of potential hazards, providing a reliable basis for maintenance, achieving on-demand maintenance, reducing the labor intensity of operators, not affecting normal dry quenching coke production, and improving production efficiency. Additionally, in the shutdown state, the front side blowing mechanism 8 can be controlled by closing the flue gas duct baffle valve 5 to blow the front side of the retaining wall 6, ensuring that the camera mechanism 7 can accurately observe the operating status of the retaining wall 6.

[0028] Example 2, as Figures 1-3 As shown, the dry quenching coke generator heat recovery device includes a dry quenching furnace 1. The exhaust port of the dry quenching furnace 1 is connected to the air inlet of a primary dust collector 2 via pipe A. The exhaust port of the primary dust collector 2 is connected to the air inlet of a waste heat recovery boiler 3 via pipe B. The waste heat recovery boiler 3 provides superheated steam to a turbine generator set 4. The superheated steam generated by the waste heat recovery boiler 3 enters the turbine and expands to do work, causing the blades to rotate and drive the generator to generate electricity. The primary dust collector 2 has a baffle wall 6 inside, which divides the interior of the primary dust collector 2 into a front chamber and a rear chamber. A camera mechanism 7 and a front side cleaning mechanism 8 for cleaning the front side of the baffle wall 6 are installed on the top of the front chamber. A flue gas valve 5 is provided at the connection between the waste heat recovery boiler 3 and pipe B.

[0029] Furthermore, the camera mechanism 7 includes a protective sleeve 7.1, which is inclined and has its bottom opening facing the retaining wall 6. The upper end of the protective sleeve 7.1 has an upper cover plate 7.3, on which a camera 7.4 for observing the retaining wall 6 and an air inlet pipe 7.2 are installed. The camera 7.4 is installed at the center of the upper cover plate 7.3. The air inlet pipe 7.2 is connected to a gas supply branch pipe A9, and the other end of the gas supply branch pipe A9 is connected to a nitrogen gas supply source. An electrically controlled valve A10 is installed on the gas supply branch pipe A9.

[0030] When the electric control valve A10 is opened, the nitrogen gas supply source supplies compressed nitrogen gas into the cavity enclosed by the protective sleeve 7.1 and the upper cover plate 7.3 through the gas supply branch pipe A9 and the air inlet pipe 7.2, so that the protective sleeve 7.1 is kept in a slightly positive pressure state, and the gas containing dust is prevented from entering the protective sleeve 7.1, so as to prevent the camera assembly of the camera 7.4 from being polluted and to ensure the purpose of visual monitoring.

[0031] Further, the air inlet pipe 7.2 is provided in three groups, and the adjacent two groups of air inlet pipes 7.2 are arranged at an angle of 120 degrees around the center line of the upper cover plate 7.3, and the three groups of air inlet pipes 7.2 are all connected with the gas supply branch pipe A9. The protection effect of the camera 7.4 is improved.

[0032] Further, the protective sleeve 7.1 is a hollow circular tube.

[0033] Further, the protective sleeve 7.1 is installed on the inner wall of the primary dust collector 2 through the sleeve mounting frame 7.5.

[0034] Further, the front side blowing mechanism 8 comprises a horizontally arranged gas collecting pipe 8.1, both ends of the gas collecting pipe 8.1 are blocked, and a plurality of groups of high-pressure air nozzles 8.2 are arranged along the length direction of the gas collecting pipe 8.1, a lifting cylinder 8.3 for driving the gas collecting pipe 8.1 to lift is installed on the outer wall of the primary dust collector 2, and a flexible air pipe 8.6 connected with the gas collecting pipe 8.1 is further provided, the other end of the flexible air pipe 8.6 is connected with a gas supply branch pipe B8.4, the other end of the gas supply branch pipe B8.4 is connected with a nitrogen gas supply source, and an electric control valve B8.5 is installed on the gas supply branch pipe B8.4. When dust is accumulated on the surface of the baffle 6, the electric control valve B8.5 can be opened to supply gas to the gas collecting pipe 8.1, and the compressed nitrogen gas is sprayed out through the high-pressure air nozzles 8.2 on the gas collecting pipe 8.1, and the lifting cylinder 8.3 is used to control the lifting of the gas collecting pipe 8.1, and the high-pressure nitrogen gas sprayed out through the high-pressure air nozzles 8.2 can blow away the dust on the baffle 6, and the flexible air pipe 8.6 is arranged to avoid interference with the lifting of the gas collecting pipe 8.1, and the baffle 6 needs to be re-opened after the front side is blown clean, so as to ensure the stable operation of the device.

[0035] Embodiment 3, refer to Figure 4 The difference between the embodiment 2 and the embodiment 3 is that the rear cavity has a rear side blowing mechanism, and the rear side blowing mechanism has the same structure as the front side blowing mechanism 8. The rear side of the baffle 6 can be blown by using the same operation process as the front side blowing mechanism 8.

[0036] The dry quenching power generation heat recovery device, the camera mechanism is used for collecting image information and transmitting information to the outside display to carry out visual monitoring, discovers hidden dangers in time, provides reliable basis for overhauling, realizes on-demand maintenance, reduces the labor intensity of operating personnel, does not affect the normal production of dry quenching, and improves production efficiency. In addition, under the shutdown state, the flue plug valve can be closed, then the front side blowing mechanism is controlled to blow the front side of the baffle wall, so that the camera mechanism can accurately observe the use state of the baffle wall.

[0037] The dry quenching power generation heat recovery device, after opening the electric control valve A, the nitrogen gas supply source passes through the gas supply branch pipe A and the air inlet pipe to the cavity surrounded by the protective sleeve and the upper cover plate, and the compressed nitrogen gas is introduced into the cavity, so that the protective sleeve maintains a slight positive pressure state, prevents the gas with dust from entering the protective sleeve, and ensures that the camera assembly of the camera is not polluted, and the purpose of visual monitoring is ensured.

[0038] The dry quenching power generation heat recovery device, opening the electric control valve B, supplying gas to the gas collecting pipe, the compressed nitrogen gas is sprayed out through the high-pressure air jet nozzle on the gas collecting pipe, and the lifting cylinder is used to control the lifting of the gas collecting pipe, the high-pressure nitrogen gas sprayed out through the high-pressure air jet nozzle can blow away the dust on the baffle wall, and the flexible air pipe is arranged to avoid interference with the lifting of the gas collecting pipe, the flue plug valve needs to be opened again after the front side of the baffle wall is blown clean, to ensure the stable operation of the device.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the application, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

[0040] The details of the application are not described, which are well-known to those skilled in the art.

Claims

1. A dry quenching coke oven power generation heat recovery device, comprising a dry quenching furnace, wherein the exhaust port of the upper part of the dry quenching furnace is connected to the air inlet of a primary dust collector via pipe A, and the air outlet of the primary dust collector is connected to the air inlet of the upper part of a waste heat recovery boiler via pipe, wherein the waste heat recovery boiler provides superheated steam to a steam turbine generator set, characterized in that: The primary dust collector is provided with a baffle wall, which divides the primary dust collector into a front chamber and a rear chamber, the inner top of the front chamber is provided with a camera mechanism and a front side blowing mechanism for cleaning the front side of the baffle wall, and a flue plug valve is arranged at the connection between the waste heat utilization boiler and the pipeline B.

2. The coke dry quenching power generation heat recovery apparatus according to claim 1, characterized by, The camera mechanism comprises a protective sleeve, which is arranged obliquely, the bottom opening of the protective sleeve faces the baffle wall, the upper end of the protective sleeve is provided with an upper cover plate, a camera for observing the baffle wall and an air inlet pipe are arranged on the upper cover plate, the camera is arranged at the center of the upper cover plate, the air inlet pipe is connected with a gas supply branch pipeline A, the other end of the gas supply branch pipeline A is connected with a nitrogen gas supply source, and an electric control valve A is arranged on the gas supply branch pipeline A.

3. The coke dry quenching power generation heat recovery apparatus according to claim 2, characterized by, The air inlet pipe is provided with three groups, the adjacent two groups are arranged around the center line of the upper cover plate at an angle of 120 degrees, and the three groups of air inlet pipes are connected with the gas supply branch pipeline A.

4. The coke dry quenching power generation heat recovery apparatus according to claim 3, characterized by The protective sleeve is a hollow circular tube.

5. The coke dry quenching power generation heat recovery device according to claim 4, characterized by The protective sleeve is installed on the inner wall of the primary dust collector through a sleeve mounting frame.

6. The coke dry quenching power generation heat recovery apparatus according to claim 5, characterized by The front side blowing mechanism comprises a horizontally arranged gas collecting pipe, both ends of the gas collecting pipe are blocked, a plurality of groups of high-pressure air nozzles are arranged along the length direction of the gas collecting pipe at intervals, a lifting cylinder for driving the gas collecting pipe to lift is arranged on the outer wall of the primary dust collector, a flexible air pipe connected with the gas collecting pipe is further arranged, the other end of the flexible air pipe is connected with a gas supply branch pipeline B, the other end of the gas supply branch pipeline B is connected with a nitrogen gas supply source, and an electric control valve B is arranged on the gas supply branch pipeline B.

7. The coke dry quenching power generation heat recovery device according to claim 6, characterized by The rear chamber is provided with a rear side blowing mechanism, which has the same structure as the front side blowing mechanism.

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