Auxiliary feeding system for alternative fuel of cement factory

Abstract

The utility model relates to the technical field of cement production, and discloses an auxiliary alternative fuel feeding system for a cement factory. The auxiliary feeding system comprises a stock bin used for storing materials; the belt feeder is connected with the stock bin and used for conveying materials; the electric double-knife heavy hammer valve is connected with the belt feeder and is used for tamping materials; and the air cannon is arranged at the inlet of the material decomposing furnace and is used for blowing materials. According to the auxiliary feeding system, materials are conveyed through the belt feeder, the conveying speed of the materials can be changed according to the real-time condition of the system, the materials are tamped through the electric double-knife heavy hammer valve, the materials are blown through the air cannon, and the materials are treated through various means before entering the material decomposing furnace; the risk that the materials are blocked and combusted insufficiently after entering the material decomposing furnace is reduced, and the resource utilization rate and the production safety are improved, so that the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement production technical field, concretely relates to a cement plant alternative fuel auxiliary feeding system. BACKGROUND

[0002] The world sustainable development business council defines alternative fuel for the cement industry as "selected waste and by-products with recoverable heat value can be used as fuel for cement kiln, if they meet strict specifications, they can replace a part of traditional fossil fuels, such as coal. Sometimes they can be used after pretreatment, providing 'customized' fuel for the cement processing process". The industry is also taking measures to establish standardization of alternative fuels. However, due to the specific production guidelines of the cement plant, it is impossible to be effective everywhere. For example, the sulfur content of the fuel: the cement plant with high sulfur content of raw materials faces huge pollution problems when using alternative fuels with high sulfur content. On the other hand, the raw material sulfur content of the adjacent cement plant may be little. Therefore, the cement plant can use their respective alternative fuels. When using alternative fuels, the requirements of the product, cement or limestone, as well as the emission problems of the kiln operation and individual projects are first considered. The cement industry is a highly resource and energy dependent industrial sector, and the current primary problem of the cement industry is energy saving, consumption reduction, environmental protection and rational utilization of resources. The use of alternative fuels derived from combustible waste in cement kiln reduces the damage to the environment and greatly reduces the environmental load of society.

[0003] At present, the kiln system still has problems such as insufficient combustion of alternative fuels under various working conditions such as preheating and precombustion stage after adding alternative fuels. UTILITY MODEL CONTENT

[0004] The purpose of the embodiment of the utility model is to provide a cement plant alternative fuel auxiliary feeding system, which can improve resource utilization rate and production safety.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides a cement plant alternative fuel auxiliary feeding system, which comprises:

[0006] The bunker is used for storing materials;

[0007] The belt feeder is connected with the bunker and is used for conveying materials;

[0008] The electric double-blade heavy hammer valve is connected with the belt feeder and is used for tamping materials;

[0009] The air cannon is arranged at the inlet of the material decomposition furnace and is used for blowing materials.

[0010] Optionally, the auxiliary feeding system further comprises an electric hoist, which is used for carrying materials to the bunker.

[0011] Optionally, the bottom of the bunker is provided with a load sensor, and the top of the bunker is provided with a material level meter.

[0012] Optionally, the auxiliary feeding system further comprises a deviation correction roller arranged between and connected with the bunker and the belt feeder, for correcting the material, and a laser sensor is arranged on the deviation correction roller.

[0013] Optionally, the auxiliary feeding system further comprises a fine material scraper arranged between and connected with the belt feeder and the electric double-blade weight valve, for weighing the weight of the material.

[0014] Optionally, the auxiliary feeding system further comprises a pneumatic push rod flat gate valve arranged between and connected with the electric double-blade weight valve and the inlet of the material decomposition furnace, and a flame detection device is arranged at the outlet of the pneumatic push rod flat gate valve.

[0015] Optionally, the number of the air cannons is three, and the air cannons are arranged at intervals at the inlet of the material decomposition furnace.

[0016] Optionally, the auxiliary feeding system further comprises a video monitoring device for monitoring the running state of each component of the system in real time.

[0017] Optionally, the auxiliary feeding system further comprises a PLC cabinet for controlling the system and displaying the real-time state of the system.

[0018] Through the above technical scheme, the cement plant alternative fuel auxiliary feeding system provided by the utility model transports the material through the belt feeder and can change the transportation rate of the material according to the real-time situation of the system, tamps the material through the electric double-blade weight valve, and sprays the material through the air cannon, so that the material is treated through various means before entering the material decomposition furnace, the risk of congestion and insufficient combustion of the material after entering the material decomposition furnace is reduced, the resource utilization rate and the safety of production are improved, and the production efficiency is improved.

[0019] Other features and advantages of the embodiments of the utility model will be described in detail in the following specific implementation manner part. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are used to provide further understanding of the embodiments of the utility model, and constitute a part of the specification, and are used to explain the embodiments of the utility model together with the following specific implementation manner, but do not constitute the limitation to the embodiments of the utility model. In the drawings:

[0021] Figure 1 It is the schematic diagram of the cement plant alternative fuel auxiliary feeding system according to an embodiment of the utility model;

[0022] Figures 2 to 4 is a detailed exploded schematic view of a cement plant alternative fuel auxiliary feeding system according to an embodiment of the present application;

[0023] Figure 5 is a flow chart of a cement plant alternative fuel auxiliary feeding system according to an embodiment of the present application;

[0024] Figure 6 is a PLC cabinet panel view of a cement plant alternative fuel auxiliary feeding system according to an embodiment of the present application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, silo 2, belt feeder

[0027] 3, electric double knife weight valve 4, air cannon

[0028] 5, electric hoist 6, deviation correction roller

[0029] 7, fine material scraper 8, pneumatic push rod flat gate valve

[0030] 9, flame detection device 61, laser sensor DETAILED DESCRIPTION

[0031] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0032] In the embodiments of the present application, unless otherwise stated, the orientation words such as "up", "down", "top", "bottom" are generally used for the directions shown in the drawings or for the position relationship descriptions of the components in the vertical, perpendicular or gravity directions.

[0033] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the "first", "second", etc. descriptions are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0034] For example, Figure 1The diagram shown is a schematic diagram of an auxiliary feeding system for alternative fuels in a cement plant according to one embodiment of the present invention. Figure 1 The auxiliary feeding system may include a silo 1, a belt feeder 2, an electric double-blade counterweight valve 3, and an air cannon 4. The silo 1 is used to store materials; the belt feeder 2 is connected to the silo 1 to transport and accumulate materials; the electric double-blade counterweight valve 3 is connected to the belt feeder 2 to compact materials; and the air cannon 4 is installed at the inlet of the material decomposition furnace to spray materials.

[0035] In order to transport materials to the silo 1, in one embodiment of this utility model, the auxiliary feeding system may further include an electric hoist 5 for transporting materials to the silo 1, such as... Figure 2 As shown.

[0036] In order to determine whether the material in the silo 1 is full, in one embodiment of the present invention, a load sensor is provided at the bottom of the silo 1, which can be used to detect the weight of the material; a level gauge is provided at the top of the silo 1, which can be used to measure the height of the material accumulation. The filling status of the material in the silo 1 can be determined by the joint detection of the load sensor and the level gauge.

[0037] Material is prone to positional deviation before being conveyed to belt feeder 2. To correct the material deviation, in one embodiment of this invention, the auxiliary feeding system may further include a correction roller 6, such as... Figure 3 As shown. The correction roller 6 can be set between the hopper 1 and the belt feeder 2 and connected to the hopper 1 and the belt feeder 2 respectively, and is used to correct the material. The correction roller 6 is equipped with a laser sensor 61.

[0038] In one embodiment of this invention, to weigh the materials, the auxiliary feeding system may further include a fine material scraper 7. The fine material scraper 7 may be positioned between the belt feeder 2 and the electric double-blade counterweight valve 3, and connected to both, for weighing the materials.

[0039] There is a risk of fire at the end of material transportation. To promptly cut off the material transportation channel in the event of combustion and prevent burning material from entering the material decomposition furnace, in one embodiment of this utility model, the auxiliary feeding system further includes a pneumatic push rod flat gate valve 8, which is located between the electric double-blade counterweight valve 3 and the inlet of the material decomposition furnace and connected to the electric double-blade counterweight valve 3. Figure 4 As shown, a flame detection device 9 is installed at the outlet of the pneumatic push rod flat gate valve 8.

[0040] In this embodiment, the number of the air cannons 4 can be multiple values known by those skilled in the art. In a preferred example of the present application, the number of the air cannons 4 is 3, which are arranged at intervals at the entrance of the material decomposition furnace, and the three air cannons 4 can spray the material according to a certain time interval.

[0041] In order to know the running state of each component of the system in real time, in an embodiment of the present application, the auxiliary feeding system can further comprise a video monitoring device, which can be used to monitor the running state of each component of the system in real time.

[0042] In order to take over the control of the system when an abnormal situation occurs in the system, in an embodiment of the present application, the auxiliary feeding system can further comprise a PLC cabinet for controlling the system and displaying the real-time state of the system. The PCL cabinet receives the detection data of the level meter and load sensor arranged on the stock bin 1 to determine whether the material in the stock bin 1 is full, and if not, drives the electric hoist 5 to continue feeding the material to the stock bin 1 until the stock bin 1 is full, drives the belt feeder 2 to transport the material and changes the transportation rate of the belt feeder 2 according to the real-time situation of the material decomposition furnace, transports the material to the fine material scraper 7, which can weigh the transported material in real time, transports the material to the electric double-knife ram valve 3 for tamping, transports the tamped material to the pneumatic push rod gate valve 8, detects the material by the flame detection device 9, closes the pneumatic push rod gate valve 8 and other equipment if an abnormality is found, and notifies the manual for processing, the manual further determines the exact situation of the abnormality through the video monitoring, and normally opens the pneumatic push rod gate valve 8 if there is no abnormality, and sequentially opens the three air cannons 4 to spray the material, and the sprayed material enters the material decomposition furnace. The control flow chart is shown in Figure 5 The cabinet body plan view of the PCL cabinet is shown in Figure 6 .

[0043] Through the above technical solution, the auxiliary feeding system for alternative fuel in a cement plant provided by the present application transports the material by the belt feeder and can change the transportation rate of the material according to the real-time situation of the system, tamps the material by the electric double-knife ram valve, sprays the material by the air cannon, and processes the material by multiple means before the material enters the material decomposition furnace, which reduces the risk of congestion and insufficient combustion of the material after entering the material decomposition furnace, improves the resource utilization rate and the safety of production, and thus improves the production efficiency.

[0044] It should also be noted that the terms "comprising", "comprises" or other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] The above embodiments of the present application are only used to illustrate the technical solutions of the present application, and not intended to limit the present application. Although the present application is illustrated in detail, those skilled in the art should understand that the present application can make various modifications and changes without departing from the spirit and scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cement plant alternative fuel assisted dosing system, characterized by, The auxiliary feeding system comprises: a bunker for storing materials; a belt feeder connected with the bunker for conveying materials; a double-blade electric hammer valve connected with the belt feeder for tamping materials; an air cannon arranged at the inlet of a material decomposition furnace for blasting materials.

2. The assisted dosing system according to claim 1, characterized in that The auxiliary feeding system further comprises an electric hoist for carrying materials to the bunker.

3. The assisted dosing system of claim 1, wherein, A load sensor is arranged at the bottom of the bunker, and a material level meter is arranged at the top of the bunker.

4. The assisted dosing system of claim 1, wherein, The auxiliary feeding system further comprises a deviation rectifying roller arranged between and connected with the bunker and the belt feeder for rectifying materials, and a laser sensor is arranged on the deviation rectifying roller.

5. The assisted dosing system of claim 1, wherein, The auxiliary feeding system further comprises a fine material scraper arranged between and connected with the belt feeder and the double-blade electric hammer valve for weighing the weight of materials.

6. The assisted dosing system of claim 1, wherein, The auxiliary feeding system further comprises a pneumatic push rod flat gate valve arranged between and connected with the double-blade electric hammer valve and the inlet of the material decomposition furnace, and a flame detection device is arranged at the outlet of the pneumatic push rod flat gate valve.

7. The assisted dosing system of claim 1, wherein, The number of the air cannons is three, and the air cannons are arranged at intervals at the inlet of the material decomposition furnace.

8. The assisted dosing system of claim 1, wherein, The auxiliary feeding system further comprises a video monitoring device for monitoring the running state of each component of the system in real time.

9. The assisted dosing system of claim 1, wherein, The auxiliary feeding system further comprises a PLC cabinet for controlling the system and displaying the real-time state of the system.

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