Alternative fuel conveying device

Abstract

The utility model relates to the field of cement building materials, in particular to an alternative fuel conveying device which comprises a decomposing furnace body and further comprises a conveying assembly, the conveying assembly comprises a tertiary air pipe, a discharging pipe, a shell, a dividing wheel, a feeding pipe and a centralizing component, the tertiary air pipe is connected with the decomposing furnace body, the discharging pipe is connected with the tertiary air pipe, the shell is connected with the discharging pipe, and the dividing wheel is connected with the feeding pipe. The grid wheel is arranged in the shell, the feeding pipe is connected with the shell, and the concentration component is arranged on the feeding pipe, so that alternative fuel is accurately and uniformly fed through the grid wheel, carbon monoxide fluctuation is avoided, material calcination in a kiln is prevented from being affected, and alternative fuel combustion maximization is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cement building materials, and in particular to an alternative fuel conveying device. Background Technology

[0002] Traditional cement production lines use relatively small cylindrical furnaces with high cross-sectional wind velocities. At a production capacity of 5500 t / d, the outlet temperature of the decomposition furnace is approximately 880°C, and the decomposition rate of the material entering the kiln is around 90%. The existing decomposition furnace capacity can meet the residence time requirements of pulverized coal in the furnace. However, if the clinker production increases, the residence time of gas in the furnace will shorten, the resistance will increase, and the required production capacity cannot be guaranteed.

[0003] The existing precalciner includes a furnace body, which is a straight section. The upper end of the furnace body is equipped with an upper connector for connecting to the gooseneck tube, and the lower end is equipped with a cone for connecting to the smoke chamber. The furnace body is connected to the tertiary air duct, which enters the precalciner tangentially from the straight section and connects to it. By modifying the precalciner, the existing kiln tail frame can be fully utilized to maximize the precalciner volume, improve the system's precalcination capacity, and expand the system's processing capacity. This technical upgrade will dismantle the original cylindrical furnace and replace it with two new rows of precalciner furnaces, increasing the precalciner volume and completely solving the problems of C4 material collapse and crusting in the top vortex chamber.

[0004] However, existing cement plants use belt conveyors to transport alternative fuels (cloth shreds, wood chips) to the combustion furnace (external furnace) for clinker calcination, or belt conveyors and screw conveyors to directly feed the alternative fuels into the decomposition furnace for combustion. Due to uneven feeding of alternative fuels, carbon monoxide fluctuations are easily generated, affecting the calcination of materials in the kiln and failing to maximize the combustion of alternative fuels. Utility Model Content

[0005] The purpose of this invention is to provide an alternative fuel conveying device, which aims to solve the problem that existing decomposition furnaces directly feed alternative fuels into the furnace for combustion, and the uneven feeding of alternative fuels easily causes carbon monoxide fluctuations, affecting the calcination of materials in the kiln and failing to maximize the combustion of alternative fuels.

[0006] To achieve the above objectives, this utility model provides an alternative fuel conveying device, including a decomposition furnace body.

[0007] It also includes conveyor components,

[0008] The conveying assembly includes a tertiary air duct, a discharge pipe, a housing, a dividing wheel, a feed pipe, and a concentrating component. The tertiary air duct is connected to the decomposition furnace body and is located on one side of the decomposition furnace body. The discharge pipe is connected to the tertiary air duct and is located on one side of the tertiary air duct. The housing is connected to the discharge pipe and is located on the side of the discharge pipe away from the tertiary air duct. The dividing wheel is disposed in the housing. The feed pipe is connected to the housing and is located on the side of the housing away from the discharge pipe. The concentrating component is disposed on the feed pipe.

[0009] The centralized component includes a fixed frame and a centralized funnel. The fixed frame is fixedly connected to the feed pipe and is located on one side of the feed pipe; the centralized funnel is fixedly connected to the fixed frame and is located on one side of the fixed frame.

[0010] The conveying assembly further includes a fixed pipe, which is fixedly connected to the tertiary air duct and the discharge pipe, respectively, and the fixed pipe is located on the side of the tertiary air duct closer to the discharge pipe.

[0011] The tertiary air duct has an inclined surface, which is located on one side of the tertiary air duct.

[0012] The conveying assembly also includes an air cannon, which is mounted on the tertiary air duct and located on the side of the tertiary air duct near the inclined surface.

[0013] This utility model discloses an alternative fuel conveying device. Based on existing belt conveyors or screw conveyors, the alternative fuel is transported into the feed pipe of the collection component. The rotating impeller within the housing, controlled by a motor and reducer, rotates multiple impellers within the impeller, achieving precise material delivery within the housing cavity. This ensures the alternative fuel is evenly fed into the tertiary air duct, where it is fully combusted by the hot air flowing from the kiln head to the kiln tail. The hot air temperature is increased before entering the decomposition furnace, calcining the raw materials and reducing coal consumption in the decomposition furnace. This achieves partial coal substitution with alternative fuel, reducing coal consumption. The precise and uniform feeding of the alternative fuel through the impeller avoids carbon monoxide fluctuations, thus preventing interference with the calcination of materials within the kiln and maximizing the combustion of the alternative fuel. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the alternative fuel delivery device according to the first embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the feed pipe according to the first embodiment of the present invention.

[0017] In the diagram: 101-Decomposition furnace body, 102-Tertiary air duct, 103-Feeding pipe, 104-Shell, 105-Dividing wheel, 106-Feeding pipe, 107-Fixed pipe, 108-Air cannon, 109-Fixed frame, 110-Concentrated funnel, 111-Inclined surface. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] The first embodiment of this application is as follows:

[0020] Please see Figure 1 and Figure 2 ,in Figure 1 This is a schematic diagram of the alternative fuel delivery device according to the first embodiment of this utility model. Figure 2 This is a schematic diagram of the feed pipe according to the first embodiment of the present invention.

[0021] This utility model provides an alternative fuel conveying device, including a decomposition furnace body 101 and a conveying assembly. The conveying assembly includes a tertiary air duct 102, a feeding pipe 103, a shell 104, a dividing wheel 105, a feed pipe 106, a concentrating component, a fixing pipe 107, and an air cannon 108. The concentrating component includes a fixing frame 109 and a concentrating funnel 110. The tertiary air duct 102 has an inclined surface 111. This solution addresses the problem in existing decomposition furnaces where direct combustion of alternative fuels is prone to carbon monoxide fluctuations due to uneven fuel feeding, affecting the calcination of materials within the kiln and failing to maximize alternative fuel combustion. It is understood that this solution can be used when it is necessary to introduce alternative fuels into the decomposition furnace at a uniform rate.

[0022] In this embodiment, the heat released from the combustion of coal fed into the decomposition furnace 101 and the decomposition and heat absorption process of raw carbonate entering the furnace can be carried out simultaneously in a suspended state, thereby increasing the decomposition rate of carbonate entering the kiln to over 90%.

[0023] The tertiary air duct 102 is connected to the decomposition furnace body 101 and located on one side of the decomposition furnace body 101. The feed pipe 103 is connected to the tertiary air duct 102 and located on one side of the tertiary air duct 102. The housing 104 is connected to the feed pipe 103 and located on the side of the feed pipe 103 away from the tertiary air duct 102. The dividing wheel 105 is disposed in the housing 104. The feed pipe 106 is connected to the housing 104 and located on the side of the housing 104 away from the feed pipe 103. The concentrating component is disposed in the... The feed pipe 106 is connected to the tertiary air duct 102, which is connected to the decomposition furnace body 101. The discharge pipe 103 is connected above the tertiary air duct 102. The housing 104 is welded to and connected to the discharge pipe 103. The dividing wheel 105 is disposed in the housing 104. The motor in the dividing wheel 105, in conjunction with a reducer, controls the rotation of multiple impellers of the dividing wheel 105, thereby achieving precise material conveying in conjunction with the inner cavity of the housing 104. The feed pipe 106 is welded to the housing 104 and is connected to the tertiary air duct 102, which is connected to the decomposition furnace body 101. The housing 104 is connected, and materials can be introduced into the housing 104 through the feed pipe 106. The concentrating component is disposed on the feed pipe 106, which facilitates the introduction of materials into the feed pipe 106. This allows alternative fuel to be transported into the feed pipe 106 of the collecting component based on existing belt conveyors or screw conveyors. The material is then rotated by the segmented wheel 105 inside the housing 104. The motor in the segmented wheel 105, in conjunction with a reducer, controls the rotation of multiple impellers of the segmented wheel 105. The shell 104 and its inner cavity achieve precise material delivery, allowing the alternative fuel to be evenly fed into the tertiary air duct 102. The hot air from the kiln head to the kiln tail inside the tertiary air duct 102 is fully combusted, increasing the hot air temperature before entering the decomposition furnace 101. This calcines the raw materials entering the kiln, reducing the amount of coal used in the decomposition furnace. As a result, the alternative fuel partially replaces coal, reducing coal consumption. The dividing wheel 105 ensures precise and uniform feeding of the alternative fuel, avoiding fluctuations in carbon monoxide levels and thus preventing any impact on the calcination of materials inside the kiln, thereby maximizing the combustion of the alternative fuel.

[0024] Secondly, the fixing frame 109 is fixedly connected to the feed pipe 106 and located on one side of the feed pipe 106; the centralized funnel 110 is fixedly connected to the fixing frame 109 and located on one side of the fixing frame 109. The fixing frame 109 is welded to the feed pipe 106, and the centralized funnel 110 is welded to the fixing frame 109. The larger feed opening of the centralized funnel 110 facilitates the introduction of alternative fuel into the feed pipe 106.

[0025] Meanwhile, the fixing pipe 107 is fixedly connected to the tertiary air duct 102 and the discharge pipe 103 respectively. The fixing pipe 107 is located on the side of the tertiary air duct 102 closer to the discharge pipe 103, and the fixing pipe 107 is welded to the outside of the tertiary air duct 102 and the discharge pipe 103. The fixing pipe 107 enables the discharge pipe 103 to be more securely connected to the tertiary air duct 102.

[0026] Finally, the inclined surface 111 is located on one side of the tertiary air duct 102; the air cannon 108 is installed on the tertiary air duct 102 and located on the side of the tertiary air duct 102 close to the inclined surface 111. By expanding the interface between the tertiary air duct 102 and the decomposition furnace, the inclined surface 111 is located below the tertiary air duct 102, so that the ash generated by the fuel material is transported along the inclined surface 111 into the cone of the decomposition furnace body 101 by means of the air cannon 108, and the residual ash is burned again, maximizing the use of alternative fuels, making it more economical, and achieving simple equipment structure, complete combustion, less carbon monoxide impact, maximized combustion, and high economic efficiency of alternative fuel use.

[0027] When using the alternative fuel conveying device of this embodiment, based on the existing belt conveyor or screw conveyor, the alternative fuel is transported into the feed pipe 106 of the collection component, and rotated by the segmented wheel 105 inside the housing 104. The motor in the segmented wheel 105, in conjunction with the reducer, controls the rotation of multiple impellers of the segmented wheel 105, thereby achieving precise material conveying in conjunction with the inner cavity of the housing 104. This allows the alternative fuel to be evenly fed into the tertiary air duct 102, where it is fully combusted by the hot air from the kiln head to the kiln tail inside the tertiary air duct 102, increasing the hot air temperature before entering the decomposition furnace 101. This calcines the raw materials entering the kiln, reducing the amount of coal used in the decomposition furnace, thus achieving the effect of replacing part of the coal with alternative fuel and reducing coal consumption. The segmented wheel 105 ensures precise and uniform feeding of the alternative fuel, avoiding fluctuations in carbon monoxide and thus avoiding affecting the calcination of materials inside the kiln, thereby maximizing the combustion of the alternative fuel.

[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An alternative fuel conveying device, comprising a decomposition furnace body, characterized in that, It also includes conveyor components, The conveying assembly includes a tertiary air duct, a discharge pipe, a housing, a dividing wheel, a feed pipe, and a concentrating component. The tertiary air duct is connected to the decomposition furnace body and is located on one side of the decomposition furnace body. The discharge pipe is connected to the tertiary air duct and is located on one side of the tertiary air duct. The housing is connected to the discharge pipe and is located on the side of the discharge pipe away from the tertiary air duct. The dividing wheel is disposed in the housing. The feed pipe is connected to the housing and is located on the side of the housing away from the discharge pipe. The concentrating component is disposed on the feed pipe.

2. The alternative fuel delivery device as described in claim 1, characterized in that, The centralized component includes a fixed frame and a centralized funnel. The fixed frame is fixedly connected to the feed pipe and is located on one side of the feed pipe. The centralized funnel is fixedly connected to the fixed frame and is located on one side of the fixed frame.

3. The alternative fuel delivery device as described in claim 1, characterized in that, The conveying assembly also includes a fixed pipe, which is fixedly connected to the tertiary air duct and the discharge pipe respectively, and the fixed pipe is located on the side of the tertiary air duct closer to the discharge pipe.

4. The alternative fuel delivery device as described in claim 1, characterized in that, The tertiary air duct has an inclined surface, which is located on one side of the tertiary air duct.

5. The alternative fuel delivery device as described in claim 4, characterized in that, The conveying assembly also includes an air cannon, which is mounted on the tertiary air duct and located on the side of the tertiary air duct near the inclined surface.

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