Storage and transportation system for solid alternative fuel

Abstract

The utility model discloses a storage and transportation system for solid alternative fuel, and relates to the technical field of material storage and transportation systems. The system comprises an unloading area, a storage area and a discharging area which are adjacent in sequence. A traveling crane grab bucket capable of traveling is arranged above the unloading area, the storage area and the discharging area, and the traveling crane grab bucket can stretch out and draw back up and down to grab alternative fuel; the storage area and the discharging area are respectively provided with different independent subareas aiming at different types of alternative fuels, a discharging hopper is arranged in each subarea, a metering belt weigher is arranged below each discharging hopper, and a near-infrared analyzer is arranged on each metering belt weigher and is used for monitoring the alternative fuels in real time; a belt conveyor is arranged below all the metering belt scales, different types of alternative fuels are mixed in the belt conveyor, and a metering bin is arranged below the end part of the belt conveyor; the unloading area, the storage area and the discharging area are arranged in a closed workshop at the same time, the upper portion of the closed workshop is connected with a waste gas treatment system, and waste gas released by alternative fuel is treated and discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of material storage and transportation systems, in particular to a storage and transportation system for solid alternative fuels. Background Art

[0002] Compared with traditional fossil fuels, alternative fuels have a lower carbon emission factor. Using alternative fuels is one of the fastest ways for cement companies to reduce carbon dioxide emissions, but most cement companies do not use much alternative fuel. Alternative fuels are domestic and industrial waste, which will release some gas and emit unpleasant odors during storage and transportation, affecting the health of operators. Intelligent equipment is urgently needed to replace manual operation.

[0003] The invention patent with publication number CN110282323A discloses a material storage and transportation system, which is arranged in a closed material shed, and specifically includes a grab crane and a third conveyor. The grab claw grabs the material and moves it to the third conveyor to deliver the material. This material storage and transportation system lacks a processing structure for odorous materials, and it is also unable to monitor the material status in real time for dynamic adjustment. For cement burning systems, the fluctuation of fuel quantity has a great impact on the product, so it is necessary to reduce the fluctuation of alternative fuels as much as possible. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a storage and transportation system for solid alternative fuels, which can intelligently store and transport a variety of alternative fuels through a driving grab, reduce manual operations, increase the processing capacity of alternative fuels, and reduce gas pollution.

[0005] To achieve this technical purpose, the utility model adopts the following scheme:

[0006] The storage and transportation system of solid alternative fuels includes an unloading area, a storage area and a discharging area which are adjacent to each other in sequence; a movable crane grab is provided above the unloading area, the storage area and the discharging area, and the crane grab can be extended and retracted up and down to grab the alternative fuel; the storage area and the discharging area are respectively divided into different independent areas for different types of alternative fuels, each of which is provided with a discharging hopper, and a metering belt scale is provided under each discharging hopper, and each metering belt scale is equipped with a near-infrared analyzer to monitor the alternative fuel in real time, and a belt conveyor is provided under all the metering belt scales, and different types of alternative fuels are mixed in the belt conveyor, and a metering bin is provided under the end of the belt conveyor; the unloading area, the storage area and the discharging area are arranged in a closed workshop at the same time, and the upper part of the closed workshop is connected to an exhaust gas treatment system to treat and discharge the exhaust gas released by the alternative fuel.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] This system can intelligently store and transport more than two alternative fuels, and each alternative fuel has a separate unloading area, storage area, discharge area and metering equipment;

[0009] In a closed workshop, alternative fuels are grabbed by a crane bucket and transported to the discharge area or storage area to realize storage and transportation of alternative fuels. It operates intelligently and automatically, and operators do not need to enter the storage and transportation system during normal production.

[0010] Large processing capacity, suitable for storage and transportation of alternative fuels for combustion in calciners, and also suitable for alternative fuels for main burners at kiln heads. According to the scale of cement burning system, the storage and transportation capacity is matched to enable the cement burning system to achieve the maximum fuel substitution rate;

[0011] The near infrared analyzer monitors the characteristics of alternative fuels in real time and dynamically adjusts them as needed to reduce the impact of alternative fuel fluctuations on the cement burning system;

[0012] Exhaust treatment and emission control of gases released by alternative fuels can minimize the impact on the environment.

[0013] The preferred embodiment of the present utility model is:

[0014] An electric rolling door is installed on the outside of the unloading area. When the transport truck arrives, the electric rolling door opens automatically, and the transport truck unloads the alternative fuel into the unloading area. After unloading, the electric rolling door closes and the unloading is completed.

[0015] Each discharge hopper is equipped with a weighing device to roughly measure the alternative fuel, which is then accurately measured using a metering belt scale.

[0016] Each discharge hopper and unloading area is equipped with a material level meter to monitor the material height. When the material level in the discharge hopper is low and the material level in the unloading area is normal, the driving grab grabs the alternative fuel from the unloading area to feed; when the material level in the discharge hopper is low and the material level in the unloading area is also too low, the driving grab grabs the alternative fuel from the storage area to the discharge hopper. If the discharge hopper does not need to be fed, the driving grab grabs the alternative fuel from the unloading area to the storage area.

[0017] The driving motors of the discharge hopper and the metering belt scale are both variable frequency motors. The amount of alternative fuel is dynamically adjusted according to the actual operation of the cement burning system and the incoming alternative fuel. The metering belt scale is connected to a near-infrared analyzer, which can monitor the characteristics of the alternative fuel in real time and dynamically adjust it as needed, reducing the impact of fluctuations in the alternative fuel on the cement burning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A storage and transportation system for solid alternative fuels provided by an embodiment of the utility model;

[0019] The markings in the figure are: 1. Driving grab bucket; 2. Unloading area; 3. Storage area; 4. Discharging hopper; 5. Measuring belt scale; 6. Electric rolling door; 7. Near-infrared analyzer; 8. Belt conveyor; 9. Measuring bin; 10. Induced draft fan; 11. Stop valve; 12. Kiln head exhaust gas treatment system; 13. Special exhaust gas treatment system. DETAILED DESCRIPTION

[0020] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0021] The utility model provides a storage and transportation system for solid alternative fuels. The system is applicable to more than two alternative fuels. A schematic diagram is drawn taking two alternative fuels as an example. Figure 1 As shown. The whole is arranged in a closed workshop, and the workshop is arranged with unloading area 2, storage area 3 and discharge area adjacent to each other in sequence. Unloading area 2 is located on the side close to the transportation road, and the discharge area is located on the side close to the kiln. Different sub-unloading areas, sub-storage areas and sub-discharging areas are set for different types of alternative fuels, and the three correspond to each other. At the same time, each sub-unloading area, sub-storage area and sub-discharging area is equipped with a material level meter to monitor the material height in the area. An electric rolling door 6 is installed on the outside of each sub-unloading area, and the sub-unloading area is set below the transportation road surface.

[0022] A crane grab 1 is installed on the top of the workshop, which can move horizontally and vertically. The crane grab 1 can be extended and retracted up and down to grab materials in the unloading area 2 or the storage area 3, and transport the grabbed materials to the discharge area. The crane grab 1 is a conventional device, and its structure will not be described in detail. It only needs to meet the above functions, such as the grab crane in CN110282323A.

[0023] Each discharging area is provided with a discharging hopper 4, and the discharging hopper 4 is equipped with a weighing device to roughly measure the alternative fuel in the discharging hopper 4. The weighing device is generally a load cell. The function of the discharging hopper is mainly to store materials and transport them to the downstream metering belt scale, which can be calibrated online with the metering belt scale. A metering belt scale 5 is connected to the bottom of each discharging hopper 4, and the metering belt scale 5 accurately measures the alternative fuel in transportation. Preferably, the driving motors of the discharging hopper 4 and the metering belt scale 5 are set according to frequency conversion, and the amount of alternative fuel can be dynamically adjusted according to the actual operation of the cement burning system and the incoming material of the alternative fuel. The metering belt scale 5 is connected to a near-infrared analyzer 7 to monitor the characteristics of the alternative fuel in real time and dynamically adjust it as needed to reduce the impact of the fluctuation of the alternative fuel on the cement burning system. Dynamic adjustment refers to the incoming material amount, which can also be said to be the ratio of various alternative fuels. If a certain component of a certain alternative fuel is detected to be high, it is necessary to reduce the amount of this alternative fuel and increase the amount of other alternative fuels. The components after re-proportioning cannot exceed the limit value.

[0024] All metering belt scales 5 are connected to the same belt conveyor 8 below. Different types of alternative fuels are mixed in the belt conveyor 8. A metering bin 9 is arranged below the end of the belt conveyor 8. The metering bin 9 is equipped with a metering device and a discharging device (the metering device and the discharging device are conventional equipment in this field and are not described in detail here). The alternative fuel is further accurately metered and finally accurately fed into the decomposition furnace or the main burner at the kiln head.

[0025] The top of the workshop is connected to the induced draft fan 10 through a ventilation duct, and the induced draft fan 10 is connected to the exhaust gas treatment system through the ventilation duct to treat the exhaust gas. The exhaust gas treatment system is a cement kiln exhaust gas treatment system 12 or a matching special exhaust gas treatment system 13. The special exhaust gas treatment system 13 includes a fan and a deodorization device. The deodorization device is an existing technology and can be purchased directly. The exhaust gas is discharged after being treated by the deodorization device.

[0026] Working process:

[0027] Step 1: After the transport vehicle transports to the designated unloading location, the electric shutter door 6 opens, and the transport vehicle unloads the alternative fuel into the unloading area 2. After unloading, the electric shutter door 6 closes. The driving grab 1 grabs the alternative fuel in the unloading area 2 and sends it to the corresponding discharge hopper 4 or storage area 3: when the material level of the discharge hopper 4 is low and the material level of the unloading area 2 is normal, the driving grab 1 grabs the alternative fuel from the unloading area 2 for feeding; when the material level of the discharge hopper 4 is low and the material level of the unloading area 2 is also low, the driving grab 1 grabs the alternative fuel from the storage area 3 to the discharge hopper 4. If the discharge hopper 4 does not need to be fed, the driving grab 1 grabs the alternative fuel from the unloading area 2 to the storage area 3; when the driving grab 1 is running, on-site personnel are not allowed to enter.

[0028] Step 2: The discharge hopper 4 performs rough metering and matching metering of the alternative fuel (i.e., the falling amount of each alternative fuel and the ratio of the different types of alternative fuel discharge amount are calculated), and the falling alternative fuel is then accurately metered by the metering belt scale 5, and the amount of alternative fuel is dynamically adjusted according to the actual operation of the cement burning system and the incoming alternative fuel. At the same time, the near-infrared analyzer 7 monitors the characteristics of the alternative fuel in real time and dynamically adjusts it according to needs to reduce the impact of the fluctuation of the alternative fuel on the cement burning system.

[0029] Step 3: Various alternative fuels are transported to the metering bin 9 through the belt conveyor 8, further mixed in the metering bin 9, and finally fed into the decomposition furnace or the main burner at the kiln head through the precise metering of the metering bin 9.

[0030] Step 4: The gas released by the alternative fuel is introduced into the exhaust gas treatment system through the induced draft fan 10, and can be introduced into the cement kiln exhaust gas treatment system 12 through the stop valve 11 for harmless disposal, or can enter the supporting special exhaust gas treatment system 13 and be activated during the kiln shutdown period to minimize the impact on the environment.

[0031] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A storage and transportation system for solid alternative fuels, comprising a sequentially adjacent unloading area, a storage area and a discharge area; characterized in that: There is a mobile crane grab bucket above the unloading area, storage area and discharge area. The crane grab bucket can be extended up and down to grab the alternative fuel. The unloading area, storage area and discharging area are divided into different independent zones for different types of alternative fuels. A discharging hopper is set in each discharging area. A metering belt scale is set under each discharging hopper. Each metering belt scale is equipped with a near-infrared analyzer to monitor the alternative fuel in real time. A belt conveyor is set under all metering belt scales. Different types of alternative fuels are mixed in the belt conveyor. A metering bin is set under the end of the belt conveyor. The unloading area, storage area and discharge area are arranged in a closed workshop at the same time. The upper part of the closed workshop is connected to an exhaust gas treatment system to treat and discharge the exhaust gas released by the alternative fuel.

2. The storage and transportation system of solid alternative fuel according to claim 1, characterized in that: An electric rolling door is installed on the outside of the unloading area. When the transport vehicle arrives, the electric rolling door will open and close automatically to complete the unloading.

3. The storage and transportation system of solid alternative fuel according to claim 1, characterized in that: Each discharge hopper is equipped with a weighing device to roughly measure the alternative fuel.

4. The storage and transportation system of solid alternative fuel according to claim 1, characterized in that: Each discharging hopper and unloading area is equipped with a level meter to monitor the material height.

5. The storage and transportation system of solid alternative fuel according to claim 1, characterized in that: The driving motors of the discharge hopper and the metering belt scale are both variable frequency motors, which adjust the amount of alternative fuel according to the operating conditions and incoming material conditions.

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