Cement kiln alternative fuel preparation device and preparation method thereof

Abstract

The invention discloses a cement kiln alternative fuel preparation device and a preparation method thereof, and relates to the technical field of alternative fuel preparation device.The cement kiln alternative fuel preparation device comprises a dehydrator shell, a sealing frame is movably arranged on the outer wall of the dehydrator shell, a spin-drying cylinder is rotatably arranged on the inner side of the sealing frame, and a guide rod is fixedly arranged on the inner bottom wall of the spin-drying cylinder; a first electric push rod is arranged at the top of the dehydrator shell, the extending end of the first electric push rod is inserted into the dehydrator shell and is fixedly provided with a pressing disc, the pressing disc is movably arranged on the guide rod in a sleeving mode, and a semicircular block is arranged on the inner side of the pressing disc. A first electric push rod pushes a pressing disc to move downwards, a semicircular block is promoted to be in sliding fit with the outer wall of a guide rod, accordingly, the guide rod is promoted to drive a spin-drying barrel to rotate, moisture in alternative fuel is thrown out under the action of centrifugal force, the alternative fuel is squeezed along with downward movement of the pressing disc, and therefore the moisture in the alternative fuel is squeezed out; therefore, the dehydration effect of the alternative fuel is better.

Description

Technical Field

[0001] The invention relates to the technical field of alternative fuel preparation devices, and in particular to an alternative fuel preparation device for a cement kiln and a preparation method thereof. Background Art

[0002] In the cement production process, the clinker preparation stage is the main link in energy consumption and emissions. The cement industry consumes a large amount of fossil energy, and its high carbon emissions have become an important factor restricting the development of the industry. Optimizing the energy structure and accelerating the use of alternative fuels have become important ways for the cement industry to save energy and reduce carbon emissions.

[0003] Alternative energy ranks fourth in the world's total energy consumption after coal, oil and natural gas. It plays an increasingly important role in the energy industry and is an important component of future sustainable energy. At present, the use of alternative fuels in my country's cement industry is relatively low, with a calorific value replacement rate of 3%-5%, which is much lower than that of developed countries in Europe and the United States. Using biomass straw, mushroom bags, papermaking waste, and automobile dismantlings as fuel for cement production can reduce the coal required for cement production, save energy and production costs, and help the cement industry's green and low-carbon transformation and circular economic development.

[0004] Some existing alternative fuels require the use of a dehydrator to dehydrate the alternative fuel during preparation. The dehydrator generally dehydrates the alternative fuel by rotating under the action of centrifugal force. However, the water in the alternative fuel in the middle of the dehydrator will adhere to the alternative fuel on the outside when it is detached, so the dehydration effect of the alternative fuel is not good. Summary of the invention

[0005] In order to improve the above-mentioned existing partial alternative fuels, the dehydrator needs to be used to dehydrate the alternative fuel during preparation. The dehydrator generally dehydrates the alternative fuel by rotating under the action of centrifugal force. However, the moisture of the alternative fuel in the middle of the dehydrator will adhere to the external alternative fuel when it is separated, so the dehydration effect of the alternative fuel is not good. The present invention provides a cement kiln alternative fuel preparation device and a preparation method thereof.

[0006] The present invention provides a cement kiln alternative fuel preparation device and a preparation method thereof, which adopts the following technical scheme: A cement kiln alternative fuel preparation device comprises a dehydrator shell, a sealing frame is movably provided on the outer wall of the dehydrator shell, a spin-drying drum is rotatably provided on the inner side of the sealing frame, a guide rod is fixedly provided on the inner bottom wall of the spin-drying drum, a first electric push rod is provided on the top of the dehydrator shell, the protruding end of the first electric push rod is inserted into the dehydrator shell and fixedly provided with a pressure plate, the pressure plate is movably sleeved on the guide rod, a semicircular block is provided on the inner side of the pressure plate, and the semicircular block is slidably matched with the outer wall of the guide rod.

[0007] Through the above technical solution, the sealing rack and the spin-drying drum are first pulled out from the dehydrating casing, so as to facilitate pouring the alternative fuel into the spin-drying drum, and then the spin-drying drum and the sealing rack are inserted into the dehydrating casing, and then the pressure plate is pushed down by the first electric push rod, and the semicircular block is caused to slide and cooperate with the outer wall of the guide rod, so that the guide rod drives the spin-drying drum to rotate, and the water in the alternative fuel is thrown out under the action of centrifugal force.

[0008] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, the dehydrator casing includes a shell and a sealing cover, the sealing cover is arranged on the top of the shell, and the sealing cover is connected to the shell by bolts.

[0009] Through the above technical solution, the housing is conveniently sealed by the sealing cover, and the sealing cover is fixedly mounted on the housing by bolts.

[0010] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, an inclined plate is fixedly provided on the inner bottom wall of the shell, and a drain pipe is fixedly inserted on the outer wall of the shell.

[0011] Through the above technical solution, the accumulated liquid in the shell can be guided through the inclined plate, and then the accumulated liquid can be discharged through the drain pipe.

[0012] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, the outer wall of the shell is provided with an opening for assembling a sealing frame, the sealing frame is movably inserted in the opening, and a second electric push rod is fixedly provided on the outer wall of the shell, and the protruding end of the second electric push rod passes through the shell and is fixedly connected to the outer wall of the sealing frame.

[0013] Through the above technical solution, the second electric push rod is used to push the sealing frame and the spin-drying drum to move, thereby prompting the sealing frame and the spin-drying drum to move to the outside of the shell, thereby facilitating the operator to pour the alternative fuel into the spin-drying drum.

[0014] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, a shaft sleeve is provided on the inner side of the sealing frame, the spin drying drum is rotatably arranged in the sealing frame through the shaft sleeve, a material guide ring is fixedly provided on the inner side of the sealing frame, the material guide ring is above the spin drying drum, and a plurality of filter holes are provided on the outer wall and the bottom surface of the spin drying drum.

[0015] Through the above technical solution, the spin-drying drum can rotate in the sealing frame through the shaft sleeve, and the water in the replacement material can be filtered out through the filter hole.

[0016] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, a spiral groove is formed at the upper end of the outer wall of the guide rod, and a vertical groove is formed at the lower end of the outer wall of the guide rod, and the vertical groove is connected to the spiral groove.

[0017] Through the above technical solution, when the pressure plate moves, it drives the semicircular block to move synchronously. When the semicircular block moves in the spiral groove, it prompts the guide rod to drive the spin dryer drum to rotate. When the semicircular block moves in the vertical groove, the guide rod and the spin dryer drum remain stationary.

[0018] Optionally, in the above-mentioned cement kiln alternative fuel preparation device, a through hole corresponding to the guide rod is opened on the pressure plate, the guide rod is movably inserted in the through hole, and the semicircular block is fixedly arranged in the through hole and slidably cooperates with the inner walls of the spiral groove and the vertical groove.

[0019] With the above technical solution, the guide rod can be inserted into the pressure plate through the through hole when the pressure plate moves downward.

[0020] Another technical solution proposed by the present invention is a cement kiln alternative fuel preparation device and a preparation method thereof, comprising the following steps: S101: First, the alternative fuel is unloaded into the alternative fuel storage pit by the crane grab, and then the alternative fuel is transported to the lower hopper above the crusher by the crane grab, and then the alternative fuel enters the crusher for crushing, and the crushed alternative fuel slides into the storage pit through the crusher discharge port; S102: After the alternative fuel undergoes aerobic fermentation, it is sent to a spin-drying drum by a driving grab bucket, and the spin-drying drum is inserted into a dehydrating machine shell at any time to dehydrate the alternative fuel. After dehydration, the alternative fuel is scattered and falls into a storage pit for short-term storage; S103: The materials are then transported to the finished product feeding bin by the crane grab, and transported to the hot plate furnace in the alternative fuel incineration workshop for incineration via a belt-type speed-adjustable metering feeder and a tubular belt conveyor; S104: The alternative fuel is fed into the hot plate furnace system after passing through a tubular belt conveyor and three air lock valves. The alternative fuel collects high-temperature tertiary air and part of the hot raw materials, so that the alternative fuel is fully burned in the furnace; S105: The high-temperature gas generated by the hot plate furnace, the ash after the combustion of waste materials, the raw materials and small-particle sintered slag, etc. all enter the decomposition furnace. A small amount of larger-particle sintered slag falls from the rising flue at the end of the kiln into the rotary kiln, and then is calcined into cement clinker through the rotary kiln system. The harmful elements of heavy metals are dissolved in the clinker. The flue gas after combustion is sent to the decomposition furnace, and the organic components are further decomposed or cracked by the decomposition furnace to achieve the complete decomposition of toxic organic matter. The exhaust gas at the end of the kiln is purified by the dust collection system and discharged from the chimney.

[0021] In summary, the present invention includes at least one of the following beneficial effects: The first electric push rod pushes the pressure plate downward, and causes the semicircular block to slide and cooperate with the outer wall of the guide rod, so that the guide rod drives the spin-drying drum to rotate, and the water in the alternative fuel is thrown out under the action of centrifugal force, and the alternative fuel is squeezed as the pressure plate moves downward, so that the water in the alternative fuel is squeezed out, so that the dehydration effect of the alternative fuel is better; The sealing frame and the spin-drying drum are pushed to move by the second electric push rod, thereby prompting the sealing frame and the spin-drying drum to move to the outside of the shell, thereby facilitating the operator to take out the alternative fuel from the spin-drying drum and pour in new alternative fuel for dehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a partial three-dimensional structural cross-sectional view of the present invention; Figure 3 It is a partial three-dimensional expanded structural cross-sectional view of the present invention.

[0023] In the figure: 1, dehydration casing; 11, shell; 12, sealing cover; 13, inclined plate; 14, drain pipe; 15, opening; 16, second electric push rod; 2, sealing frame; 21, bushing; 22, guide ring; 3, drying cylinder; 31, filter hole; 4, guide rod; 41, spiral groove; 42, vertical groove; 5, first electric push rod; 6, pressure plate; 61, through hole; 7, semicircular block. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 The present invention is described in further detail.

[0025] Please refer to the attached figure in the instruction manual Figure 1-3 An embodiment of the present invention is: a cement kiln alternative fuel preparation device, including a dehydrator shell 1, the dehydrator shell 1 includes a shell body 11 and a sealing cover 12, the sealing cover 12 is arranged on the top of the shell body 11, the sealing cover 12 is connected to the shell body 11 by bolts, the sealing cover 12 is used to facilitate the sealing of the shell body 11, and the sealing cover 12 is fixedly installed on the shell body 11 by bolts.

[0026] An inclined plate 13 is fixedly provided on the inner bottom wall of the shell 11 , and a drain pipe 14 is fixedly inserted on the outer wall of the shell 11 . The inclined plate 13 facilitates the diversion of the accumulated liquid in the shell 11 , and then the accumulated liquid is discharged through the drain pipe 14 .

[0027] A sealing frame 2 is movably provided on the outer wall of the dehydration casing 1, and a spin-drying drum 3 is rotatably provided on the inner side of the sealing frame 2. An opening 15 for assembling the sealing frame 2 is provided on the outer wall of the shell 11, and the sealing frame 2 is movably inserted into the opening 15. A second electric push rod 16 is fixedly provided on the outer wall of the shell 11, and the extended end of the second electric push rod 16 passes through the shell 11 and is fixedly connected to the outer wall of the sealing frame 2. The sealing frame 2 and the spin-drying drum 3 can be easily installed in the shell 11 through the opening 15, and the sealing frame 2 and the spin-drying drum 3 can be easily pushed to move through the second electric push rod 16, thereby prompting the sealing frame 2 and the spin-drying drum 3 to move to the outside of the shell 11, thereby facilitating the operator to pour the alternative fuel into the spin-drying drum 3, and then pull the sealing frame 2 and the spin-drying drum 3 to move into the opening 15 through the second electric push rod 16.

[0028] A shaft sleeve 21 is provided on the inner side of the sealing frame 2, and the spin-drying drum 3 is rotatably arranged in the sealing frame 2 through the shaft sleeve 21. A material guide ring 22 is fixedly provided on the inner side of the sealing frame 2, and the material guide ring 22 is above the spin-drying drum 3. The outer wall and the bottom surface of the spin-drying drum 3 are provided with a plurality of filter holes 31. The shaft sleeve 21 enables the spin-drying drum 3 to rotate in the sealing frame 2, and the material guide ring 22 reduces the possibility of the alternative fuel being accumulated on the spin-drying drum 3, and the filter holes 31 facilitate the filtration of moisture in the alternative material.

[0029] A guide rod 4 is fixedly provided on the inner bottom wall of the drying drum 3, and a first electric push rod 5 is provided on the top of the dehydration casing 1. The protruding end of the first electric push rod 5 is inserted into the dehydration casing 1 and is fixedly provided with a pressure plate 6. The pressure plate 6 is pushed downward by the first electric push rod 5, and as the pressure plate 6 moves downward, the alternative fuel is squeezed, thereby squeezing out the water in the alternative fuel.

[0030] The pressure plate 6 is movably sleeved on the guide rod 4, and a semicircular block 7 is provided on the inner side of the pressure plate 6. The semicircular block 7 is slidably matched with the outer wall of the guide rod 4. A spiral groove 41 is provided at the upper end of the outer wall of the guide rod 4, and a vertical groove 42 is provided at the lower end of the outer wall of the guide rod 4. The vertical groove 42 is connected with the spiral groove 41. When the pressure plate 6 moves, the semicircular block 7 is driven to move synchronously. When the semicircular block 7 moves in the spiral groove 41, the guide rod 4 drives the spin-drying drum 3 to rotate. When the semicircular block 7 moves in the vertical groove 42, the guide rod 4 and the spin-drying drum 3 remain stationary.

[0031] A through hole 61 corresponding to the guide rod 4 is provided on the pressure plate 6, and the guide rod 4 is movably inserted in the through hole 61. The semicircular block 7 is fixedly arranged in the through hole 61 and slidingly cooperates with the inner walls of the spiral groove 41 and the vertical groove 42. Through the through hole 61, the guide rod 4 can be inserted into the pressure plate 6 when the pressure plate 6 moves downward, and the semicircular block 7 is prompted to slide along the inner walls of the spiral groove 41 and the vertical groove 42.

[0032] In summary: first, the sealing frame 2 and the spin-drying drum 3 are pulled out from the dehydrating casing 1, so as to facilitate pouring the alternative fuel into the spin-drying drum 3, and then the spin-drying drum 3 and the sealing frame 2 are inserted into the dehydrating casing 1, and then the pressure plate 6 is pushed downward by the first electric push rod 5, and the semicircular block 7 is caused to slide with the outer wall of the guide rod 4, so that the guide rod 4 drives the spin-drying drum 3 to rotate, and under the action of centrifugal force, the water in the alternative fuel is thrown out, and as the pressure plate 6 moves downward, the alternative fuel is squeezed, thereby squeezing out the water in the alternative fuel.

[0033] In order to better demonstrate a cement kiln alternative fuel preparation device, this embodiment now proposes a cement kiln alternative fuel preparation device and a preparation method thereof, comprising the following steps: Step 1: First, the alternative fuel is unloaded into the alternative fuel storage pit by the crane grab, and then the alternative fuel is transported to the lower hopper above the crusher by the crane grab. Then the alternative fuel enters the crusher for crushing, and the crushed alternative fuel slides into the storage pit through the crusher discharge port; Step 2: After the alternative fuel undergoes aerobic fermentation, it is sent to the drying drum 3 by the crane grab bucket, and the drying drum 3 is inserted into the dehydration machine housing 1 at any time to dehydrate the alternative fuel. After dehydration, the alternative fuel is scattered and falls into the storage pit for short-term storage; Step 3: Then the material is sent to the finished product feeding bin by the crane grab, and then transported to the hot plate furnace of the alternative fuel incineration workshop for incineration through the belt speed regulating metering feeder and the tubular belt conveyor; Step 4: The alternative fuel is fed into the hot plate furnace system after passing through the tubular belt conveyor and three air lock valves. The alternative fuel collects the high-temperature tertiary air and part of the hot raw materials, so that the alternative fuel is fully burned in the furnace; Step 5: The high-temperature gas generated by the hot plate furnace, the ash after the combustion of waste materials, the raw materials and small-particle sintered slag all enter the decomposition furnace. A small amount of larger-particle sintered slag falls from the rising flue at the end of the kiln into the rotary kiln, and then is calcined into cement clinker through the rotary kiln system. The harmful elements of heavy metals are dissolved in the clinker. The flue gas after combustion is sent to the decomposition furnace, and the organic components are further decomposed or cracked by the decomposition furnace to achieve the complete decomposition of toxic organic matter. The exhaust gas at the end of the kiln is purified by the dust collection system and discharged from the chimney.

[0034] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cement kiln alternative fuel preparation device, comprising a dehydrator housing (1), characterized in that: A sealing frame (2) is movably provided on the outer wall of the dehydrating machine housing (1), a drying drum (3) is rotatably provided on the inner side of the sealing frame (2), and a guide rod (4) is fixedly provided on the inner bottom wall of the drying drum (3); A first electric push rod (5) is arranged on the top of the dehydrator housing (1); the protruding end of the first electric push rod (5) is inserted into the dehydrator housing (1) and fixedly provided with a pressure plate (6); the pressure plate (6) is movably sleeved on the guide rod (4); a semicircular block (7) is arranged on the inner side of the pressure plate (6); the semicircular block (7) is slidably matched with the outer wall of the guide rod (4).

2. The cement kiln alternative fuel preparation device according to claim 1, characterized in that: The dehydrator casing (1) comprises a casing (11) and a sealing cover (12); the sealing cover (12) is arranged on the top of the casing (11); and the sealing cover (12) is connected to the casing (11) via bolts.

3. The cement kiln alternative fuel preparation device according to claim 2, characterized in that: An inclined plate (13) is fixedly provided on the inner bottom wall of the shell (11), and a liquid discharge pipe (14) is fixedly inserted into the outer wall of the shell (11).

4. The cement kiln alternative fuel preparation device according to claim 3, characterized in that: The outer wall of the housing (11) is provided with an opening (15) for assembling the sealing frame (2), the sealing frame (2) being movably inserted into the opening (15), and the outer wall of the housing (11) is fixedly provided with a second electric push rod (16), the extended end of the second electric push rod (16) passing through the housing (11) and being fixedly connected to the outer wall of the sealing frame (2).

5. The cement kiln alternative fuel preparation device according to claim 1, characterized in that: A shaft sleeve (21) is arranged on the inner side of the sealing frame (2); the spin drying cylinder (3) is rotatably arranged in the sealing frame (2) via the shaft sleeve (21); a material guide ring (22) is fixedly arranged on the inner side of the sealing frame (2); the material guide ring (22) is above the spin drying cylinder (3); and a plurality of filter holes (31) are provided on the outer wall and the bottom surface of the spin drying cylinder (3).

6. The cement kiln alternative fuel preparation device according to claim 1, characterized in that: The upper end of the outer wall of the guide rod (4) is provided with a spiral groove (41), and the lower end of the outer wall of the guide rod (4) is provided with a vertical groove (42), and the vertical groove (42) is connected to the spiral groove (41).

7. The cement kiln alternative fuel preparation device according to claim 6, characterized in that: The pressure plate (6) is provided with a through hole (61) corresponding to the guide rod (4), the guide rod (4) is movably inserted in the through hole (61), and the semicircular block (7) is fixedly arranged in the through hole (61) and slidably cooperates with the inner walls of the spiral groove (41) and the vertical groove (42).

8. A method for preparing a cement kiln alternative fuel preparation device according to any one of claims 1 to 7, comprising the following steps: S101: First, the alternative fuel is unloaded into the alternative fuel storage pit by the crane grab, and then the alternative fuel is transported to the lower hopper above the crusher by the crane grab, and then the alternative fuel enters the crusher for crushing, and the crushed alternative fuel slides into the storage pit through the crusher discharge port; S102: After the alternative fuel has been aerobically fermented, it is sent to the spin-drying drum (3) by the crane grab bucket, and the spin-drying drum (3) is inserted into the dehydrating housing (1) at any time to dehydrate the alternative fuel. The dehydrated alternative fuel is broken up and falls into a storage pit for short-term storage; S103: The materials are then transported to the finished product feeding bin by the crane grab, and transported to the hot plate furnace in the alternative fuel incineration workshop for incineration via a belt-type speed-adjustable metering feeder and a tubular belt conveyor; S104: The alternative fuel is fed into the hot plate furnace system after passing through a tubular belt conveyor and three air lock valves. The alternative fuel collects high-temperature tertiary air and part of the hot raw materials, so that the alternative fuel is fully burned in the furnace; S105: The high-temperature gas generated by the hot plate furnace, the ash after the combustion of waste materials, the raw materials and small-particle sintered slag all enter the decomposition furnace. A small amount of larger-particle sintered slag falls from the rising flue at the end of the kiln into the rotary kiln, and then is calcined into cement clinker through the rotary kiln system. The harmful elements of heavy metals are dissolved in the clinker. The flue gas after combustion is sent to the decomposition furnace, and the organic components are further decomposed or cracked by the decomposition furnace to achieve the complete decomposition of toxic organic matter. The exhaust gas at the end of the kiln is purified by the dust collection system and discharged from the chimney.

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