CN216191944U

CN216191944U - Environment-friendly lime kiln

Info

Publication number: CN216191944U
Application number: CN202122253657.7U
Authority: CN
Inventors: 刘龙福
Original assignee: Jiangxi Fudeli Calcium Carbonate Industry Co ltd
Current assignee: Jiangxi Fudeli Calcium Carbonate Industry Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-04-05
Anticipated expiration: 2031-09-17

Abstract

The utility model relates to the technical field of lime kilns, and particularly discloses an environment-friendly lime kiln which comprises a kiln, wherein a kiln seat for fixing the kiln is fixedly connected to the bottom surface of the kiln, a heating plate is slidably connected to the inner bottom of the kiln, springs are symmetrically and fixedly connected to the bottom surface of the heating plate, the free ends of the springs are fixedly connected to the inner bottom surface of the kiln, a spirally-surrounded preheating water channel is formed in the side wall of the kiln above the heating plate, a heat exchange water tank is detachably connected to the upper surface of the kiln, a water pipe is arranged in the heat exchange water tank, a gas purifying device is detachably connected to the upper surface of the heat exchange water tank, a gas outlet of the gas purifying device is in threaded connection with a vent pipe, and the free end of the vent pipe is communicated with the inside of the kiln.

Description

Environment-friendly lime kiln

Technical Field

The application relates to the technical field of lime kilns, and particularly discloses an environment-friendly lime kiln.

Background

Lime is the cementing material which is the earliest used by human beings, and is widely used in the industries of buildings, instruments, medicines, clothes, electronic telecommunication, leather, textiles and the like. When the lime is fired in a traditional lime kiln, limestone is directly put into a kiln firing furnace for calcination, and high-temperature kiln firing tail gas containing a large amount of toxic gas and dust is directly discharged into the atmosphere without treatment or after simple treatment.

The Chinese utility model CN201721817437.X discloses a lime kiln waste gas heat utilization device, which is characterized by comprising a kiln gas pipe, a cold water pipe, a hot water pipe, a water pump and a water tank; the kiln gas pipe is provided with an upper cover plate and a lower cover plate with round holes, and a plurality of gas pipes are welded between the upper cover plate and the lower cover plate; the air pipe corresponds to the position of the cover plate round hole; one end of the cold water pipe is connected into the kiln gas pipe, and the other end of the cold water pipe is connected into the water tank; one end of the hot water pipe is connected to the kiln gas pipe, and the other end of the hot water pipe is connected to the water tank; the water pump is arranged on the hot water pipe. This utility model discloses in the heat utilization of collecting incomplete, and tail gas treatment is incomplete, cause the gas that discharges out to reach the environmental protection standard, consequently, the inventor proposes an environmental protection limekiln for solve the unable make full use of's of high temperature tail gas that current limekiln produced problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that high-temperature tail gas generated by the existing lime kiln cannot be fully utilized.

In order to achieve the above object, the present invention provides the following basic solutions:

an environmental protection limekiln which is characterized in that: the kiln comprises a kiln, the top surface of kiln is opened there is the feed inlet, kiln inner wall is equipped with gyration feeding mechanism, set up the preheating water course that the spiral encircleed in the lateral wall of kiln, the interior bottom sliding connection of kiln has the hot plate, the bottom surface symmetry rigid coupling that the feed inlet was kept away from to the hot plate has the spring, the equal rigid coupling of free end of spring is at the interior bottom surface of kiln, the top surface that the hot plate was kept away from to the kiln can be dismantled and be connected with heat exchange water tank, be equipped with the water pipe in the heat exchange water tank, water piping connection is in the entry and the exit of preheating the water course, the top surface that heat exchange water tank kept away from the kiln can be dismantled and be connected with the air purification device, the export of air purification device can be dismantled and be connected with the breather pipe, the free end of breather pipe can be dismantled and connect the bottom in the kiln.

The principle and effect of this basic scheme lie in:

1. compared with the prior art, the spiral-surrounding preheating water channel is formed in the wall of the kiln, a large amount of high-temperature gas in the kiln is sucked into the heat exchange water tank through the first air inlet valve, water in the water pipe is heated, then the water flows into the preheating water channel, and the limestone on the rotary feeding mechanism is preheated, so that the heat of the high-temperature gas in the kiln is fully utilized, the limestone to be calcined is preheated, the product quality is higher, and the problem that the generated high-temperature gas cannot be fully utilized is solved.

2. Compared with the prior art, the heating plate and the spring are used, when the materials on the rotary feeding mechanism are placed on the heating plate, the spring is stressed with the fact that the quantity of limestone on the heating plate is increased, the heating plate moves downwards, the heating plate is heated to calcine the limestone, after the limestone on the heating plate is calcined, the generated lime enters the bottom of the kiln through the through hole in the surface of the heating plate, the quantity of the materials on the heating plate is reduced, and the spring can rise to the original position to continue to be connected with the next batch of materials.

3. Compared with the prior art, after the tail gas is treated, the tail gas capable of being discharged is introduced into the calcining position of the kiln, negative pressure can be formed in the kiln when ash is discharged, lime can be lifted, the environment is affected, the health of workers is damaged, the tail gas capable of being discharged is introduced into the kiln, the negative pressure condition is relieved, and the environment protection effect is enhanced.

Furthermore, the heating plate is provided with a plurality of uniformly distributed ash filtering holes which are conical through holes. The lime filtering holes are formed, so that the calcined lime can fall into the bottom of the kiln through the lime filtering holes, and the lime filtering holes are conical and are not easy to block.

Furthermore, a first through hole communicated with the heat exchange water tank is formed in the top of the kiln, and a first air inlet valve is detachably connected to one side, close to the kiln, of the first through hole. And the first through hole and the first air inlet valve are arranged for sucking high-temperature gas in the kiln into the heat exchange water tank.

Furthermore, a second through hole communicated with the air purifying device is formed in the top surface of the heat exchange water tank, and a second air inlet valve is detachably connected to one side, close to the air purifying device, of the second through hole. And a second through hole and a second air inlet valve are arranged for sucking the cooled high-temperature gas into a gas purifying device for tail gas purification.

Further, the inside desulfurization layer that is used for purifying kiln tail gas that is equipped with of gas purification device. The desulfurization layer is used for purifying tail gas and reaches the emission standard.

Further, an air outlet of the air purifying device is provided with an air extracting pump. The air extraction pump is used for introducing the tail gas which can be discharged into the kiln.

Furthermore, a water pump is arranged at the position where the water pipe is communicated with the outlet pipe of the preheating water channel, and the water pump is used for pumping water of the water outlet pipe into the heat exchange water tank, so that the purpose of recycling is achieved.

Furthermore, a guide chute and a guide rod for the sliding of the heating plate are arranged in the kiln. The heating plate slides in the kiln, so a guide chute and a guide rod are arranged, and the heating plate can slide.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a general schematic view of an environment-friendly lime kiln according to an embodiment of the present application;

FIG. 2 shows a cross-sectional view of an environmentally friendly lime kiln according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a middle heating plate of an environment-friendly lime kiln according to an embodiment of the application;

FIG. 4 shows a sectional view of a heating plate in an environment-friendly lime kiln according to an embodiment of the present application.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Reference numerals in the drawings of the specification include: the device comprises a kiln 1, a preheating water channel 2, a rotary feeding mechanism 3, a water outlet pipe 4, a water suction pump 5, a feeding hole 6, a first air inlet valve 7, a heat exchange water tank 8, a water pipe 9, an air purifying device 10, a second air inlet valve 11, a desulfurization layer 12, an air suction pump 13, a vent pipe 14, a heating plate 15, a sliding block 151, a conical through hole 152, a spring 16, a sliding rod 17 and a kiln seat 18.

Examples are shown in fig. 1, 2, 3 and 4:

the utility model provides an environmental protection lime kiln, including kiln 1, the bottom surface welding of kiln 1 has the kiln seat 18 that is used for fixed kiln 1, kiln 1's top surface is opened there is feed inlet 6, kiln seat 18's lateral wall symmetry is opened there is the spout of leading, it has slide bar 17 to lead equal rigid coupling in the spout, be equipped with in the kiln seat 18 with kiln seat 18 sliding connection's hot plate 15, it has the even toper through-hole 152 of a plurality of distributions to open in hot plate 15, as shown in fig. 4, hot plate 15's left and right sides wall rigid coupling has slider 151, as shown in fig. 3, make slider 151 can slide on the connecting rod, hot plate 15's bottom surface symmetry rigid coupling has the spring 16 of two rigid couplings bottom in kiln 1, it is specific: limestone entering the kiln 1 through the feed inlet 6 slowly moves towards the bottom of the kiln 1 through the rotary feeding mechanism 3 and finally falls onto the heating plate 15, when the limestone on the heating plate 15 reaches a certain amount, the spring 16 is pressed to move downwards, the heating plate 15 is heated immediately, and the limestone is calcined, when the calcined lime falls into the bottom of the kiln 1 from the tapered through hole 152 on the heating plate 15, the weight of the limestone on the heating plate 15 is reduced, the spring 16 is reset, the heating plate 15 is reset, and the next batch of lime continues to be connected, as shown in fig. 2, a preheating water channel 2 is formed in the side wall of the kiln 1 above the heating plate 15, and a heat exchange water tank 8 is connected to the top surface of the kiln 1 through screws.

The top surface of the kiln 1 is provided with a first through hole communicated with a heat exchange water tank 8, a first air inlet valve 7 is arranged at the first through hole in the kiln 1, so that high-temperature gas generated in the kiln 1 enters the heat exchange water tank 8, a water pipe 9 is arranged in the water tank, the lower end of the water pipe 9 is communicated with a water inlet of a preheating water channel 2, water heated by the high-temperature gas enters the preheating water channel 2, limestone on the rotary feeding mechanism 3 is preheated, the tail end of the water pipe 9 in the water outlet pipe 4 and the preheating water channel 2 is communicated, a water suction pump 5 is arranged on the water outlet pipe 4, so that water in the water outlet pipe 4 can return to the heat exchange water tank 8 to be heated again, the purpose of recycling is achieved, and the top surface of the heat exchange water tank 8 is in screwed connection with a gas purifying device 10.

The top surface of the heat exchange water tank 8 is provided with a second through hole communicated with the gas purifying device 10, a second air inlet valve 11 is arranged at the second through hole in the gas purifying device 10, so that the cooled tail gas enters the gas purifying device 10, a desulfurization layer 12 for purifying the tail gas is arranged in the gas purifying device 10, so that the tail gas reaches the emission standard, an air extracting pump 13 is arranged at the outlet of the gas purifying device 10, the outlet of the gas purifying device 10 is in threaded connection with a vent pipe 14 communicated with the inside of the kiln 1, as shown in fig. 1, the vent pipe 14 penetrates into the inside of the kiln 1 and is in threaded connection, the vent pipe 14 is used for reducing the negative pressure effect generated when the kiln 1 is used for discharging the lime, and the lime discharging is more stable.

The specific implementation mode is as follows: firstly, limestone entering the kiln 1 through a feed inlet 6 moves towards the bottom of the kiln 1 through a rotary feeding mechanism 3, and is preheated through a preheating water channel 2 in the wall of the kiln 1 in the moving process, so that the limestone to be calcined reaches an ideal state, secondly, when the limestone is placed on a heating plate 15 to reach a certain weight, a spring 16 is lowered to be calcined, the calcined limestone falls into the bottom of the kiln 1 through a lime filtering hole on the heating plate 15 after being changed into lime, the weight on the heating plate 15 is reduced, the spring 16 is reset to continue to receive materials, thirdly, a first air inlet valve 7 and a second air inlet valve 11 are opened to heat water in a water pipe 9 and enter the preheating water channel 2 to preheat the materials on the rotary feeding mechanism 3, and a water suction pump 5 is opened to enable the water in a water outlet pipe 4 to enter the water pipe 9 in a heat exchange water tank 8 again, and in the fourth step, the air pump 13 is started, so that the tail gas in the gas purifying device 10 enters the vent pipe 14 after reaching the emission standard through the desulphurization layer 12 and then enters the kiln 1, and the lime is prevented from being disordered by the negative pressure effect caused by ash discharge, so that the environment is polluted and the health of workers is damaged.

The utility model is used for solving the problem that the high-temperature tail gas generated by the existing lime kiln can not be fully utilized.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. An environmental protection limekiln which is characterized in that: the kiln comprises a kiln, the top surface of kiln is opened there is the feed inlet, be equipped with gyration feeding mechanism in the kiln, set up the spiral in the lateral wall of kiln and encircle preheating the water course, sliding connection has the hot plate in the kiln, the symmetry rigid coupling has the spring between hot plate and the bottom of the kiln, the top surface that the hot plate was kept away from to the kiln can be dismantled and be connected with the heat exchange water tank, be equipped with the water pipe in the heat exchange water tank, the water pipe spiral sets up among preheating the water course, the top surface that the kiln was kept away from to the heat exchange water tank can be dismantled and be connected with the air purification device, the export of air purification device can be dismantled and be connected with the breather pipe, the free end of breather pipe can be dismantled and connect in the kiln.

2. The environment-friendly lime kiln as recited in claim 1, wherein the heating plate is provided with a plurality of uniformly distributed ash filtering holes, and the ash filtering holes are tapered through holes.

3. The environment-friendly lime kiln as claimed in claim 1, wherein a first through hole is formed in the top of the kiln and is connected with the heat exchange water tank, and a first air inlet valve is detachably connected to one side of the first through hole, which is close to the kiln.

4. The environment-friendly lime kiln as recited in claim 1, wherein the top surface of the heat exchange water tank is provided with a second through hole communicated with the gas purification device, and a second air inlet valve is detachably connected to one side of the second through hole close to the gas purification device.

5. The environment-friendly lime kiln as recited in claim 1, wherein a desulfurization layer for purifying kiln tail gas is arranged inside the gas purification device.

6. The environment-friendly lime kiln as recited in claim 5, wherein the air outlet of the air cleaning device is provided with an air extracting pump.

7. The environment-friendly lime kiln as recited in claim 1, wherein a water pump is provided at the connection between the water pipe and the water outlet pipe of the preheating water passage.

8. The environment-friendly lime kiln as recited in claim 1, wherein the kiln is internally provided with a guide chute and a guide rod for sliding the heating plate.