Animal carcass incineration treatment system and treatment method

Abstract

The present invention proposes an animal carcass incineration treatment system, which belongs to the technical field of garbage treatment, including a feeding system, an incineration system, a heat exchange system, a rapid cooling spray system, a dry deacidification system, a dust removal system, an air supply system, an induced draft system and a wet deacidification system. Under sealed conditions, pyrolysis and incineration, rapid cooling and neutralization, deacidification and dust removal are completely discharged as purified gas. At the same time, the system is linked with a heat recovery device to recycle a large amount of heat generated by the system, thereby reducing operating costs. The present invention also proposes an animal carcass incineration treatment application method. The technical solution of the present invention can realize automatic control, continuous and stable operation, low operating cost, high heat recovery rate, no harmful gas emissions, safety and reliability, and good economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage disposal, and in particular to an animal carcass incineration disposal system and a disposal method. Background Art

[0002] With the rapid development of animal husbandry, the scale and intensification of animal husbandry have been continuously improved. The increase in animal tissues, dead pigs and abnormal deaths of livestock and poultry has become a prominent problem affecting the current food safety, animal disease prevention and control and the sustainable development of animal husbandry. If not handled properly, it will also cause serious environmental pollution and infectious diseases, directly threatening social public health and safety. How to effectively deal with dead animals has become a new problem encountered by the current development of animal husbandry and even social development. It is urgent to find a safe, effective, environmentally friendly and economically feasible technology for harmless disposal of dead animals. Summary of the invention

[0003] In order to solve the problems of the prior art, the present invention discloses an animal carcass incineration treatment system, including a feeding system, an incineration system, a heat exchange system, a quenching spray system, a dry deacidification system, a dust removal system, an air supply system, an induced draft system and a wet deacidification system;

[0004] The feeding system comprises a crusher that breaks the animal carcasses into pieces, and a bucket elevator that transports the animal carcass pieces to a hydraulic pushing device for pushing;

[0005] The incineration system includes a rotary kiln, a secondary combustion chamber and a burner, wherein the rotary kiln is connected to the secondary combustion chamber, and the burner is used to provide combustible gas for the rotary kiln and the secondary combustion chamber to be incinerated. The rotary kiln includes a horizontal cylindrical barrel, and a reduction motor and a supporting wheel mechanism for driving the barrel to rotate are provided at the lower part of the barrel. A kiln head connected to a hydraulic pushing device is provided at the front end of the barrel, and the kiln head is connected to the barrel through a front sealing device, and the rear end of the barrel is connected to the kiln tail through a rear sealing device. The secondary combustion chamber includes a combustion chamber, and an emergency exhaust chimney is provided at the top of the combustion chamber;

[0006] The heat exchange system is a shell-and-tube heat exchanger, which is connected to a cold water system for heat exchange to obtain high-temperature steam to provide heat energy for production and life. The cold water system is provided with a water softening device;

[0007] The quenching spray system includes a quenching tower, an alkali liquid pump and an atomizing spray gun. The alkali liquid pump sprays the prepared alkali liquid stored in the alkali liquid tank to the high-temperature acidic gas in the quenching tower through the atomizing spray gun to perform a neutralization reaction and rapidly cool down the gas. The tail gas generated by the reaction is discharged through an adjustable valve provided at the discharge port of the quenching tower. The residue generated by the reaction is collected through an ash collector provided at the bottom of the quenching tower.

[0008] The dry deacidification system comprises a dry adsorption tower, a slaked lime injection device and an activated carbon injection device. The tail gas introduced into the dry adsorption tower is deacidified and desulfurized by the slaked lime injection device, and the dioxins and heavy metals in the tail gas are adsorbed by the activated carbon injection device.

[0009] The dust removal system includes a bag filter, through which solid particles and ash in the exhaust gas are removed. The bag filter is provided with a pulse cleaner for cleaning the filter bags and a constant temperature heating device for maintaining the temperature;

[0010] The wet deacidification system comprises at least one absorption tower body, wherein a spray head is arranged in the absorption tower body, and the spray head sprays the alkali solution in the alkali solution circulation pool into the absorption tower body through a spray pump for deacidification and desulfurization of tail gas;

[0011] The air supply system provides sufficient oxygen for the rotary kiln to continue burning, which is used to increase the smoke temperature and the burnout rate. At the same time, the heated secondary air is introduced into the secondary combustion chamber through the air supply system to compensate for the oxygen supply.

[0012] The induced draft system includes an induced draft fan, which is respectively connected to the outlets of the dry adsorption tower and the bag filter for introducing the tail gas into the absorption tower body.

[0013] Furthermore, it also includes a control system, which includes a central processing unit module, a sensor module, a communication module and a human-computer interaction module, and the sensor module, the communication module and the human-computer interaction module are all connected to the central processing unit module.

[0014] Furthermore, it also includes a denitrification system connected to the heat exchange system, the denitrification system includes an ammonia water storage, an ammonia water solution metering and distributing device and an injector. The ammonia water solution in the ammonia water storage is transported by a liquid supply pump. A dilution water circuit is provided at the outlet of the liquid supply pump. The ammonia water solution metering and distributing device dilutes the ammonia water solution, and the diluted ammonia water solution is then delivered to the injector via a stainless steel heating pipe.

[0015] Furthermore, a control valve is provided at the bottom of the emergency exhaust chimney, and the control valve is used to automatically open the valve to connect the combustion chamber with the emergency exhaust chimney when the system is powered off.

[0016] Furthermore, a slag remover is provided at the bottom of the combustion chamber for collecting the slag produced in the combustion chamber. A water cooling device is provided in the slag remover. The water cooling device is used to reduce the temperature of the slag to below 80°C and discharge it through a conveying device.

[0017] Furthermore, the kiln head, cylinder and kiln tail are tilted downward by 1 to 3 degrees along a straight line so as to move the body fragments from the kiln head to the kiln tail during the incineration process, and the cylinder speed is 0.2 to 2.0 r / min.

[0018] Furthermore, the secondary combustion chamber also includes an explosion-proof device arranged at the bottom of the combustion chamber, and the explosion-proof device is used to open and release the pressure when the pressure in the combustion chamber exceeds a preset value.

[0019] Furthermore, the bag filter has an input port and an output port, and a bypass smoke pipe is provided between the input port and the output port.

[0020] Furthermore, it also includes a chimney and a detection device arranged on the chimney, and the chimney is used to discharge the exhaust gas to the outside.

[0021] The present invention discloses a method for incinerating animal carcasses, comprising the following steps:

[0022] S1. Turn on the control system and implement system self-check;

[0023] S2. Turn on the induced draft fan to achieve system induced draft;

[0024] S3. Turn on the air supply fan to supply air to the system;

[0025] S4. Turn on the burners of the rotary kiln and the secondary combustion chamber in sequence, maintain the temperature in the rotary kiln between 850-1050°C, and maintain the temperature in the secondary combustion chamber not less than 1100°C;

[0026] S5. Open the slag remover and discharge the residue produced by the secondary combustion chamber through the conveyor;

[0027] S6. Start the shell-and-tube heat exchanger, which is connected to the cold water system for heat exchange to obtain high-temperature steam for production and life. The exhaust gas with a temperature of not less than 1100°C is passed into the shell-and-tube heat exchanger for heat exchange, and the output exhaust gas temperature is 500-550°C after the exhaust gas is heated;

[0028] S7. Start the atomizing spray gun, slaked lime spray device, activated carbon spray device, bag filter, and spray head installed in the absorption tower of the quench spray system in sequence to deacidify and desulfurize the tail gas, and remove harmful substances such as residual dioxins, heavy metals, and dust particles;

[0029] S8. Turn on the ammonia solution metering and dispensing device and the injector in the denitration system, and inject ammonia solution into the exhaust gas for reduction reaction to achieve exhaust denitration;

[0030] S9. Turn on the detection device to analyze the exhaust gas composition. If it meets the environmental protection standard, the exhaust gas is discharged into the atmosphere. Otherwise, it returns to step S7 through the induced draft fan and continues processing until it meets the environmental protection standard.

[0031] The implementation of the animal carcass incineration treatment system and treatment method proposed by the present invention has the following beneficial technical effects:

[0032] The technical solution of the present invention can realize automatic control, continuous and stable operation, low operation cost, high heat recovery rate, no harmful gas emission, safety and reliability, and good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 This is a schematic diagram of the structure of an animal carcass incineration system according to an embodiment of the present invention;

[0035] Figure 2 This is a structural diagram of a rotary kiln in an animal carcass incineration system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1 and Figure 2 , an embodiment of the present invention, an animal carcass incineration treatment system, comprising a feeding system 1, an incineration system 2, a heat exchange system 3, a quenching spray system 4, a dry deacidification system 5, a dust removal system 6, an air supply system 8, an induced draft system 9 and a wet deacidification system 7;

[0038] The feeding system 1 is a crusher that breaks the animal carcasses into pieces, and a bucket elevator conveys the animal carcass pieces to a hydraulic pushing device for pushing;

[0039] The incineration system 2 includes a rotary kiln 21, a secondary combustion chamber 22 and a burner. The rotary kiln 21 is connected to the secondary combustion chamber 22. The burner is used to provide combustible gas for the rotary kiln 21 and the secondary combustion chamber 22. The rotary kiln 21 includes a horizontal cylindrical barrel 211. The lower part of the barrel 211 is provided with a reduction motor 212 and a supporting wheel mechanism 213 for driving the barrel to rotate. The front end of the barrel 211 is provided with a kiln head 214 connected to a hydraulic pushing device. The kiln head 214 is connected to the barrel 211 through a front sealing device 215. The rear end of the barrel 211 is connected to a kiln tail 217 through a rear sealing device 216. The secondary combustion chamber 22 includes a combustion chamber 221. The top of the combustion chamber 221 is provided with an emergency exhaust chimney 222.

[0040] The heat exchange system 3 is a shell-and-tube heat exchanger, which is connected to a cold water system for heat exchange to obtain high-temperature steam to provide heat energy for production and life. The cold water system is provided with a water softening device;

[0041] The quenching spray system 4 includes a quenching tower 41, an alkali pump 42 and an atomizing spray gun 43. The alkali pump 42 sprays the prepared alkali stored in the alkali tank to the high-temperature acidic gas in the quenching tower 41 through the atomizing spray gun 43 to perform a neutralization reaction and rapidly cool down the gas. The tail gas generated by the reaction is discharged through an adjustable valve provided at the discharge port of the quenching tower 41. The residue generated by the reaction is collected through an ash collector 411 provided at the bottom of the quenching tower 41.

[0042] The dry deacidification system 5 comprises a dry adsorption tower 51, a slaked lime injection device 52 and an activated carbon injection device 53. The tail gas introduced into the dry adsorption tower 51 is deacidified and desulfurized by the slaked lime injection device 52, and dioxins and heavy metals in the tail gas are adsorbed by the activated carbon injection device 53.

[0043] The dust removal system 6 includes a bag filter 61, through which solid particles and ash in the exhaust gas are removed. The bag filter 61 is provided with a pulse cleaner 62 for cleaning the filter bag and a constant temperature heating device 63 for maintaining the temperature;

[0044] The wet deacidification system 7 comprises an absorption tower body 71, in which a spray head 72 is arranged. The spray head 72 sprays the alkali solution in the alkali solution circulation pool 74 into the absorption tower body 71 through a spray pump 73 for deacidification and desulfurization of tail gas.

[0045] The air supply system 8 provides sufficient oxygen for the rotary kiln 21 to continue burning, so as to increase the smoke temperature and the burnout rate. At the same time, the heated secondary air is introduced into the secondary combustion chamber 22 through the air supply system 8 to compensate for the oxygen supply.

[0046] The induced draft system 9 includes an induced draft fan, which is connected to the outlets of the dry adsorption tower 51 and the bag filter 61 respectively to introduce the exhaust gas into the absorption tower body 71 .

[0047] According to a specific embodiment, the animal carcass incineration system also includes a control system, which includes a central processing unit module, a sensor module, a communication module and a human-computer interaction module, and the sensor module, communication module and human-computer interaction module are all connected to the central processing unit module.

[0048] According to a specific embodiment, the animal carcass incineration treatment system also includes a denitrification system connected to the heat exchange system 3, and the denitrification system includes an ammonia water storage, an ammonia water solution metering and dispensing device and an injector. The ammonia water solution in the ammonia water storage is transported by a liquid supply pump, and a dilution water circuit is provided at the outlet of the liquid supply pump. The ammonia water solution metering and dispensing device dilutes the ammonia water solution, and the diluted ammonia water solution is then sent to the injector via a stainless steel heating pipe.

[0049] According to a specific embodiment, a control valve is provided at the bottom of the emergency exhaust chimney 222 , and the control valve is used to automatically open the valve to connect the combustion chamber 221 with the emergency exhaust chimney 222 when the system loses power.

[0050] According to a specific embodiment, a slag remover is provided at the bottom of the combustion chamber 221 for collecting the slag produced in the combustion chamber. A water cooling device is provided inside the slag remover for reducing the temperature of the slag to below 80°C and discharging it through a conveying device.

[0051] According to a specific embodiment, the kiln head 214, the cylinder 211 and the kiln tail 217 are inclined downward by 2 degrees along a straight line for movement of body fragments from the kiln head 214 to the kiln tail 217 during the incineration process, and the cylinder speed is 0.2 to 2.0 r / min.

[0052] According to a specific embodiment, the secondary combustion chamber 22 further includes an explosion preventer disposed at the bottom of the combustion chamber, and the explosion preventer is used to open and release the pressure when the pressure in the combustion chamber exceeds a preset value.

[0053] According to a specific embodiment, the bag filter 61 has an input port 611 and an output port 612 , and a bypass smoke duct 613 is provided between the input port 611 and the output port 612 .

[0054] According to a specific embodiment, the animal carcass incineration treatment system further includes a chimney 10 and a detection device disposed on the chimney 10, wherein the chimney 10 is used to discharge exhaust gas to the outside.

[0055] An embodiment of the present invention provides a method for incinerating animal carcasses, comprising the steps of:

[0056] S1. Turn on the control system and implement system self-check;

[0057] S2. Turn on the induced draft fan to achieve system induced draft;

[0058] S3. Turn on the air supply fan to supply air to the system;

[0059] S4. Turn on the burners of the rotary kiln and the secondary combustion chamber in sequence, maintain the temperature in the rotary kiln between 850-1050°C, and maintain the temperature in the secondary combustion chamber not less than 1100°C;

[0060] S5. Open the slag remover and discharge the residue produced by the secondary combustion chamber through the conveyor;

[0061] S6. Start the shell-and-tube heat exchanger, which is connected to the cold water system for heat exchange to obtain high-temperature steam for production and life. The exhaust gas with a temperature of not less than 1100°C is passed into the shell-and-tube heat exchanger for heat exchange, and the output exhaust gas temperature is 500-550°C after the exhaust gas is heated;

[0062] S7. Start the atomizing spray gun, slaked lime spray device, activated carbon spray device, bag filter, and spray head installed in the absorption tower of the quench spray system in sequence to deacidify and desulfurize the tail gas, and remove harmful substances such as residual dioxins, heavy metals, and dust particles;

[0063] S8. Turn on the ammonia solution metering and dispensing device and the injector in the denitration system, and inject ammonia solution into the exhaust gas for reduction reaction to achieve exhaust denitration;

[0064] S9. Turn on the detection device to analyze the exhaust gas composition. If it meets the environmental protection standard, the exhaust gas is discharged into the atmosphere. Otherwise, it returns to step S7 through the induced draft fan and continues processing until it meets the environmental protection standard.

[0065] The implementation of the animal carcass incineration treatment system and treatment method proposed by the present invention has the following beneficial technical effects:

[0066] The technical solution of the present invention can realize automatic control, continuous and stable operation, low operation cost, high heat recovery rate, no harmful gas emission, safety and reliability, and good economic benefits.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An animal carcass incineration system, characterized in that: Including feeding system, incineration system, heat exchange system, quenching spray system, dry deacidification system, dust removal system, air supply system, induced draft system and wet deacidification system; The feeding system comprises a crusher that breaks the animal carcasses into pieces, and a bucket elevator that transports the animal carcass pieces to a hydraulic pushing device for pushing; The incineration system includes a rotary kiln, a secondary combustion chamber and a burner, wherein the rotary kiln is connected to the secondary combustion chamber, and the burner is used to provide combustible gas for the rotary kiln and the secondary combustion chamber to be incinerated. The rotary kiln includes a horizontal cylindrical barrel, and a reduction motor and a supporting wheel mechanism for driving the barrel to rotate are provided at the lower part of the barrel. A kiln head connected to a hydraulic pushing device is provided at the front end of the barrel, and the kiln head is connected to the barrel through a front sealing device, and the rear end of the barrel is connected to the kiln tail through a rear sealing device. The secondary combustion chamber includes a combustion chamber, and an emergency exhaust chimney is provided at the top of the combustion chamber; The heat exchange system is a shell-and-tube heat exchanger, which is connected to a cold water system for heat exchange to obtain high-temperature steam to provide heat energy for production and life. The cold water system is provided with a water softening device; The quenching spray system includes a quenching tower, an alkali liquid pump and an atomizing spray gun. The alkali liquid pump sprays the prepared alkali liquid stored in the alkali liquid tank to the high-temperature acidic gas in the quenching tower through the atomizing spray gun to perform a neutralization reaction and rapidly cool down the gas. The tail gas generated by the reaction is discharged through an adjustable valve provided at the discharge port of the quenching tower. The residue generated by the reaction is collected through an ash collector provided at the bottom of the quenching tower. The dry deacidification system comprises a dry adsorption tower, a slaked lime injection device and an activated carbon injection device. The tail gas introduced into the dry adsorption tower is deacidified and desulfurized by the slaked lime injection device, and the dioxins and heavy metals in the tail gas are adsorbed by the activated carbon injection device. The dust removal system includes a bag filter, through which solid particles and ash in the exhaust gas are removed. The bag filter is provided with a pulse cleaner for cleaning the filter bags and a constant temperature heating device for maintaining the temperature; The wet deacidification system comprises at least one absorption tower body, wherein a spray head is arranged in the absorption tower body, and the spray head sprays the alkali solution in the alkali solution circulation pool into the absorption tower body through a spray pump for deacidification and desulfurization of tail gas; The air supply system provides sufficient oxygen for the rotary kiln to continue burning, which is used to increase the smoke temperature and the burnout rate. At the same time, the heated secondary air is introduced into the secondary combustion chamber through the air supply system to compensate for the oxygen supply. The induced draft system includes an induced draft fan, which is respectively connected to the outlet of the dry adsorption tower and the bag filter to introduce the tail gas into the absorption tower body; It also includes a control system, which includes a central processing unit module, a sensor module, a communication module and a human-computer interaction module, and the sensor module, the communication module and the human-computer interaction module are all connected to the central processing unit module; It also includes a denitration system connected to the heat exchange system, the denitration system includes an ammonia water storage, an ammonia water solution metering and distributing device and an injector, the ammonia water solution in the ammonia water storage is transported by a liquid supply pump, a dilution water path is provided at the outlet of the liquid supply pump, the ammonia water solution metering and distributing device dilutes the ammonia water solution, and the diluted ammonia water solution is then transported to the injector through a stainless steel heat tracing pipe; It also includes a chimney and a detection device arranged on the chimney, wherein the chimney is used to discharge the exhaust gas to the outside; The animal carcass incineration treatment system is used to implement the following animal carcass incineration treatment method, including the following steps: S1. Turn on the control system and implement system self-check; S2. Turn on the induced draft fan to achieve system induced draft; S3. Turn on the air supply fan to supply air to the system; S4. Turn on the burners of the rotary kiln and the secondary combustion chamber in sequence, maintain the temperature in the rotary kiln between 850-1050°C, and maintain the temperature in the secondary combustion chamber not less than 1100°C; S5. Open the slag remover and discharge the residue produced by the secondary combustion chamber through the conveyor; S6. Start the shell-and-tube heat exchanger, which is connected to the cold water system for heat exchange to obtain high-temperature steam for production and life. The exhaust gas with a temperature of not less than 1100°C is passed into the shell-and-tube heat exchanger for heat exchange, and the output exhaust gas temperature is 500~550°C after heat exchange; S7. Start the atomizing spray gun, slaked lime spray device, activated carbon spray device, bag filter, and spray head installed in the absorption tower of the quench spray system in sequence to deacidify and desulfurize the tail gas, and remove residual dioxins, heavy metals, and dust particles; S8. Open the ammonia solution metering and dispensing device and the injector in the denitration system, and inject ammonia solution into the exhaust gas for reduction reaction to achieve exhaust denitration; S9. Turn on the detection device to analyze the exhaust gas composition. If it meets the environmental protection standard, the exhaust gas is discharged into the atmosphere. Otherwise, it returns to step S7 through the induced draft fan and continues processing until it meets the environmental protection standard.

2. The animal carcass incineration system according to claim 1, characterized in that: A control valve is provided at the bottom of the emergency exhaust chimney, and the control valve is used to automatically open the valve to connect the combustion chamber with the emergency exhaust chimney when the system is powered off.

3. The animal carcass incineration system according to claim 1, characterized in that: A slag remover is provided at the bottom of the combustion chamber for collecting the slag produced in the combustion chamber. A water cooling device is provided inside the slag remover. The water cooling device is used to discharge the slag through a conveying device when the temperature of the slag drops below 80°C.

4. The animal carcass incineration system according to claim 1, characterized in that: The kiln head, cylinder and kiln tail are tilted downward by 1 to 3 degrees along a straight line so as to move the corpse fragments from the kiln head to the kiln tail during the incineration process, and the cylinder speed is 0.2 to 2.0 r / min.

5. The animal carcass incineration system according to claim 1, characterized in that: The secondary combustion chamber also includes an explosion-proof device arranged at the bottom of the combustion chamber, and the explosion-proof device is used to open and release the pressure when the pressure in the combustion chamber exceeds a preset value.

6. The animal carcass incineration system according to claim 1, characterized in that: The bag filter has an input port and an output port, and a bypass smoke pipe is arranged between the input port and the output port.

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