A system and process for deep treatment of dead animal waste gas by humidification method

Abstract

The present invention relates to the field of harmless treatment technology, and discloses a system and process for deep treatment of waste gas from dead animals by humidification method. In this system, a condenser is used for condensing and treating waste gas; a gas storage buffer device is connected to the condenser; a gas storage buffer device is used for buffering waste gas to stabilize the output; an incineration device is connected to the gas storage buffer device; the incineration device is used to burn waste gas; a rapid cooling and deacidification tower device is connected to the incineration device; and the rapid cooling and deacidification tower device is used to cool and deacidify the flue gas generated by incineration before discharging. This process includes the following steps: condensing and treating waste gas to obtain at least condensed water and grease; buffering the waste gas treated by condensation, stably outputting waste gas and incinerating it; cooling and deacidifying the flue gas generated by incineration before discharging it. The technical solution of the present invention adopts the technology of "condensation + gas storage buffer + incineration + rapid cooling and deacidification" combined deodorization, which has the characteristics of high treatment efficiency, strong system stability, and strong impact load resistance, and realizes deep treatment of waste gas from dead animals.

Description

Technical Field

[0001] The invention relates to the technical field of harmless treatment, and in particular to a system and process for deep treatment of waste gas from dead animals by humidification. Background Art

[0002] In the process of animal husbandry development, it is inevitable that dead animals will be produced. The animal carcasses will rot, breed bacteria and produce foul-smelling gases; if not handled in time, it will pollute the environment. Therefore, the harmless treatment of dead animals is an important part of modern animal husbandry.

[0003] Chemical treatment is a better method for treating dead livestock and poultry, and is an important means to achieve harmless treatment and resource utilization of dead livestock and poultry. The chemical treatment method uses high-temperature and high-pressure steaming to cook the pre-treated dead animals. According to the contact properties of the heating medium and the treatment object, it can be divided into two categories: drying method and humidification method. The humidification method uses high-pressure saturated steam to directly contact the dead animal tissue to accelerate the dissolution of fat and protein coagulation. The resource-based products have high added value and significant sterilization effect, but the reaction will produce a large amount of non-condensable waste gas. The main odor pollutants in the waste gas include grease, organic amines (such as cadaverine, putrescine, etc.), hydrogen sulfide, ammonia, methane, carbon dioxide, etc., which are specifically manifested in the complex composition of odor pollutants and more organic pollutants. In actual engineering applications, the combined deodorization process of "spray washing + activated carbon adsorption / UV photolysis" is often used. The treatment effect is general, and it is difficult to ensure that the waste gas is discharged in a long-term and stable manner, which is prone to secondary pollution.

[0004] Therefore, there is an urgent need to develop a technology for deep treatment of waste gas using the humidification method to ensure that the harmless treatment of dead animals is safer and more environmentally friendly. Summary of the invention

[0005] The present invention provides a system and process for deep treatment of waste gas from dead animals by humidification method, so as to solve the above-mentioned technical problem that the treatment effect of waste gas from dead animals in the prior art is mediocre.

[0006] According to a first aspect of the present invention, a system for deep treatment of waste gas from dead animals by humidification method is provided, comprising:

[0007] A condenser, used for condensing and treating the exhaust gas;

[0008] A gas storage buffer device connected to the condenser; the gas storage buffer device is used to buffer the exhaust gas to stabilize the output;

[0009] an incineration device connected to the gas storage buffer device; the incineration device is used to burn the waste gas; and

[0010] A rapid cooling and deacidification tower device is connected to the incineration device; the rapid cooling and deacidification tower device is used to cool the flue gas generated by incineration and discharge it after deacidification.

[0011] Preferably, the air storage buffer device is an air storage bag; the air storage bag comprises:

[0012] outer tank;

[0013] an airbag body, disposed in the outer tank; and

[0014] An elastic element, a first end of which is connected to the airbag body and a second end of which is connected to the outer tank; the elastic element is used to pull the airbag body to fix it;

[0015] Wherein, the airbag body is provided with an air inlet and outlet and / or a sewage outlet, and the air inlet and outlet are used for air intake and / or air exhaust.

[0016] Preferably, the quenching and deacidification tower device is provided as a complete set of devices; the quenching and deacidification tower device comprises:

[0017] A deacidification tower, used to cool and deacidify the flue gas; and

[0018] The alkali solution preparation unit is used to transport the alkali solution to the deacidification tower for deacidifying the flue gas.

[0019] Preferably, the deacidification tower comprises:

[0020] shell;

[0021] a chimney disposed at a first end of the housing;

[0022] an atomizer connected to the housing; a first end of the atomizer extends into the housing, and a second end of the atomizer is connected to the alkali solution preparation unit; and

[0023] A baffle is arranged in the shell; the baffle is used to improve the mixing degree of the alkali solution and the smoke.

[0024] Preferably, the system for deep treatment of dead animal waste gas by humidification method further comprises:

[0025] An oil separator is connected to the condenser; the oil separator is used for oil-water separation of condensed water and grease generated by condensed exhaust gas.

[0026] Preferably, the system for deep treatment of dead animal waste gas by humidification method further comprises:

[0027] The heat exchange device is arranged between the incineration device and the rapid cooling and deacidification tower device; the heat exchange device is used to cool down the flue gas generated by the incineration device.

[0028] Preferably, the heat exchange device is configured as a shell and tube heat exchanger; the shell and tube heat exchanger comprises a tube side and a shell side, the tube side is configured as a flue, and the shell side is used for introducing a refrigerant medium, wherein the tube side is configured as a high-temperature flue gas discharge duct.

[0029] According to a second aspect of the present invention, a process for deep treatment of waste gas from dead animals by humidification is provided, comprising the following steps:

[0030] S1. condensing the exhaust gas to obtain at least condensed water and grease;

[0031] S2. Buffering the waste gas after condensation treatment, stably outputting the waste gas and incinerating it;

[0032] S3. Cool down and deacidify the flue gas produced by incineration before discharging it.

[0033] Preferably, the process for deep treatment of dead animal waste gas by humidification method further comprises the following steps:

[0034] S4. Separating the condensed water and grease produced by condensing the exhaust gas; and / or

[0035] S5. Atomize the alkali solution and mix it with the flue gas to cool the flue gas and deacidify it.

[0036] Preferably, the cooling of the flue gas generated by incineration is provided with at least two cooling processes; in the first cooling process, a heat exchange device is used to cool the flue gas generated by incineration once, and in the second cooling process, alkaline solution is sprayed to deacidify the flue gas and realize secondary cooling of the flue gas at the same time.

[0037] The technical solution of the present invention adopts the combined deodorization technology of "condensation + gas storage buffer + incineration + rapid cooling and deacidification", which has the characteristics of low treatment cost, good broad spectrum of various pollutants, high treatment efficiency, strong system stability and strong resistance to shock loads. It can achieve deep treatment of waste gas from dead animals and ensure that the harmless treatment of dead animals is more efficient, thorough, safe and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The present invention is a schematic diagram of a system and process for deep treatment of waste gas from dead animals by humidification in an embodiment;

[0039] Figure 2 This is a process flow chart of a system and process for deep treatment of waste gas from dead animals by humidification method in an embodiment;

[0040] Figure 3 is a schematic diagram of the structure of an air storage bag in an embodiment;

[0041] Figure 4 The figure is a side view schematic diagram of an air storage bag in an embodiment.

[0042] Reference numerals:

[0043] 1- condenser; 2- oil separator; 3- oil storage tank; 4- air storage bag; 5- shell and tube heat exchanger; 6- rapid cooling and deacidification tower device; 7- incineration device; 8- booster fan; 9- combustion-supporting fan;

[0044] 41-outer tank; 42-inlet and outlet; 43-airbag body; 44-drain outlet; 45-liquid level transmitter; 46-elastic element;

[0045] 61-deacidification tower; 62-alkali solution preparation unit;

[0046] 611- chimney; 612- baffle; 613- atomizer; 614- housing;

[0047] 621-alkali solution delivery pump; 622-alkali solution preparation tank. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0050] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element. Moreover, in the present invention, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element through a third element.

[0052] Embodiment 1

[0053] Please refer to Figure 1-Figure 4 This embodiment provides a system for deep treatment of waste gas from dead animals by wet treatment, including a condenser 1, a gas storage buffer device, an incineration device 7 and a quenching and deacidification tower device 6 connected in sequence. The condenser 1 is used to condense and treat the waste gas (the waste gas is produced by the wet treatment of dead animals), and obtain condensed water and grease through the oil separator 2. The condensed water is sent to the sewage treatment system for further treatment, and the grease is transported to the oil storage tank 3 for storage and can be sold as a product; the gas storage buffer device is connected to the condenser 1 and is used to receive the waste gas that has been condensed and treated, and buffer the waste gas for stable output; the incineration device 7 is connected to the gas storage buffer device and is used to burn the waste gas, so that the substances with calorific value in the waste gas can be burned; the quenching and deacidification tower device 6 is connected to the incineration device 7 and is used to cool the flue gas generated by incineration and discharge it after deacidification.

[0054] The exhaust gas emission generated by the wet treatment of dead animals is intermittent, the exhaust gas treatment volume varies greatly, and there are instantaneous impact loads, etc., and a buffer device is added to store exhaust gas, balance exhaust gas concentration, and adjust and stabilize pressure. In one embodiment, the air storage buffer device is set as an air storage bag 4, and the air storage bag 4 can be set as a horizontal structure; the air storage bag 4 preferably includes: an outer tank 41, an air bag body 43 arranged in the outer tank 41, and an elastic element 46. Among them, the outer tank 41 is generally set as an external steel tank, and the steel tank can effectively prevent external forces from damaging the internal air bag body 43, protect the air bag body 43, and is more resistant to ultraviolet rays, wind loads, and snow loads. The air bag 4 has a long service life and is safe and reliable. A liquid level transmitter 45 is set on the top of the tank. The first end of the elastic element 46 is connected to the airbag body 43, and the second end is connected to the outer tank 41; the elastic element 46 is used to pull the airbag body 43 to fix it in the outer tank 41; the elastic element 46 is preferably set as an elastic rope, which is used to pull the airbag body 43 to facilitate the adjustment of the volume change of the airbag body 43. The airbag body 43 is provided with an air inlet and outlet 42 and / or a sewage outlet 44, the air inlet and outlet 42 is used for air intake and / or air outlet, and the sewage outlet 44 is used for sewage discharge. Among them, through the variable frequency adjustment of the booster fan 8, the exhaust gas can be continuously and stably sent to the incineration device 7 for combustion. The exhaust gas contains certain methane, organic amines and other substances, and has a certain calorific value, but due to the different types of dead animals, the calorific value of the exhaust gas generated by the humidification method is different. Therefore, the incineration device 7 adopts a regenerative incinerator and is provided with auxiliary fuel (the fuel source is consistent with the steam boiler fuel using the humidification method, such as natural gas, biogas, LNG, etc.) for combustion support, and a combustion-supporting fan 9 can be configured to ensure that the fuel gas and the waste gas are fully mixed, and complete combustion is achieved under the conditions of 600-1000°C and residence time>0.5s, and the final products are SO2, HCl, CO2 and water vapor, etc. Further, the heat of the incineration waste gas can be recycled.

[0055] In one embodiment, the quenching and deacidification tower device 6 is configured as a complete set of devices, integrating cooling and deacidification; the quenching and deacidification tower device 6 includes: a deacidification tower 61 and an alkali solution preparation unit 62. Among them, the deacidification tower 61 is used to cool and deacidify the flue gas to achieve standard flue gas emission, and belongs to a quenching and deacidification integrated tower; the alkali solution preparation unit 62 is used to transport alkali solution to the deacidification tower 61 for deacidification of the flue gas. Further, the deacidification tower 61 includes: an outer shell 614; a chimney 611 is arranged at the first end of the outer shell 614; an atomizer 613 is connected to the outer shell 614, the first end of the atomizer 613 extends into the outer shell 614, and the second end is connected to the alkali solution preparation unit 62; a baffle 612 is arranged in the outer shell 614, and the baffle 612 is used to improve the mixing degree of alkali solution and flue gas. The atomizer 613 is preferably provided with two layers, and the baffle 612 can be provided with two layers, so as to increase the turbulence of the flue gas, improve the mixing degree of the alkali solution and the flue gas, effectively remove the acid pollutants in the exhaust gas, and reduce the consumption of the reagent (alkali) and the operating cost. Among them, the alkali solution preparation unit 62 includes an alkali solution preparation tank 622, an alkali solution delivery pump 621, and pipes and valves connecting various equipments, and corresponding cleaning measures can also be provided. The spraying facility of the alkali solution can be provided as an alkali solution spray gun or a rotary atomizer (a type of atomizer 613).

[0056] In one embodiment, the system for deep treatment of dead animal waste gas by humidification method further includes: the oil separator 2 connected to the condenser 1; the oil separator 2 is used to separate the condensed water and grease generated by the condensed waste gas. The grease in the waste gas is recovered and transported to the oil storage tank 3 by the oil pump, and sold regularly to obtain resource benefits.

[0057] In one embodiment, the system for deep treatment of dead animal wet waste gas also includes: a heat exchange device; the heat exchange device is arranged between the incineration device 7 and the quenching deacidification tower device 6; the heat exchange device is used to cool the flue gas generated by the incineration device 7. The heat exchange device is preferably set as a shell and tube heat exchanger 5. Specifically, the shell and tube heat exchanger 5 includes a tube side and a shell side, the tube side is set as a flue, and the shell side is used to pass a refrigerant medium, wherein the tube side is set as a high-temperature flue gas discharge pipeline (i.e., a flue). Regarding the shell and tube heat exchanger 5, the shell side can be directly installed on the high-temperature flue gas discharge pipeline to transform it into a shell and tube heat exchanger 5; wherein the tube side is a flue, and the shell side is a steam boiler softened water supporting the wet process, and the steam boiler softened water is used as the refrigerant medium to cool and exchange heat with the heat medium-incineration flue gas (about 600-1000°C), so as to realize energy recovery and utilization and reduce the cost of dead animal treatment.

[0058] The system for deep treatment of dead animal waste gas by humidification of the present invention adopts the combined deodorization technology of "condensation + gas storage buffer + incineration + rapid cooling and deacidification", which has the characteristics of low treatment cost, good broad spectrum of various pollutants, high treatment efficiency and strong system stability, ensuring that the harmless treatment of dead animals is more efficient, thorough, safe and environmentally friendly. Among them, it has the following advantages in terms of heat recovery and treatment:

[0059] (1) No need to purchase heat exchangers, directly use the flue gas exhaust pipe as the pipe process, add shell and tube to make it a heat exchange device, saving investment;

[0060] (2) Recovering heat between 350-600℃ and 1000℃ can significantly increase the inlet water temperature of the steam boiler (i.e., the steam boiler supporting the wet treatment of dead animals), thereby significantly reducing the fuel consumption of the steam boiler, saving energy and protecting the environment;

[0061] (3) After the high-temperature flue gas passes through the heat exchange device, the temperature drops to below 350°C and enters the quenching and deacidification tower device 6 for further treatment, wherein the consumption of spray water in the quenching and deacidification integrated tower is also significantly reduced;

[0062] (4) Due to the low flue gas temperature, the serious corrosion problem of the rapid cooling and deacidification integrated tower in a high temperature environment can be alleviated. At the same time, the atomizer 613 in the tower is not prone to scaling due to local overheating, which can reduce the frequency of maintenance of the atomizer 613.

[0063] Embodiment 2

[0064] Please refer to Figure 1 , Figure 2 This embodiment provides a process for deep treatment of dead animal waste gas by humidification method, comprising the following steps:

[0065] S1. condensing the exhaust gas to obtain at least condensed water and grease;

[0066] S2. Buffering the waste gas after condensation treatment, stably outputting the waste gas and incinerating it;

[0067] S3. Cool down and deacidify the flue gas produced by incineration before discharging it.

[0068] Among them, the condensation treatment of step S1 can be performed in the condenser 1. Since the exhaust gas emission generated by the wet treatment of dead animals is intermittent, the exhaust gas treatment volume varies greatly, and there are instantaneous impact loads, etc., a buffer process is added to store exhaust gas, balance exhaust gas concentration, and adjust and stabilize pressure. Among them, an air storage bag 4 is used as an air storage buffer device. The air storage bag 4 has an external steel tank and an air bag body 43. The air bag body 43 is pulled by an elastic rope to facilitate the adjustment of the volume change of the air bag body 43; the external steel tank can effectively prevent external forces from damaging the air bag body 43 and protect the air bag body 43. The exhaust gas contains certain methane, organic amines and other substances, and has a certain calorific value. Through the frequency conversion adjustment of the booster fan 8, the air storage bag 4 can continuously and stably send the exhaust gas to the incineration device 7 for combustion; the heat of the incineration exhaust gas can also be recycled. The flue gas generated by the combustion is sprayed to cool down, and the alkaline solution is neutralized to achieve deacidification, so as to achieve standard emission of the flue gas.

[0069] In one embodiment, the process for deep treatment of dead animal waste gas by humidification method further comprises the following steps:

[0070] S4. Separate the condensed water and grease generated by condensing the waste gas. The oil-water separation step is performed in the oil separator 2, which can separate the condensed water and grease generated by condensing the waste gas. The grease in the waste gas is recovered and sent to the oil storage tank 3, which is regularly sold to obtain resource benefits.

[0071] In one embodiment, the process for deep treatment of dead animal waste gas by humidification method further comprises the following steps:

[0072] S5. Atomize the alkali solution and fully mix it with the flue gas to cool the flue gas and remove acid. The prepared alkali solution is transported into the deacidification tower 61 and sprayed after being atomized by the atomizer 613. The flue gas turbulence is fully mixed with the alkali solution to effectively remove acidic pollutants.

[0073] In one embodiment, the cooling of the flue gas generated by incineration is provided with at least two cooling processes; in the first cooling process, a heat exchange device is used to cool the flue gas generated by incineration once, and the high-temperature flue gas (about 600-1000°C) generated by the incineration device 7 can be cooled to below 350°C; in the first cooling process, energy recovery can also be achieved at the same time, the high-temperature flue gas is passed into the tube side (i.e., the flue) of the shell and tube heat exchanger, and the softened water of the steam boiler supporting the wet process is passed into the shell side, and the flue gas is cooled by the softened water of the steam boiler to recover heat, and the boiler inlet water temperature is increased, which not only reduces the fuel consumption of the steam boiler, but also reduces the consumption of spray water of the quenching deacidification tower device 6, so that the comprehensive treatment cost of dead animals is reduced; in the second cooling process, alkali solution is sprayed to deacidify the flue gas while achieving secondary cooling of the flue gas, and the flue gas is discharged after meeting the standards.

[0074] Embodiment 3

[0075] Please refer to Figure 1-Figure 4 This embodiment describes a technical solution in combination with a system and process for deep treatment of waste gas from dead animals by humidification. The technical solution describes the process while also introducing the equipment / devices involved in the process.

[0076] Dead animals are sterilized at high temperature and high pressure using the humidification method (reaction temperature ≥ 135°C, reaction pressure ≥ 0.3MPa, reaction time ≥ 30min). The waste gas generated is first discharged into the condenser 1, so that the water vapor and grease in the waste gas are condensed and enter the oil separator 2 for oil-water separation; the grease in the waste gas is recovered and sent to the oil storage tank 3, and sold regularly to obtain resource benefits.

[0077] The waste gas after condensation treatment enters the air storage bag 4 for temporary storage, and is continuously and stably sent to the incineration device 7 through the frequency conversion adjustment of the booster fan 8. The air storage bag 4 is a gas storage buffer device, which is generally a horizontal structure, and is provided with an external steel tank and an air bag body 43. The air bag body 43 is pulled by an elastic rope to facilitate the adjustment of the volume change of the air bag body 43. In detail, in the technical solution of the present invention, an air storage bag 4 is added, and the subsequent waste gas treatment device / equipment can be designed and selected according to the average time waste gas generation (otherwise it needs to be designed according to the maximum time generation), thereby significantly reducing its equipment investment, processing cost and operation management difficulty, and significantly improving the processing capacity, degree of automation, stability and reliability of meeting emission standards. In the structure of the airbag 4, the external steel tank can effectively prevent external force from damaging the airbag body 43, protect the airbag body 43, and is more resistant to ultraviolet rays, wind loads, and snow loads. The airbag 4 has a long service life and is safe and reliable. The airbag body 43 is fixed to the inner wall of the steel tank by an elastic rope, which can prevent the airbag body 43 from frequent displacement (expansion and contraction) when the exhaust gas storage amount changes greatly, especially when the exhaust gas storage amount is low, which can effectively prevent the top surface of the airbag body 43 from collapsing to the bottom, thereby increasing its service life.

[0078] The waste gas contains certain methane, organic amines and other substances with certain calorific value, but due to the different types of dead animals, the calorific value of the waste gas produced by the humidification method is different. Therefore, the combustion method can be used to treat the waste gas, and at the same time, heat can be obtained for recycling. The incineration device 7 generally adopts a regenerative incinerator and is provided with auxiliary fuel (the fuel source is consistent with the steam boiler fuel supporting the humidification method, such as natural gas, biogas, LNG, etc.) for combustion support to ensure that the fuel gas is fully mixed with the odorous gas, and complete combustion is achieved under the conditions of 600-1000°C and residence time>0.5s. The final products are SO2, HCl, CO2 and water vapor.

[0079] The high-temperature flue gas (about 600-1000°C) generated by the incineration device 7 is cooled to below 350°C by the heat exchange device and enters the rear-end rapid cooling and deacidification tower device 6. Among them, the heat exchange device can be set as a shell and tube heat exchanger 5, the tube side is the flue, and the shell side is the steam boiler softened water supporting the wet process. The flue gas is cooled by the steam boiler softened water to recover the heat, and the boiler inlet water temperature is increased, which not only reduces the fuel consumption of the steam boiler, but also reduces the consumption of the spray water of the rapid cooling and deacidification tower device 6, so that the comprehensive treatment cost of dead animals is reduced. Specifically, a shell and tube is installed on the high-temperature flue gas discharge pipeline to form a shell and tube heat exchanger 5 (the tube side is the flue, and the shell side is the steam boiler softened water supporting the wet process), and the steam boiler softened water is used as the refrigerant medium to cool and heat the heat medium-incineration flue gas (about 600-1000°C), so as to achieve energy recovery and utilization and reduce the cost of dead animal treatment.

[0080] The rapid cooling deacidification tower device 6 uses a heat exchange device to spray cool and deacidify the flue gas after heat exchange and cooling through the prepared alkali solution. The concentration of the alkali solution is controlled at 0.5% to 3%, and the alkali solution can be prepared by caustic soda flakes and lime, preferably caustic soda flakes. The alkali solution is atomized by the atomizer 613 (spray gun or rotary atomizer) of the rapid cooling deacidification tower device 6 and mixed with the hot flue gas in the tower for heat and mass transfer exchange (cooling the flue gas to about 150°C), and a chemical reaction occurs to absorb the acidic gas in the exhaust gas and then meet the standards and discharge it through the chimney 611. Among them, the rapid cooling deacidification tower device 6 mainly plays the role of cooling, deacidifying and exchanging heat energy of high-temperature flue gas in the exhaust gas treatment system. In one embodiment, the rapid cooling deacidification tower device 6 is a complete set of equipment, including a deacidification tower 61 and an alkali solution preparation unit 62. The deacidification tower 61 includes: a shell 614; a chimney 611 is arranged at the first end of the shell 614; an atomizer 613 is connected to the shell 614, the first end of the atomizer 613 extends into the shell 614, and the second end is connected to the alkali solution preparation unit 62; a baffle 612 is arranged in the shell 614, and the baffle 612 is used to improve the mixing degree of the alkali solution and the flue gas. The baffle 612 increases the turbulence of the flue gas, improves the mixing degree of the alkali solution and the flue gas, effectively removes the acidic pollutants in the waste gas, and reduces the consumption of the reagent (alkali) and the operating cost. The alkali solution preparation unit 62 includes an alkali solution preparation tank 622, an alkali solution spray pump / alkali solution delivery pump 621, and pipes and valves connecting various equipment, and corresponding cleaning measures can be set.

[0081] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A system for deep treatment of dead animal waste gas by humidification method, characterized in that: include: A condenser, used for condensing and treating the exhaust gas; A gas storage buffer device connected to the condenser; the gas storage buffer device is used to buffer the exhaust gas to stabilize the output; an incineration device connected to the gas storage buffer device; the incineration device is used to burn the waste gas; and A rapid cooling and deacidification tower device is connected to the incineration device; the rapid cooling and deacidification tower device is used to cool the flue gas generated by incineration and discharge it after deacidification.

2. The system for deep treatment of dead animal waste gas by humidification method according to claim 1 is characterized in that: The air storage buffer device is configured as an air storage bag; the air storage bag comprises: outer tank; an airbag body, disposed in the outer tank; and An elastic element, a first end of which is connected to the airbag body and a second end of which is connected to the outer tank; the elastic element is used to pull the airbag body to fix it; Wherein, the airbag body is provided with an air inlet and outlet and / or a sewage outlet, and the air inlet and outlet are used for air intake and / or air exhaust.

3. The system for deep treatment of dead animal waste gas by humidification method according to claim 1 is characterized in that: The quenching and deacidification tower device is provided as a complete set of devices; the quenching and deacidification tower device comprises: A deacidification tower, used to cool and deacidify the flue gas; and The alkali solution preparation unit is used to transport the alkali solution to the deacidification tower for deacidifying the flue gas.

4. The system for deep treatment of dead animal waste gas by humidification method according to claim 3 is characterized in that: The deacidification tower comprises: shell; a chimney disposed at a first end of the housing; an atomizer connected to the housing; a first end of the atomizer extends into the housing, and a second end of the atomizer is connected to the alkali solution preparation unit; and A baffle is arranged in the shell; the baffle is used to improve the mixing degree of the alkali solution and the smoke.

5. The system for deep treatment of dead animal waste gas by humidification method according to any one of claims 1 to 4, characterized in that: The system for deep treatment of dead animal waste gas by humidification method also includes: An oil separator is connected to the condenser; the oil separator is used for oil-water separation of condensed water and grease generated by condensed exhaust gas.

6. The system for deep treatment of dead animal waste gas by humidification method according to any one of claims 1 to 4, characterized in that: The system for deep treatment of dead animal waste gas by humidification method also includes: The heat exchange device is arranged between the incineration device and the rapid cooling and deacidification tower device; the heat exchange device is used to cool down the flue gas generated by the incineration device.

7. The system for deep treatment of dead animal waste gas by humidification method according to claim 6, characterized in that: The heat exchange device is configured as a shell and tube heat exchanger; the shell and tube heat exchanger comprises a tube side and a shell side, the tube side is configured as a flue, and the shell side is used for introducing a refrigerant medium, wherein the tube side is configured as a high-temperature flue gas discharge pipeline.

8. A process for deep treatment of waste gas from dead animals by humidification, characterized in that: The following steps are involved: S1. condensing the exhaust gas to obtain at least condensed water and grease; S2. Buffering the waste gas after condensation treatment, stably outputting the waste gas and incinerating it; S3. Cool down and deacidify the flue gas produced by incineration before discharging it.

9. The process for deep treatment of waste gas from dead animals by humidification method according to claim 8, characterized in that: The process for deep treatment of dead animal waste gas by humidification method also includes the following steps: S4. Separating the condensed water and grease produced by condensing the exhaust gas; and / or S5. Atomize the alkali solution and mix it with the flue gas to cool the flue gas and deacidify it.

10. The process for deep treatment of waste gas from dead animals by humidification method according to claim 8 or 9, characterized in that: The cooling of the flue gas generated by incineration is provided with at least two cooling processes; in the first cooling process, a heat exchange device is used to cool the flue gas generated by incineration once, and in the second cooling process, alkaline solution is sprayed to deacidify the flue gas while achieving secondary cooling of the flue gas.

Images