Sludge and flue gas treatment integrated coordination device

Abstract

The utility model belongs to the technical field of solid waste treatment, and particularly relates to an integrated coordination device for sludge and flue gas treatment. According to the sludge and flue gas treatment integrated coordination device, novel rapid fluidized combustion is adopted, the thermal load in the device is high, the number of hot materials stored in the furnace is large, the concentration is high, the heat storage amount is large, and the adaptability to fuel is very high. The two-section combustion chamber is arranged, CO, hydrocarbon compounds, volatile matter, tar, odor and other gases generated in the dry sludge pyrolysis process can be further subjected to high-temperature combustion and sterilization, heat is obtained, generation of harmful gases is reduced, and the waste gas treatment difficulty is reduced. The second-section combustion chamber is provided with a feeding port so as to supplement energy when needed, maintain the combustion temperature and ensure sufficient combustion of waste gas. And the stokehole hopper can be used for temporarily storing the sludge carbonized material or providing the sludge carbonized material and other fuels from the outside of the system, so that the thermal working state of the sludge and flue gas treatment integrated coordination device is conveniently maintained, and the usability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste treatment, and specifically relates to an integrated coordination device for sludge and flue gas treatment. Background Art

[0002] The applicant's Chinese patents CN201911128768.6 and CN202010849389.2 have made improvements to the above problems, but there are still at least the following problems:

[0003] 1. In the carbide combustion part, the sludge carbide in the pyrolysis furnace and the organic waste gas generated by the pyrolysis dry sludge are directly mixed and burned. The organic waste gas cannot be fully burned, generating gaseous pollutants.

[0004] 2. In the carbide preparation part, the inner cylinder of the carbide preparation equipment is not heated, and the pyrolysis carbonization efficiency is not high.

[0005] 3. In the brick drying room, only the waste heat of the exhaust gas after drying the wet sludge is recovered, and the exhaust gas is not purified. Utility Model Content

[0006] In view of the existing phenomenon, the technical problem to be solved by the utility model is to provide an integrated coordination device for sludge and flue gas treatment, which at least solves one of the above-mentioned technical problems.

[0007] An integrated coordination device for sludge and flue gas treatment, comprising: a sludge carbonization material incineration chamber, a pyrolysis chamber, a two-stage combustion chamber, a dryer, and a flue gas purification device;

[0008] The sludge carbonized material incineration chamber is used for cracking and burning the sludge carbonized material to produce ash and high-temperature flue gas, and includes: an incineration chamber body, a furnace front feeding pipe, an incineration slag discharge pipe, a high-pressure blower, a furnace front hopper and an incineration flue gas outlet; the sludge carbonized material enters the incineration chamber body through the furnace front feeding pipe for cracking and combustion to produce ash and high-temperature flue gas, the ash is discharged from the incineration slag discharge pipe, and the high-temperature flue gas is discharged from the incineration flue gas outlet, and the oxygen required for the cracking and combustion of the sludge carbonized material is fed in through the high-pressure blower;

[0009] The pyrolysis chamber is used to pyrolyze dry sludge to produce the sludge carbonized material, combustible waste gas, and high-temperature flue gas;

[0010] The second stage combustion chamber is used to burn the combustible waste gas to produce ash and high-temperature flue gas, including a second stage combustion chamber body, a feed port, a waste gas inlet, a second stage combustion chamber flue gas outlet, a second stage combustion chamber slag outlet, and an SCR denitration device. The combustible waste gas enters the second stage combustion chamber body through the waste gas inlet and burns to produce high-temperature flue gas and ash. The high-temperature flue gas is discharged to the dryer through the second stage combustion chamber flue gas outlet, and the ash is discharged through the second stage combustion chamber slag outlet. The feed port is used to supplement fuel to maintain high temperature, and the SCR denitration device is used for high-temperature denitration;

[0011] The dryer uses the high-temperature flue gas generated by the sludge carbonization material incineration chamber, the pyrolysis chamber, and the second-stage combustion chamber to dry the wet sludge to produce dry sludge and low-temperature flue gas. The dry sludge is transported to the pyrolysis chamber, and the low-temperature flue gas is transported to the flue gas purification device.

[0012] The flue gas purification device is used to purify the low-temperature flue gas to meet the emission standards.

[0013] Furthermore, the pyrolysis chamber is arranged inside the sludge carbonization material incineration chamber.

[0014] Furthermore, the sludge carbonization material incineration chamber and the second-stage combustion chamber are integrally arranged.

[0015] Furthermore, the high-temperature flue gas generated by the pyrolysis chamber and the second-stage combustion chamber enters the dryer.

[0016] Furthermore, part of the high-temperature flue gas generated in the sludge carbonization material incineration chamber enters the pyrolysis chamber, and the other part enters the second-stage combustion chamber.

[0017] Furthermore, the temperature in the second-stage combustion chamber is maintained above 800°C.

[0018] Furthermore, the pyrolysis chamber includes: a pyrolysis chamber body, a dry sludge inlet, a carbonized material outlet, an inner layer of the pyrolysis chamber, a middle layer of the pyrolysis chamber, an outer layer of the pyrolysis chamber, a pyrolysis flue gas outlet, a high-temperature flue gas inlet of the pyrolysis chamber, and an exhaust gas outlet; the dry sludge enters the middle layer of the pyrolysis chamber through the dry sludge inlet, and guide plates are provided on the cylinder walls of the inner layer of the pyrolysis chamber, the middle layer of the pyrolysis chamber, and the outer layer of the pyrolysis chamber that are in contact with the dry sludge. The middle layer of the pyrolysis chamber mechanically rotates the dry sludge at a low speed and absorbs heat through the cylinder wall. The dry sludge continuously moves along the middle layer of the pyrolysis chamber and the outer layer of the pyrolysis chamber and is continuously pyrolyzed and carbonized, and is finally discharged from the carbonized material outlet, and is mechanically transmitted to the front feeding pipe of the furnace to enter the sludge carbonized material incineration chamber for incineration; the inner layer of the pyrolysis chamber is a circular smoke pipe, which enters from the high-temperature flue gas inlet of the pyrolysis chamber, and enters the dryer from the pyrolysis flue gas outlet after releasing heat.

[0019] Furthermore, the dryer includes: a dryer body, a wet sludge inlet, a drying smoke inlet, a dry sludge outlet, and a drying smoke outlet; wet sludge is fed into the dryer body from the wet sludge inlet, and high-temperature smoke enters the dryer body from the drying smoke inlet to release heat, and direct heat and mass exchange between gas and solid occurs. The dry sludge is discharged from the dry sludge outlet, and the low-temperature smoke is discharged from the drying smoke outlet.

[0020] Furthermore, the inner wall of the dryer body is provided with a crushing device to break up the wet sludge, and the cooled flue gas is discharged from the drying flue gas outlet and enters the flue gas purification device, and the dry sludge is discharged from the dry sludge outlet and enters the pyrolysis chamber.

[0021] Furthermore, the flue gas purification device includes: a cyclone dust collector, a first-level high-voltage electrostatic precipitator, jet activated carbon, a second-level high-voltage electrostatic precipitator, and a desulfurization tower.

[0022] The beneficial effects of this application are:

[0023] 1. The integrated coordination device for sludge and flue gas treatment of the present application adopts a new type of rapid fluidized combustion. The heat load in the device is high, and the hot materials stored in the furnace are large, the concentration is high, and the heat storage capacity is large. Therefore, it has strong adaptability to fuels and can use gas, solid, liquid, and high, medium and low calorific value fuels to meet the needs under different conditions. The present application is provided with a two-stage combustion chamber, which can further burn and sterilize the CO, hydrocarbon compounds, volatiles, tar, odor and other gases generated in the process of pyrolysis of dry sludge, obtain heat, and reduce the generation of harmful gases, thereby reducing the difficulty of waste gas treatment. The two-stage combustion chamber is provided with a feeding port to supplement energy when needed, maintain the combustion temperature, and ensure that the waste gas is fully burned. The hopper in front of the furnace can be used for caching sludge carbonized materials or providing sludge carbonized materials and other fuels from outside the system, so as to maintain the thermal working state of the integrated coordination device for sludge and flue gas treatment and improve ease of use.

[0024] 2. The pyrolysis chamber of the present application directly exchanges heat with the internal gas of the sludge carbonization material incineration chamber. The radiation temperature and pressure of the equipment are large and the heating speed is fast. The low-temperature heat exchange effect is significant, so the heat exchange efficiency is particularly high, and the sensible heat is recovered to the maximum extent. The thermal efficiency is high and the energy-saving effect is significant. Reducing fuel consumption means reducing greenhouse gas emissions.

[0025] 3. The present application provides an integrated arrangement of the second-stage combustion chamber and the sludge carbonization material incineration chamber, which allows the high-temperature flue gas generated in the sludge carbonization material incineration chamber to fully heat the second-stage combustion chamber, thereby facilitating the second-stage combustion chamber to maintain a relatively high combustion temperature. The second-stage combustion chamber and the sludge carbonization material incineration chamber can be separated by a partition, and there is no need to separately set up the second-stage combustion chamber equipment, thereby improving the degree of equipment integration and reducing costs.

[0026] 4. This application can fully utilize high-temperature flue gas step by step and reasonably recover the waste heat of high-temperature flue gas, such as using high-temperature flue gas to maintain the exhaust gas combustion temperature, maintain the pyrolysis temperature, and dry wet sludge.

[0027] 5. The two-stage combustion chamber set in this application maintains a temperature above 800°C. At this temperature, the waste gas generated by the pyrolysis of dry sludge into sludge carbonized material is burned more fully. The ash produced after combustion has good activity and can be directly conveyed to the ash storage together with the ash produced in the sludge carbonized material incineration chamber by a conveyor for storage, and further used to mix cement and be used as building materials. This application uses high-grade heat sources for waste gas treatment, which is economical and environmentally friendly.

[0028] 6. The pyrolysis chamber of the present application has a compact structure and can be conveniently integrated with the sludge carbonization material incineration chamber and the second-stage combustion chamber. The multi-layer cylindrical structure therein can guide the dry sludge and fully contact the hot surface. The dry sludge pyrolysis stroke is long and the dry sludge is fully pyrolyzed. The inner space of the inner layer of the pyrolysis chamber can directly form a high-temperature flue gas flow channel, which is convenient for recycling high-temperature flue gas from other equipment for pyrolysis of dry sludge, and further sending the high-temperature flue gas after heat exchange to downstream equipment to continue to use waste heat. The provision of an exhaust gas outlet can facilitate the collection of exhaust gas generated by pyrolysis of dry sludge, and facilitate high-temperature combustion treatment of the exhaust gas.

[0029] 7. The dryer of the present application has direct gas-solid heat and mass exchange, and a crushing device is arranged on the inner wall of the dryer body to improve the drying efficiency of wet sludge, reduce the gas volume and gas temperature requirements required for drying wet sludge, and cooperate with the high-temperature flue gas generated by the pyrolysis chamber and the second-stage combustion chamber to greatly reduce the external hot gas demand, reduce the residual temperature of the gas used for drying, and reduce the difficulty of purification, which is beneficial to improve the economy and coordination of the integrated coordination device for sludge and flue gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the utility model and are used together with the description to explain the principles of the utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the utility model, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of an embodiment of a sludge carbonization material incineration chamber of the utility model;

[0033] Figure 3 It is a schematic diagram of an embodiment of a pyrolysis chamber of the utility model;

[0034] Figure 4 It is a schematic diagram of an embodiment of a two-stage combustion chamber of the utility model;

[0035] Figure 5 It is a schematic diagram of an embodiment of the drying machine of the utility model;

[0036] Figure 6 It is a schematic diagram of an embodiment of the flue gas purification device of the present utility model. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Please refer to Figure 1-6 , some embodiments of the present application provide an integrated coordination device for sludge and flue gas treatment, including: a sludge carbonization material incineration chamber 1, a pyrolysis chamber 2, a second-stage combustion chamber 3, a dryer 4, and a flue gas purification device 5;

[0039] The sludge carbonized material incineration chamber 1 is used for cracking and burning the sludge carbonized material to produce ash and high-temperature flue gas, including: an incineration chamber body 1-1, a furnace front feeding pipe 1-2, an incineration slag discharge pipe 1-3, a high-pressure blower 1-4, a furnace front hopper 1-5 and an incineration flue gas outlet 1-6; the sludge carbonized material enters the incineration chamber body 1-1 through the furnace front feeding pipe 1-2 for cracking and combustion to produce ash and high-temperature flue gas, the ash is discharged from the incineration slag discharge pipe 1-3, and the high-temperature flue gas is discharged from the incineration flue gas outlet 1-6, and the oxygen required for the cracking and combustion of the sludge carbonized material is fed in through the high-pressure blower 1-4;

[0040] The pyrolysis chamber 2 is used to pyrolyze dry sludge to produce sludge carbonized material, combustible waste gas, and high-temperature flue gas;

[0041] The second stage combustion chamber 3 is used to burn combustible waste gas to produce ash and high-temperature flue gas, including a second stage combustion chamber body 3-1, a feed port 3-2, a waste gas inlet 3-3, a second stage combustion chamber flue gas outlet 3-4, a second stage combustion chamber slag outlet 3-5, and an SCR denitrification device 3-6. The combustible waste gas enters the second stage combustion chamber body 3-1 through the waste gas inlet 3-3 and burns to produce high-temperature flue gas and ash. The high-temperature flue gas is discharged to the dryer 4 through the second stage combustion chamber flue gas outlet 3-4, and the ash is discharged through the second stage combustion chamber slag outlet 3-5. The feed port 3-2 is used to supplement fuel to maintain high temperature, and the SCR denitrification device 3-6 is used for high-temperature denitrification;

[0042] The dryer 4 uses the high-temperature flue gas generated by the sludge carbonization material incineration chamber 1, the pyrolysis chamber 2, and the second-stage combustion chamber 3 to dry the wet sludge to produce dry sludge and low-temperature flue gas. The dry sludge is transported to the pyrolysis chamber 2, and the low-temperature flue gas is transported to the flue gas purification device 5.

[0043] The flue gas purification device 5 is used to purify the low-temperature flue gas to meet the emission standards.

[0044] The integrated coordination device for sludge and flue gas treatment of the present application adopts a new type of rapid fluidized combustion. The heat load in the device is high, and the hot materials stored in the furnace are large, the concentration is high, and the heat storage capacity is large. Therefore, it has strong adaptability to fuels and can use gas, solid, liquid, and high, medium and low calorific value fuels to meet the needs under different conditions. The present application is provided with a two-stage combustion chamber 3, which can further burn and sterilize the CO, hydrocarbon compounds, volatiles, tar, odor and other gases generated in the process of pyrolysis of dry sludge, obtain heat, and reduce the generation of harmful gases, thereby reducing the difficulty of waste gas treatment. The two-stage combustion chamber 3 is provided with a feed port 3-2 to supplement energy when needed, maintain the combustion temperature, and ensure that the waste gas is fully burned. The hopper 1-5 in front of the furnace can be used for caching sludge carbonized materials or providing sludge carbonized materials and other fuels from outside the system, so as to maintain the thermal working state of the integrated coordination device for sludge and flue gas treatment and improve ease of use.

[0045] In some embodiments, the pyrolysis chamber 2 is arranged inside the sludge carbonization material incineration chamber 1. The pyrolysis chamber 2 can directly exchange heat with the gas inside the sludge carbonization material incineration chamber 1, the radiation temperature and pressure of the equipment are large, the heating speed is fast; the low-temperature heat exchange effect is significant, so the heat exchange efficiency is particularly high, and the sensible heat is recovered to the maximum extent; the thermal efficiency is high, the energy-saving effect is significant, and reducing fuel consumption means reducing greenhouse gas emissions.

[0046] In some embodiments, the sludge carbonization material incineration chamber 1 and the second stage combustion chamber 3 are integrally arranged. The second stage combustion chamber 3 and the sludge carbonization material incineration chamber 1 are integrally arranged so that the high temperature flue gas generated in the sludge carbonization material incineration chamber 1 can fully heat the second stage combustion chamber 3, so that the second stage combustion chamber 3 can maintain a high combustion temperature. Preferably, the second stage combustion chamber 3 and the sludge carbonization material incineration chamber 1 are separated by a partition, and there is no need to separately set up the second stage combustion chamber 3 equipment, thereby improving the degree of equipment integration and reducing costs.

[0047] In some embodiments, the high-temperature flue gas generated by the pyrolysis chamber 2 and the second-stage combustion chamber 3 enters the dryer 4. This part of the high-temperature flue gas is used for heat and mass exchange in the dryer 4.

[0048] In some embodiments, part of the high-temperature flue gas generated in the sludge carbonization material incineration chamber 1 enters the pyrolysis chamber 2 , and the other part enters the second-stage combustion chamber 3 .

[0049] This application can fully utilize high-temperature flue gas step by step and reasonably recover the waste heat of high-temperature flue gas, for example, using high-temperature flue gas to maintain the exhaust gas combustion temperature, maintain the pyrolysis temperature, and dry wet sludge.

[0050] In some embodiments, the temperature in the second stage combustion chamber 3 is maintained at above 800°C. At this temperature, the waste gas generated by the pyrolysis of dry sludge into sludge carbonized material is burned more fully, and the ash produced after combustion has good activity, which can be directly sent to the ash storage together with the ash produced by the sludge carbonized material incineration chamber 1 by a conveyor for storage, and further used for mixing with cement and used as building materials. The present application uses a high-grade heat source for waste gas treatment, which has good economy and environmental friendliness.

[0051] In some embodiments, the pyrolysis chamber 2 includes: a pyrolysis chamber body 2-1, a dry sludge inlet 2-2, a carbonized material outlet 2-3, an inner layer 2-4 of the pyrolysis chamber, a middle layer 2-5 of the pyrolysis chamber, an outer layer 2-6 of the pyrolysis chamber, a pyrolysis flue gas outlet 2-7, a pyrolysis chamber high-temperature flue gas inlet 2-8, and an exhaust gas outlet 2-9; the dry sludge enters the middle layer 2-5 of the pyrolysis chamber through the dry sludge inlet 2-2, and the inner layer 2-4 of the pyrolysis chamber, the middle layer 2-5 of the pyrolysis chamber, and the outer layer 2-6 of the pyrolysis chamber contact with the dry sludge. A guide plate is provided, and the middle layer 2-5 of the pyrolysis chamber mechanically drives the dry sludge to rotate at a low speed, absorbs heat through the cylinder wall, and the dry sludge continuously moves along the middle layer 2-5 of the pyrolysis chamber and the outer layer 2-6 of the pyrolysis chamber and continuously pyrolyzes and carbonizes, and finally is discharged from the carbonized material outlet 2-3, and mechanically transmitted to the front feeding pipe 1-2 of the furnace to enter the sludge carbonized material incineration chamber 1 for incineration; the inner layer 2-4 of the pyrolysis chamber is a circular smoke pipe, which enters from the high-temperature flue gas inlet 2-8 of the pyrolysis chamber, and enters the dryer 4 from the pyrolysis flue gas outlet 2-7 after heat release. The pyrolysis chamber 2 of the present application has a compact structure, and is convenient to be integrated with the sludge carbonized material incineration chamber 1 and the second-stage combustion chamber 3. The multi-layer cylindrical structure therein can guide the dry sludge, can fully contact with the hot surface, and the dry sludge pyrolysis stroke is long, and the dry sludge is fully pyrolyzed. The inner space of the inner layer 2-4 of the pyrolysis chamber can directly form a high-temperature flue gas flow channel, which is convenient for recycling the high-temperature flue gas of other equipment for heat exchange for pyrolysis of dry sludge, and further sending the high-temperature flue gas after heat exchange to downstream equipment to continue to use the waste heat. The waste gas outlet 2-9 is arranged to collect the waste gas generated by the pyrolysis of dry sludge, so as to facilitate high-temperature combustion treatment of the waste gas.

[0052] In some embodiments, the dryer 4 is a countercurrent direct rotary dryer, including: a dryer body 4-1, a wet sludge inlet 4-2, a drying smoke inlet 4-3, a dry sludge outlet 4-4, and a drying smoke outlet 4-5; wet sludge is fed into the dryer body 4-1 from the wet sludge inlet 4-2, and high-temperature smoke enters the dryer body 4-1 from the drying smoke inlet 4-3 to release heat, gas-solid direct heat and mass exchange, dry sludge is discharged from the dry sludge outlet 4-4, and low-temperature smoke is discharged from the drying smoke outlet 4-5. This dryer can dry wet sludge with a mass moisture content of less than or equal to 60% to dry sludge with a mass moisture content of less than or equal to 20%.

[0053] In some embodiments, the inner wall of the dryer body 4-1 is provided with a crushing device, which can break up the wet sludge inside and facilitate the evaporation of water. The low-temperature flue gas less than 120°C after drying the wet sludge is discharged from the drying flue gas outlet 4-5 and enters the flue gas purification device 5. The dried dry sludge is discharged from the dry sludge outlet 4-4 and enters the pyrolysis chamber 2. The crushing device is arranged on the inner wall of the dryer body 4-1 to improve the drying efficiency of wet sludge, reduce the gas volume and gas temperature requirements for drying wet sludge, and cooperate with the high-temperature flue gas generated by the pyrolysis chamber 2 and the second-stage combustion chamber 3 to greatly reduce the external heat demand, reduce the residual temperature of the gas used for drying, and reduce the purification difficulty, which is beneficial to improve the economy and coordination of the integrated coordination device for sludge and flue gas treatment.

[0054] In some embodiments, the flue gas purification device 5 includes: a cyclone dust collector 5-1, a primary high-voltage electrostatic precipitator 5-2, jet activated carbon 5-3, a secondary high-voltage electrostatic precipitator 5-4, and a desulfurization tower 5-5. Through the flue gas purification device 5, the low-temperature gas discharged from the dryer 4 can reach the ultra-low emission standard and then be discharged into the atmosphere.

[0055] A specific embodiment of the present application is listed below in conjunction with the accompanying drawings. Figure 1 The integrated coordination device for sludge and flue gas treatment includes: a sludge carbonization material incineration chamber 1, a pyrolysis chamber 2, a second-stage combustion chamber 3, a dryer 4, and a flue gas purification device 5. In this example, the sludge carbonization material incineration chamber 1 and the second-stage combustion chamber 3 are integrally arranged and separated by a furnace wall, and the pyrolysis chamber 2 is arranged through the sludge carbonization material incineration chamber 1 and the second-stage combustion chamber 3.

[0056] like Figure 2 The sludge carbonized material incineration chamber 1 comprises: an incineration chamber body 1-1, a furnace front material discharge pipe 1-2, an incineration slag discharge pipe 1-3, a high-pressure blower 1-4, a furnace front material hopper 1-5 and an incineration flue gas outlet 1-6; the sludge carbonized material enters the incineration chamber body 1-1 through the furnace front material discharge pipe 1-2 for cracking and combustion, generating ash and high-temperature flue gas, the ash is discharged from the incineration slag discharge pipe 1-3, and the high-temperature flue gas is discharged from the incineration flue gas outlet 1-6, and the oxygen required for the cracking and combustion of the sludge carbonized material is fed in through the high-pressure blower 1-4;

[0057] like Figure 3 The pyrolysis chamber 2 comprises a pyrolysis chamber body 2-1, a dry sludge inlet 2-2, a carbonized material outlet 2-3, an inner layer 2-4 of the pyrolysis chamber, a middle layer 2-5 of the pyrolysis chamber, an outer layer 2-6 of the pyrolysis chamber, a flue gas outlet 2-7, a high-temperature flue gas inlet 2-8 of the pyrolysis chamber, and an exhaust gas outlet 2-9; the dry sludge enters the middle layer 2-5 of the pyrolysis chamber through the dry sludge inlet 2-2, and a guide plate is arranged on the inner layer 2-4 of the pyrolysis chamber, the middle layer 2-5 of the pyrolysis chamber, and the outer layer 2-6 of the pyrolysis chamber that are in contact with the dry sludge. The dry sludge is rotated at a low speed by mechanical transmission, and absorbs heat through the cylinder wall. The dry sludge continuously moves along the middle layer 2-5 of the pyrolysis chamber and the outer layer 2-6 of the pyrolysis chamber, and is continuously pyrolyzed and carbonized. Finally, it is discharged from the carbonized material outlet 2-3, and is mechanically transmitted to the front feeding pipe 1-2 to enter the sludge carbonized material incineration chamber 1 for incineration; the inner layer 2-4 of the pyrolysis chamber is a circular smoke pipe, and the smoke is drawn out from the sludge carbonized material incineration smoke outlet 1-6, enters from the high-temperature smoke inlet 2-8 of the pyrolysis chamber, and enters the dryer 4 from the smoke outlet 2-7 after heat release.

[0058] like Figure 4 The second stage combustion chamber 3 includes a second stage combustion chamber body 3-1, a feed port 3-2, an exhaust gas inlet 3-3, a second stage combustion chamber flue gas outlet 3-4, a second stage combustion chamber slag outlet 3-5, and an SCR denitrification device 3-6. The combustible exhaust gas enters the second stage combustion chamber body 3-1 through the exhaust gas inlet 3-3 and burns to generate high-temperature flue gas and ash. The high-temperature flue gas is discharged to the dryer 4 through the second stage combustion chamber flue gas outlet 3-4, and the ash is discharged through the second stage combustion chamber slag outlet 3-5. The feed port 3-2 is used to supplement fuel to maintain high temperature, and the SCR denitrification device 3-6 is used for high-temperature denitrification;

[0059] like Figure 5 The dryer 4 adopts a countercurrent direct rotary dryer, including a dryer body 4-1, a wet sludge inlet 4-2, a drying flue gas inlet 4-3, a dry sludge outlet 4-4, and a drying flue gas outlet 4-5; wet sludge is fed into the dryer body 4-1 from the wet sludge inlet 4-2, and high-temperature flue gas enters the dryer body 4-1 from the drying flue gas inlet 4-3 to release heat, and direct gas-solid heat and mass exchange is achieved. Dry sludge is discharged from the dry sludge outlet 4-4, and low-temperature flue gas is discharged from the drying flue gas outlet 4-5.

[0060] like Figure 6 The flue gas purification device 5 includes: a cyclone dust collector 5-1, a primary high-voltage electrostatic dust collector 5-2, jet activated carbon 5-3, a secondary high-voltage electrostatic dust collector 5-4, and a desulfurization tower 5-5. Through the flue gas purification device 5, the low-temperature flue gas discharged from the dryer 4 reaches the ultra-low emission standard and is discharged into the atmosphere.

[0061] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present utility model.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0063] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation methods, and the specific embodiments of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An integrated coordination device for sludge and flue gas treatment, characterized in that: include: Sludge carbonization material incineration chamber (1), pyrolysis chamber (2), second-stage combustion chamber (3), dryer (4), flue gas purification device (5); The sludge carbonized material incineration chamber (1) is used for cracking and burning the sludge carbonized material to generate ash and high-temperature flue gas, and comprises: a combustion chamber body (1-1), a furnace front material discharge pipe (1-2), a combustion slag discharge pipe (1-3), a high-pressure blower (1-4), a furnace front material hopper (1-5) and a combustion flue gas outlet (1-6); the sludge carbonized material enters the combustion chamber body (1-1) through the furnace front material discharge pipe (1-2) to crack and burn, generating ash and high-temperature flue gas, the ash is discharged from the combustion slag discharge pipe (1-3), and the high-temperature flue gas is discharged from the combustion flue gas outlet (1-6), and oxygen required for cracking and burning the sludge carbonized material is fed in through the high-pressure blower (1-4); The pyrolysis chamber (2) is used to pyrolyze the dry sludge to produce the sludge carbonized material, combustible waste gas, and high-temperature flue gas; The second stage combustion chamber (3) is used to burn the combustible waste gas to generate ash and high-temperature flue gas, and comprises a second stage combustion chamber body (3-1), a feed port (3-2), a waste gas inlet (3-3), a second stage combustion chamber flue gas outlet (3-4), a second stage combustion chamber slag outlet (3-5), and an SCR denitration device (3-6). The combustible waste gas enters the second stage combustion chamber body (3-1) through the waste gas inlet (3-3) and burns to generate high-temperature flue gas and ash. The high-temperature flue gas is discharged to the dryer (4) through the second stage combustion chamber flue gas outlet (3-4), and the ash is discharged through the second stage combustion chamber slag outlet (3-5). The feed port (3-2) is used to supplement fuel to maintain high temperature, and the SCR denitration device (3-6) is used for high-temperature denitration; The dryer (4) uses the high-temperature flue gas generated by the sludge carbonization material incineration chamber (1), the pyrolysis chamber (2), and the second-stage combustion chamber (3) to dry the wet sludge to generate dry sludge and low-temperature flue gas. The dry sludge is transported to the pyrolysis chamber (2), and the low-temperature flue gas is transported to the flue gas purification device (5); The flue gas purification device (5) is used to purify the low-temperature flue gas until it reaches the emission standard.

2. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The pyrolysis chamber (2) is arranged inside the sludge carbonized material incineration chamber (1).

3. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The sludge carbonization material incineration chamber (1) and the second-stage combustion chamber (3) are integrally arranged.

4. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The high-temperature flue gas generated by the pyrolysis chamber (2) and the second-stage combustion chamber (3) enters the dryer (4).

5. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: A portion of the high-temperature flue gas generated by the sludge carbonization material incineration chamber (1) enters the pyrolysis chamber (2), and another portion enters the second-stage combustion chamber (3).

6. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The temperature in the second-stage combustion chamber (3) is maintained above 800°C.

7. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The pyrolysis chamber (2) comprises: a pyrolysis chamber body (2-1), a dry sludge inlet (2-2), a carbonized material outlet (2-3), an inner layer of the pyrolysis chamber (2-4), a middle layer of the pyrolysis chamber (2-5), an outer layer of the pyrolysis chamber (2-6), a pyrolysis flue gas outlet (2-7), a pyrolysis chamber high-temperature flue gas inlet (2-8), and an exhaust gas outlet (2-9); the dry sludge enters the middle layer (2-5) of the pyrolysis chamber through the dry sludge inlet (2-2); the inner layer (2-4) of the pyrolysis chamber, the middle layer (2-5) of the pyrolysis chamber, and the outer layer (2-6) of the pyrolysis chamber in contact with the dry sludge are provided with guide tubes. The middle layer (2-5) of the pyrolysis chamber mechanically drives the dry sludge to rotate at a low speed, absorbing heat through the cylinder wall. The dry sludge continuously moves along the middle layer (2-5) of the pyrolysis chamber and the outer layer (2-6) of the pyrolysis chamber and is continuously pyrolyzed and carbonized, and finally discharged from the carbonized material outlet (2-3), and mechanically transmitted to the front feed pipe (1-2) of the furnace to enter the sludge carbonized material incineration chamber (1) for incineration; the inner layer (2-4) of the pyrolysis chamber is a circular smoke pipe, which enters from the high-temperature smoke inlet (2-8) of the pyrolysis chamber, and enters the dryer (4) from the pyrolysis smoke outlet (2-7) after releasing heat.

8. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The dryer (4) comprises: a dryer body (4-1), a wet sludge inlet (4-2), a drying smoke inlet (4-3), a dry sludge outlet (4-4), and a drying smoke outlet (4-5); wet sludge is fed into the dryer body (4-1) from the wet sludge inlet (4-2), high-temperature smoke enters the dryer body (4-1) from the drying smoke inlet (4-3) to release heat, and direct gas-solid heat and mass exchange is performed; the dry sludge is discharged from the dry sludge outlet (4-4), and the low-temperature smoke is discharged from the drying smoke outlet (4-5).

9. The integrated coordination device for sludge and flue gas treatment according to claim 8 is characterized in that: The inner wall of the dryer body (4-1) is provided with a crushing device to break up the wet sludge. The flue gas after cooling is discharged from the drying flue gas outlet (4-5) and enters the flue gas purification device (5). The dry sludge is discharged from the dry sludge outlet (4-4) and enters the pyrolysis chamber (2).

10. The integrated coordination device for sludge and flue gas treatment according to claim 1 is characterized in that: The flue gas purification device (5) comprises: a cyclone dust collector (5-1), a first-level high-voltage electrostatic dust collector (5-2), jet activated carbon (5-3), a second-level high-voltage electrostatic dust collector (5-4), and a desulfurization tower (5-5).

Images