Gasification incineration system for co-processing sludge and alternative fuel

Abstract

According to the sludge and alternative fuel co-processing gasification incineration system, a branch pipe of a first-path tertiary hot air header pipe is connected with an upper gasification area so as to convey high-temperature tertiary hot air; a branch pipe of the second-path tertiary hot air main pipe is connected with an incineration hot air branch pipe so as to convey high-temperature tertiary hot air to the lower incineration area; double shaftless reamers arranged on a gasification platform of the upper gasification area stir and mix sludge-alternative fuel, hot raw materials and hot air in the upper gasification area, and moisture in the sludge-alternative fuel is gasified by utilizing the hot raw materials conveyed by a hot raw material taking machine and the hot air conveyed by a branch pipe of a first-path tertiary hot air header pipe; gasified waste gas containing water vapor is connected to an air outlet pipe of the C5 cyclone cylinder through a second valve pipeline to be discharged; sludge-alternative fuel is incinerated in the second step, and hot flue gas and residues enter the decomposing furnace. According to the invention, sludge and alternative fuel are co-processed in one set of equipment, so that the equipment investment and operation cost are greatly reduced; sintering in the furnace is effectively prevented, and the clinker quality and yield are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of gasification and incineration, and in particular relates to a gasification and incineration system for coordinated treatment of sludge and alternative fuels. Background Art

[0002] At present, the disposal technology of alternative fuels in incinerators and sludge after drying is relatively mature, but the sludge only enters the preheater system as the waste gas (containing water vapor) after drying and the sludge after drying. Conventional sludge drying or incineration waste gas and residue cannot enter the preheater together. Conventionally, the waste gas is introduced into the front of the grate cooler for incineration, which corrodes and increases the burden on the blades of the grate cooler induced draft fan. The residue needs to be added with a water cooling or air cooling system and needs to be transported back to the raw material area. And when the system processing capacity increases, the waste gas (containing water vapor) after drying and the sludge after drying entering the preheater system have a greater impact on the kiln condition.

[0003] In addition, sludge is directly mixed with alternative fuels and put into the incinerator. During incineration, the hot air as high as 1000°C can only evaporate the water on the surface of the sludge (50% moisture), and the water in the cell wall comes out. The agglomerated or lumpy sludge cannot be fully burned in the incinerator and falls into the decomposition furnace. Then it falls into the smoke chamber through the shrinkage at the bottom of the decomposition furnace. Accumulation or crusting occurs at the bottom of the decomposition furnace and in the smoke chamber. Some sludge blocks are wrapped into balls by raw meal powder and cannot be fully burned. Finally, clinker with sludge core appears in the finished clinker, which seriously affects the quality and output of the clinker. Summary of the invention

[0004] To this end, the present invention provides a sludge and alternative fuel coordinated treatment gasification incineration system to solve the problem that traditional technology can only treat sludge and alternative fuel separately and cannot be treated in coordination, and the treatment capacity is low and has a great impact on the kiln system, which seriously affects the quality and output of clinker.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a sludge and alternative fuel coordinated treatment gasification and incineration system, comprising a gasification and incineration furnace body, wherein the gasification and incineration furnace body is provided with an upper gasification zone and a lower incineration zone;

[0006] A sludge-alternative fuel feed port is provided on the side of the upper gasification zone, and the sludge-alternative fuel feed port is connected to the interior of the upper gasification zone through a double shaftless reamer on the gasification platform; a split hot raw material interface is provided on the top of the upper gasification zone, and the upper gasification zone is connected to a hot raw material reclaimer through the split hot raw material interface;

[0007] It also includes a tertiary hot air main pipe, which is divided into two routes after passing through a high-temperature gate valve:

[0008] The branch pipe of the first tertiary hot air main pipe is connected to the upper gasification zone through a gasification hot air branch pipe controlled by a first valve to transport high-temperature tertiary hot air to the upper gasification zone;

[0009] The branch pipe of the second tertiary hot air main pipe is connected to the incineration hot air branch pipe on the first step side controlled by the air cannon group in the upper gasification zone to transport high-temperature tertiary hot air to the lower incineration zone;

[0010] The double shaftless reamers on the gasification platform stir and mix the sludge-alternative fuel, hot raw meal and high-temperature tertiary hot air in the upper gasification zone, and utilize the heat brought by the hot raw meal delivered by the hot raw meal reclaimer and the hot air delivered by the branch pipe of the first tertiary hot air main pipe to gasify the moisture in the sludge-alternative fuel. The waste gas containing water vapor after gasification is connected to the C5 cyclone outlet pipe through the pipeline controlled by the second valve for discharge;

[0011] The sludge-alternative fuel is incinerated in the second stage controlled by the air cannon group in the lower incineration zone, and the hot flue gas and residue after incineration enter the decomposition furnace together with the high-temperature tertiary hot air transported by the incineration hot air branch pipe.

[0012] As an optimal solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, the sludge-alternative fuel feed port is connected to a sludge-alternative fuel feeding pipeline, and the sludge-alternative fuel feeding pipeline is provided with a first pneumatic gate valve, a rotary feeder and a second pneumatic gate valve, and the first pneumatic gate valve, the rotary feeder and the second pneumatic gate valve are sequentially connected to the sludge-alternative fuel feeding pipeline.

[0013] As a preferred solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, a first hot raw material conveying pipeline is connected between the hot raw material feeder and the diversion hot raw material interface, and the first hot raw material conveying pipeline is connected to a first flap valve.

[0014] As a preferred solution for the sludge and alternative fuel coordinated gasification and incineration system, the hot raw meal feeder and the top interface of the lower incineration zone are also connected to a second hot raw meal conveying pipeline, and the second hot raw meal conveying pipeline is provided with a dividing valve and a second flap valve.

[0015] As a preferred solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, the upper gasification zone is connected to the C5 cyclone outlet pipe through a pipeline with a first temperature sensor, a first pressure sensor, and a second valve; the first temperature sensor, the first pressure sensor, and the second valve are used to regulate the discharge state of the water vapor-containing exhaust gas in the upper gasification zone through a pipeline controlled by the second valve connected to the C5 cyclone outlet pipe.

[0016] As an optimal solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, the sludge-alternative fuel added to the sludge-alternative fuel feed port first falls onto the gasification platform where the double shaftless reamer is located, and after gasification and drying, it goes to the side of the first step controlled by the air cannon group of the upper gasification zone, and the air cannon group of the upper gasification zone controls the conveying progress by a preset striking frequency, and finally goes to the second step controlled by the air cannon group of the lower incineration zone, and the air cannon group of the lower incineration zone controls the conveying progress by a preset striking frequency, and the hot flue gas and residue after incineration enter the decomposition furnace.

[0017] As a preferred solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, the upper gasification zone is connected to a gasification zone observation camera, which is used to observe the material transportation and gasification state of the upper gasification zone;

[0018] The lower incineration zone is connected to an incineration zone observation camera, and the incineration zone observation camera is used to observe the material transportation and incineration status of the lower incineration zone.

[0019] As a preferred solution for the sludge and alternative fuel coordinated disposal gasification and incineration system, the tertiary hot air main pipe is connected to a second temperature sensor and a second pressure sensor;

[0020] A third temperature sensor and a third pressure sensor are provided on the branch pipe of the first tertiary hot air main pipe;

[0021] A fourth temperature sensor and a fourth pressure sensor are provided on the branch pipes of the second tertiary hot air main pipe.

[0022] As a preferred solution for the sludge and alternative fuel coordinated disposal gasification and incineration system, a fifth temperature sensor and a fifth pressure sensor are connected to the side of the upper gasification zone;

[0023] The side of the lower incineration zone is connected with a sixth temperature sensor and a sixth pressure sensor.

[0024] As a preferred solution for the gasification and incineration system for the coordinated disposal of sludge and alternative fuels, the first hot raw material conveying pipeline is connected to a seventh temperature sensor.

[0025] The present invention has the following advantages: the gasification incinerator body is provided with an upper gasification zone and a lower incineration zone; a sludge-alternative fuel feed port is provided on the side of the upper gasification zone, and the sludge-alternative fuel feed port is connected to the interior of the upper gasification zone through a double shaftless reamer; a split hot raw material interface is provided on the top of the upper gasification zone, and the upper gasification zone is connected to a hot raw material feeder through the split hot raw material interface; it also includes a tertiary hot air main pipe, and the tertiary hot air main pipe is divided into two routes after passing through a high-temperature gate valve: a branch pipe of the first tertiary hot air main pipe is connected to the upper gasification zone through a gasification hot air branch pipe controlled by a first valve to transport high-temperature tertiary hot air to the upper gasification zone; a branch pipe of the second tertiary hot air main pipe The branch pipe is connected to the incineration hot air branch pipe on the side of the first step controlled by the air cannon group in the upper gasification zone to transport high-temperature tertiary hot air to the lower incineration zone; the double shaftless reamers on the gasification platform stir and mix the sludge-alternative fuel, hot raw material, and high-temperature tertiary hot air in the upper gasification zone, and use the heat brought by the hot raw material transported by the hot raw material feeder and the hot air transported by the branch pipe of the first tertiary hot air main pipe to gasify the moisture in the sludge-alternative fuel; the sludge-alternative fuel is incinerated in the second step controlled by the air cannon group in the lower incineration zone, and the hot flue gas and residue after incineration enter the decomposition furnace together with the high-temperature tertiary hot air transported by the incineration hot air branch pipe. The present invention realizes the coordinated disposal of alternative fuels and sludge in a set of equipment, with a large processing capacity, reducing the workload of the later disposal of waste gas and the disposal of residues; the waste gas and residue after incineration enter the decomposition furnace and then undergo high-temperature incineration, and the system is simple, stable and reliable; it can effectively prevent sintering in the furnace and ensure the quality and output of clinker. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the structure of a gasification and incineration system for the coordinated treatment of sludge and alternative fuels provided in an embodiment of the present invention.

[0028] In the figure, 1, gasification incinerator body; 2, upper gasification zone; 3, lower incineration zone; 4, sludge-alternative fuel feed port; 5, double shaftless reamer; 6, split hot raw material interface; 7, hot raw material feeder; 8, tertiary hot air main pipe; 9, high-temperature gate valve; 10, first valve; 11, first step; 12, incineration hot air branch pipe; 13, second step; 14, decomposition furnace; 15, sludge-alternative fuel feeding pipeline; 16, first pneumatic gate valve; 17, rotary feeder; 18, second pneumatic gate valve; 19, first hot raw material conveying pipeline; 20, first flap valve; 21, second Hot raw material conveying pipeline; 22, material distribution valve; 23, second flap valve; 24, first temperature sensor; 25, first pressure sensor; 26, second valve; 27, gasification zone observation camera; 28, incineration zone observation camera; 29, second temperature sensor; 30, second pressure sensor; 31, third temperature sensor; 32, third pressure sensor; 33, fourth temperature sensor; 34, fourth pressure sensor; 35, fifth temperature sensor; 36, fifth pressure sensor; 37, sixth temperature sensor; 38, sixth pressure sensor; 39, seventh temperature sensor. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0030] See also Figure 1 ,The embodiment of the present invention provides a sludge and alternative fuel coordinated treatment gasification and incineration system, including a gasification and incineration furnace body 1, the gasification and incineration furnace body 1 is provided with an upper gasification zone 2 and a lower incineration zone 3;

[0031] Among them, a sludge-alternative fuel feed port 4 is provided on the side of the upper gasification zone 2, and the sludge-alternative fuel feed port 4 is connected to the interior of the upper gasification zone 2 through a double shaftless reamer 5; a split hot raw material interface 6 is provided on the top of the upper gasification zone 2, and the upper gasification zone 2 is connected to a hot raw material reclaimer 7 through the split hot raw material interface 6;

[0032] In addition, it also includes a tertiary hot air main pipe 8, which is divided into two routes after passing through a high-temperature gate valve 9:

[0033] The branch pipe of the first tertiary hot air main pipe 8 is connected to the upper gasification zone 2 through the gasification hot air branch pipe controlled by the first valve 10 to transport high-temperature tertiary hot air to the upper gasification zone 2;

[0034] The branch pipe of the second tertiary hot air main pipe 8 is connected to the combustion hot air branch pipe 12 on one side of the first step 11 controlled by the air cannon group of the upper gasification zone 2, so as to transport high-temperature tertiary hot air to the lower combustion zone 3;

[0035] The dual shaftless reamers 5 on the gasification platform stir and mix the sludge-alternative fuel, hot raw meal and high-temperature tertiary hot air in the upper gasification zone 2, and use the heat brought by the hot raw meal delivered by the hot raw meal reclaimer 7 and the hot air delivered by the branch pipe of the first tertiary hot air main pipe 8 to gasify the moisture in the sludge-alternative fuel;

[0036] Among them, the sludge-alternative fuel is burned in the second step 13 controlled by the air cannon group in the lower incineration zone 3, and the hot flue gas and residue after incineration enter the decomposition furnace 14 together with the high-temperature tertiary hot air transported by the incineration hot air branch pipe 12.

[0037] In this embodiment, the sludge-alternative fuel feed port 4 is connected to the sludge-alternative fuel feeding pipeline 15, and the sludge-alternative fuel feeding pipeline 15 is provided with a first pneumatic gate valve 16, a rotary feeder 17 and a second pneumatic gate valve 18. The first pneumatic gate valve 16, the rotary feeder 17 and the second pneumatic gate valve 18 are connected to the sludge-alternative fuel feeding pipeline 15 in sequence; the upper gasification zone 2 is connected to the C5 cyclone outlet pipe through a pipeline with a first temperature sensor 24, a first pressure sensor 25 and a second valve 26.

[0038] Specifically, the sludge and alternative fuel mixture enters the sludge-alternative fuel feed port 4 on the dual shaftless reamer 5 through the first pneumatic gate valve 16, the rotary feeder 17 and the second pneumatic gate valve 18, and is then transported by the dual shaftless reamer 5 to the upper gasification zone 2 of the gasification incinerator body 1. Among them, the double shaftless reamer 5 arranged in the upper gasification zone 2 fully mixes the sludge with the alternative fuel, hot raw meal, and the hot air transported by the branch pipe of the first tertiary hot air main pipe 8 through stirring, and uses the heat brought by the hot raw meal transported by the hot raw meal feeder 7 to gasify the moisture in the sludge and the alternative fuel. The temperature of the upper gasification zone 2 is controlled at about 500°C. A part of the waste gas containing water vapor after gasification is introduced into the C5 cyclone outlet pipe through the pipeline with the first temperature sensor 24, the first pressure sensor 25, and the second valve 26, and the other part falls with the gasified sludge and the alternative fuel onto the first step 11 controlled by the air cannon group of the upper gasification zone 2.

[0039] According to the temperature and pressure of the exhaust gas containing water vapor discharged from the upper gasification zone 2, the pipeline opening of the second valve 26 is adjusted to control the amount of exhaust gas containing water vapor after gasification and introduce it into the C5 cyclone outlet pipe. The exhaust gas containing water vapor and the exhaust gas temperature discharged from the upper gasification zone 2 are controlled, and the operation is performed simultaneously from two aspects. On the one hand, when the temperature of the exhaust gas containing water vapor discharged from the upper gasification zone 2 exceeds 200°C, the second valve 26 for controlling the exhaust gas entering the C5 cyclone outlet pipe is adjusted down, and vice versa, the second valve 26 is adjusted up, and the second valve 26 introduced into the C5 cyclone outlet pipe is controlled by the first temperature sensor 24 and the first pressure sensor 25 to control the exhaust gas discharge amount. Aspect 2 is to control the temperature of the waste gas containing water vapor after gasification by adjusting the opening of the first valve 10 and the operating speed of the hot raw material feeder 7. When the temperature exceeds 200°C, the opening of the first valve 10 is reduced or the operating speed of the hot raw material feeder 7 is lowered. Conversely, the opening of the first valve 10 is increased or the operating speed of the hot raw material feeder 7 is increased to achieve waste gas discharge temperature control.

[0040] Among them, the sludge-alternative fuel added to the sludge-alternative fuel feed port 4 first falls onto the gasification platform where the double shaftless reamer 5 is located, and after gasification and drying, it reaches the side of the first step 11 controlled by the air cannon group of the upper gasification zone 2, and the air cannon group of the upper gasification zone 2 controls the conveying progress through a preset striking frequency, and finally reaches the second step 13 controlled by the air cannon group of the lower incineration zone 3, and the air cannon group of the lower incineration zone 3 controls the conveying progress through a preset striking frequency, and the hot flue gas and residue after incineration enter the decomposition furnace 14.

[0041] In this embodiment, a first hot raw material conveying pipeline 19 is connected between the hot raw material reclaimer 7 and the hot raw material diversion interface 6, and a first flap valve 20 is connected to the first hot raw material conveying pipeline 19. A second hot raw material conveying pipeline 21 is also connected between the hot raw material reclaimer 7 and the top interface of the lower incineration zone 3, and the second hot raw material conveying pipeline 21 is provided with a diversion valve 22 and a second flap valve 23.

[0042] Specifically, the hot raw material taker 7 enters the gasification incinerator body 1 in two ways. One way is to take out the hot raw material from the bottom of the hot raw material taker 7, and then send the hot raw material to the upper interface of the upper gasification zone 2 of the gasification incinerator through the first flap valve 20 on the first hot raw material conveying pipeline 19, and enter the mixing and breaking double shaftless reamer 5 in the upper gasification zone 2 of the gasification incinerator body 1, and mix with the sludge and alternative fuel, so as to provide heat for the gasification of the sludge and alternative fuel. The other way is to take the hot raw material from the hot raw material taker 7, and then pass through the dividing valve 22 and the second flap valve 23 on the second hot raw material conveying pipeline 21 to the top interface of the lower combustion zone 3 of the gasification incinerator body 1, so as to control the furnace temperature of the lower combustion zone 3 of the gasification incinerator body 1, and prevent the sintering and coking of materials in the furnace.

[0043] In a possible embodiment, the upper gasification zone 2 is connected to a gasification zone observation camera 27, which is used to observe the material transportation and gasification status of the upper gasification zone 2; the lower incineration zone 3 is connected to an incineration zone observation camera 28, which is used to observe the material transportation and incineration status of the lower incineration zone 3.

[0044] In a possible embodiment, the tertiary hot air main pipe 8 is connected to a second temperature sensor 29 and a second pressure sensor 30; a third temperature sensor 31 and a third pressure sensor 32 are provided on the branch pipe of the first tertiary hot air main pipe 8; and a fourth temperature sensor 33 and a fourth pressure sensor 34 are provided on the branch pipe of the second tertiary hot air main pipe 8.

[0045] Specifically, the second temperature sensor 29 and the second pressure sensor 30 are used to monitor the temperature and pressure of the tertiary hot air main pipe 8 respectively; the third temperature sensor 31 and the third pressure sensor 32 are used to monitor the temperature and pressure of the hot air provided for the gasification of sludge and alternative fuel entering the upper gasification zone 2. The fourth temperature sensor 33 and the fourth pressure sensor 34 are used to monitor the temperature and pressure of the hot air provided for the gasification of sludge and alternative fuel entering the lower incineration zone 3.

[0046] In a possible embodiment, a fifth temperature sensor 35 and a fifth pressure sensor 36 are connected to the side of the upper gasification zone 2; the fifth temperature sensor 35 and the fifth pressure sensor 36 are used to monitor the temperature and pressure in the upper gasification zone 2, and adjust the feeding system, the air distribution system, and the material distribution system according to the feedback of the temperature and pressure data.

[0047] In a possible embodiment, a sixth temperature sensor 37 and a sixth pressure sensor 38 are connected to the side of the lower incineration zone 3. The sixth temperature sensor 37 and the sixth pressure sensor 38 are used to monitor the temperature and pressure in the lower incineration zone 3, and then adjust the opening of the hot raw material distribution valve 22 and the second flap valve 23 to control the temperature in the lower incineration zone 3.

[0048] In a possible embodiment, the first hot raw material conveying pipeline 19 is connected to a seventh temperature sensor 39. The seventh temperature sensor 39 is used to monitor the temperature of the hot raw material input into the upper gasification zone 2 by the hot raw material taker 7.

[0049] In summary, the gasification incinerator body 1 of the present invention is provided with an upper gasification zone 2 and a lower incineration zone 3; a sludge-alternative fuel feed port 4 is provided on the side of the upper gasification zone 2, and the sludge-alternative fuel feed port 4 is connected to the interior of the upper gasification zone 2 through a double shaftless reamer 5; a split hot raw material interface 6 is provided on the top of the upper gasification zone 2, and the upper gasification zone 2 is connected to a hot raw material feeder 7 through the split hot raw material interface 6; it also includes a tertiary hot air main pipe 8, and the tertiary hot air main pipe 8 is divided into two routes after passing through a high-temperature gate valve 9: the branch pipe of the first tertiary hot air main pipe 8 is connected to the upper gasification zone 2 through a gasification hot air branch pipe controlled by a first valve 10, so as to transport high-temperature tertiary hot air to the upper gasification zone 2; the second tertiary hot air main pipe 8 is connected to the upper gasification zone 2 through a gasification hot air branch pipe controlled by a first valve 10, so as to transport high-temperature tertiary hot air to the upper gasification zone 2; The branch pipe of the main pipe 8 is connected to the incineration hot air branch pipe 12 on the side of the first step 11 controlled by the air cannon group of the upper gasification zone 2 to transport high-temperature tertiary hot air to the lower incineration zone 3; the double shaftless reamer 5 stirs and mixes the sludge-alternative fuel, hot raw material, and high-temperature tertiary hot air in the upper gasification zone 2, and uses the heat brought by the hot raw material conveyed by the hot raw material feeder 7 and the hot air conveyed by the branch pipe of the first tertiary hot air main pipe 8 to gasify the moisture in the sludge-alternative fuel; the sludge-alternative fuel is incinerated in the second step 13 controlled by the air cannon group of the lower incineration zone 3, and the hot flue gas and residue after incineration enter the decomposition furnace 14 together with the high-temperature tertiary hot air conveyed by the incineration hot air branch pipe 12. The sludge and alternative fuel mixture enters the sludge-alternative fuel feed port 4 on the double shaftless reamer 5 through the first pneumatic gate valve 16, the rotary feeder 17 and the second pneumatic gate valve 18, and is then transported to the upper gasification zone 2 of the gasification incinerator body 1 by the double shaftless reamer 5. The double shaftless reamer 5 arranged in the upper gasification zone 2 fully mixes the sludge with the alternative fuel, the hot raw meal and the hot air transported by the branch pipe of the first tertiary hot air main pipe 8 through stirring, and uses the heat brought by the hot raw meal transported by the hot raw meal taker 7 to gasify the moisture in the sludge and the alternative fuel. The temperature of the upper gasification zone 2 is controlled at about 500°C. A part of the waste gas containing water vapor after gasification is introduced into the C5 cyclone outlet pipe through the pipeline with the first temperature sensor 24, the first pressure sensor 25 and the second valve 26, and the other part falls to the first step 11 controlled by the air cannon group of the upper gasification zone 2 with the gasified sludge and the alternative fuel. According to the temperature and pressure of the exhaust gas containing water vapor discharged from the upper gasification zone 2, the pipeline opening of the second valve 26 is adjusted to control the amount of exhaust gas containing water vapor after gasification and introduce it into the C5 cyclone outlet pipe. The exhaust gas containing water vapor and the exhaust gas temperature discharged from the upper gasification zone 2 are controlled, and the operation is performed simultaneously from two aspects. On the one hand, when the temperature of the exhaust gas containing water vapor discharged from the upper gasification zone 2 exceeds 200°C, the second valve 26 for controlling the exhaust gas entering the C5 cyclone outlet pipe is adjusted down, and vice versa, the second valve 26 is adjusted up, and the second valve 26 introduced into the C5 cyclone outlet pipe is controlled by the first temperature sensor 24 and the first pressure sensor 25 to control the exhaust gas discharge amount.Aspect 2: By adjusting the opening of the first valve 10 and the operating speed of the hot raw material reclaimer 7, the temperature of the waste gas containing water vapor after gasification is controlled. When the temperature exceeds 200°C, the opening of the first valve 10 is reduced or the operating speed of the hot raw material reclaimer 7 is reduced. On the contrary, the opening of the first valve 10 is increased or the operating speed of the hot raw material reclaimer 7 is increased to achieve waste gas discharge temperature control. The sludge-alternative fuel added to the sludge-alternative fuel feed port 4 first falls onto the gasification platform where the double shaftless reamer 5 is located, and after gasification and drying, it reaches the first step 11 controlled by the air cannon group of the upper gasification zone 2, and the air cannon group of the upper gasification zone 2 controls the conveying progress by the preset striking frequency, and finally reaches the second step 13 controlled by the air cannon group of the lower incineration zone 3, and the air cannon group of the lower incineration zone 3 controls the conveying progress by the preset striking frequency. The residue and flue gas after incineration enter the decomposition furnace 14. The hot raw material taker 7 enters the gasification incinerator body 1 in two ways. One way is to take out the hot raw material from the bottom of the hot raw material taker 7, and then send the hot raw material to the upper interface of the upper gasification zone 2 of the gasification incinerator through the first flap valve 20 on the first hot raw material conveying pipeline 19, and enter the double shaftless reamer 5 on the gasification platform of the upper gasification zone 2 of the gasification incinerator body 1 to mix and break it up, and mix it with the sludge and alternative fuel, so as to provide heat for the gasification of the sludge and alternative fuel. The other way is to take the hot raw material from the hot raw material taker 7, and then pass through the dividing valve 22 and the second flap valve 23 on the second hot raw material conveying pipeline 21 to the top interface of the lower combustion zone 3 of the gasification incinerator body 1, so as to control the furnace temperature of the lower combustion zone 3 of the gasification incinerator body 1, and prevent the occurrence of material sintering and coking in the furnace. The present invention realizes the coordinated treatment of sludge and alternative fuels in one set of equipment, realizes the pyrolysis of odor after sludge gasification, solves the problem that conventional waste gas needs to be treated through a gas purification system, and greatly reduces equipment investment and operating costs; realizes that the waste gas and residue after sludge and alternative fuel gasification and incineration enter the decomposition furnace and then undergo high-temperature incineration, and the system is stable and reliable. This system can realize the coordinated treatment of sludge and alternative fuels, has a large processing capacity, effectively prevents sintering in the furnace, ensures the quality and quality of clinker, and greatly reduces the impact on the kiln system.

[0050] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A sludge and alternative fuel coordinated treatment gasification and incineration system, characterized in that: It comprises a gasification incinerator body (1), wherein the gasification incinerator body (1) is provided with an upper gasification zone (2) and a lower incineration zone (3); A sludge-alternative fuel feed port (4) is provided on the side of the upper gasification zone (2), and the sludge-alternative fuel feed port (4) is connected to the interior of the upper gasification zone (2) through a double shaftless reamer (5) on the gasification platform; a split hot raw material interface (6) is provided on the top of the upper gasification zone (2), and the upper gasification zone (2) is connected to a hot raw material feeder (7) through the split hot raw material interface (6); It also includes a tertiary hot air main pipe (8), which is divided into two paths after passing through a high-temperature gate valve (9): The branch pipe of the first tertiary hot air main pipe (8) is connected to the upper gasification zone (2) via a gasification hot air branch pipe controlled by a first valve (10) to transport high-temperature tertiary hot air to the upper gasification zone (2); The branch pipe of the second tertiary hot air main pipe (8) is connected to the combustion hot air branch pipe (12) on the side of the first step (11) controlled by the air cannon group of the upper gasification zone (2) to transport high-temperature tertiary hot air to the lower combustion zone (3); The dual shaftless reamers (5) on the gasification platform stir and mix the sludge-alternative fuel, hot raw meal and high-temperature tertiary hot air in the upper gasification zone (2), and utilize the heat brought by the hot raw meal delivered by the hot raw meal taker (7) and the hot air delivered by the branch pipe of the first tertiary hot air main pipe (8) to gasify the moisture in the sludge-alternative fuel. The waste gas containing water vapor after gasification is connected to the C5 cyclone outlet pipe through the pipeline controlled by the second valve (26) and discharged; The sludge-alternative fuel is incinerated in the second step (13) controlled by the air cannon group in the lower incineration zone (3), and the hot flue gas and residue after incineration enter the decomposition furnace (14) together with the high-temperature tertiary hot air transported by the incineration hot air branch pipe (12).

2. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: The sludge-alternative fuel feed port (4) is connected to a sludge-alternative fuel feeding pipeline (15), and the sludge-alternative fuel feeding pipeline (15) is provided with a first pneumatic gate valve (16), a rotary feeder (17) and a second pneumatic gate valve (18), and the first pneumatic gate valve (16), the rotary feeder (17) and the second pneumatic gate valve (18) are sequentially connected to the sludge-alternative fuel feeding pipeline (15).

3. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: A first hot raw material conveying pipeline (19) is connected between the hot raw material taking machine (7) and the hot raw material diversion interface (6), and the first hot raw material conveying pipeline (19) is connected to a first flap valve (20).

4. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 3 is characterized in that: The hot raw material taking machine (7) and the top interface of the lower incineration zone (3) are also connected to a second hot raw material conveying pipeline (21), and the second hot raw material conveying pipeline (21) is provided with a material distribution valve (22) and a second flap valve (23).

5. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: The upper gasification zone (2) is connected to the C5 cyclone outlet pipe via a pipeline with a first temperature sensor (24), a first pressure sensor (25), and a second valve (26); the first temperature sensor (24), the first pressure sensor (25), and the second valve (26) are used to control the exhaust gas containing water vapor in the upper gasification zone (2) to be discharged through the pipeline controlled by the second valve (26) and connected to the C5 cyclone outlet pipe.

6. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: The sludge-alternative fuel added through the sludge-alternative fuel feed port (4) first falls onto the gasification platform where the dual shaftless reamer (5) is located, and after being gasified and dried, it reaches the side of the first step (11) controlled by the air cannon group of the upper gasification zone (2), and the conveying progress is controlled by the air cannon group of the upper gasification zone (2) through a preset striking frequency, and finally reaches the second step (13) controlled by the air cannon group of the lower incineration zone (3), and the conveying progress is controlled by the air cannon group of the lower incineration zone (3) through a preset striking frequency, and the hot flue gas and residue after incineration enter the decomposition furnace (14).

7. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: The upper gasification zone (2) is connected to a gasification zone observation camera (27), and the gasification zone observation camera (27) is used to observe the material transportation and gasification state of the upper gasification zone (2); The lower incineration zone (3) is connected to an incineration zone observation camera (28), and the incineration zone observation camera (28) is used to observe the material transportation and incineration status of the lower incineration zone (3).

8. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1 is characterized in that: The tertiary hot air main pipe (8) is connected to a second temperature sensor (29) and a second pressure sensor (30); A third temperature sensor (31) and a third pressure sensor (32) are provided on the branch pipe of the first tertiary hot air main pipe (8); A fourth temperature sensor (33) and a fourth pressure sensor (34) are provided on the branch pipes of the second tertiary hot air main pipe (8).

9. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 1, characterized in that: A fifth temperature sensor (35) and a fifth pressure sensor (36) are connected to the side of the upper gasification zone (2); A sixth temperature sensor (37) and a sixth pressure sensor (38) are connected to the side of the lower incineration zone (3).

10. The sludge and alternative fuel coordinated treatment gasification and incineration system according to claim 3, characterized in that: The first hot raw material conveying pipeline (19) is connected to a seventh temperature sensor (39).

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