Garbage gasification tar regasification incineration utilization device

Abstract

The utility model provides a garbage gasification tar regasification incineration utilization device, which relates to the technical field of garbage disposal, and comprises a liquefaction module, a gasification module, a drainage module and a combustion module, the liquefaction module comprises a cooking container and a liquefaction heating mechanism, the gasification module comprises a heat exchanger, tar liquefied by the liquefaction module is converted into a gas state after being heated by the heat exchanger, and the combustion module is connected with the drainage module. The drainage module comprises a drainage pipe allowing high-temperature fuel gas to enter, gasified tar and the high-temperature fuel gas are mixed and then jointly enter the combustion module to be combusted, and heat exchange exists between the combustion module and the liquefaction heating mechanism and between the combustion module and the heat exchanger. Through the arrangement of the liquefaction module, the gasification module, the drainage module and the combustion module, solid residue separation of tar, mixing with high-temperature fuel gas in a purified state and high-temperature stable-pressure combustion utilization are achieved, garbage tar is gasified and incinerated again, and resource reutilization is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage treatment technical field especially is garbage gasification tar re -gasification incineration device. BACKGROUND

[0002] In the cooling, gas purification and other processes in the garbage gasification process, garbage tar, tar residue and other substances will be produced, which are different from coal tar, in solid state at room temperature, containing a small amount of dust and other particulate matter. Garbage tar has high viscosity, improper handling can cause environmental pollution.

[0003] Due to the high calorific value of garbage gasification tar, as a solid waste disposal, there is a waste of resources, which can be used as a raw material for resource utilization, especially after multi-stage heating, it can continue to mix with high-temperature fuel gas generated by garbage gasification and then be burned for reuse. At present, garbage gasification tar, tar residue and other solid wastes are disposed of, the resource utilization is low, the market promotion is difficult, and the processing cost is high, which hinders the technical promotion of garbage gasification disposal. In view of the above problems, the present application is proposed. SUMMARY

[0004] The utility model discloses a garbage gasification tar re -gasification incineration device can collect the tar, tar residue and other substances in the garbage gasification process and carry out the resource utilization again, solve the problem of low resource utilization rate caused by the solid waste disposal of garbage gasification tar, tar residue at the present stage.

[0005] In order to solve the above problems, the utility model provides a garbage gasification tar re -gasification incineration device, including liquefaction module, gasification module, drainage module and combustion module, the liquefaction module includes the steaming container and liquefied heating mechanism, is used for converting solid tar into liquid, completes solid residue separation, the gasification module includes the heat exchanger, the tar liquefied by the liquefaction module is converted into gaseous state after heating through the heat exchanger, the drainage module includes the drainage pipe for high-temperature fuel gas to enter, and the gasified tar mixes with high-temperature fuel gas and then enters the combustion module for combustion, the combustion module has heat exchange between the liquefied heating mechanism and the heat exchanger, so as to realize the balance and reuse of relevant energy, and the tar is converted into purified flue gas after high-temperature combustion, meeting the emission requirement.

[0006] According to an embodiment of the utility model, the garbage gasification tar re -gasification incineration device further includes a feeding module, the feeding module includes a storage bin and a heating device, the storage bin is connected with the steaming container, the heating device is used for heating the tar in the storage bin, so that the internal substances have certain flowability and can be transported, and the heating device has heat exchange with the liquefied heating mechanism or the heat exchanger.

[0007] According to an embodiment of the utility model, the storage bin and the steaming container are both provided with a stirring device.

[0008] According to an embodiment of the utility model, nitrogen seal is arranged at the feeding opening of the storage bin, which is used for avoiding the storage bin from entering air during the material adding process and maintaining the pressure balance of the system, and the source of the nitrogen seal mainly comes from the nitrogen tank of the nitrogen generator.

[0009] According to an embodiment of the utility model, the gasification module further comprises a pressurizing pump and a spraying device, the pressurizing pump and the spraying device are connected with the cooking container, and the liquefied tar is sprayed to the heat exchanger by the spraying device.

[0010] Preferably, the heat exchanger comprises a plurality of groups of heating gas channels, liquefied tar spraying and gasification channels, wherein the liquefied tar spraying and gasification channels are the main channels for the gasification of the liquefied tar.

[0011] According to an embodiment of the utility model, the drainage module comprises a primary drainage pipe and a secondary drainage pipe, the secondary drainage pipe is used for the drainage of high-temperature fuel gas, and the primary drainage pipe utilizes inert gas for drainage.

[0012] Preferably, the primary drainage pipe utilizes nitrogen for primary drainage.

[0013] According to an embodiment of the utility model, the drainage module further comprises a speed reduction pipe, and the gasified tar is reduced in speed by the speed reduction pipe after being drained twice.

[0014] According to an embodiment of the utility model, the combustion module comprises a fuel gas boiler, a steam heat exchange water pipe and a steam drum, the steam drum stores the steam generated after the heat exchange of the steam heat exchange water pipe, and the steam can be used by modules requiring heat.

[0015] According to an embodiment of the utility model, the liquefied heating mechanism comprises a steam heating coil pipe, and the steam heating coil pipe is connected with the steam drum.

[0016] According to an embodiment of the utility model, the fuel gas boiler is connected with the heat exchanger through a heating flue gas pipeline.

[0017] Preferably, a heating flue gas flow adjusting valve is arranged on the heating flue gas pipeline, an adjusting valve is arranged on the fuel gas boiler, the heating flue gas flow adjusting valve and the adjusting valve can adjust the flow of flue gas entering the steam heat exchange water pipe for heat exchange and the flow of tar flue gas in the heating heat exchanger, and the two flue gases are finally collected together and introduced by a subsequent fan and then enter a subsequent process.

[0018] The utility model discloses a beneficial effect is, through the setting of liquefaction module, gasification module, drainage module and combustion module, realized tar solid residue separation, under the purification state and high -temperature gas's mixture, high -temperature steady pressure combustion utilization, make garbage tar re -gasification incineration, realized the resource reutilization, through the device effective processing after garbage tar, tar residue is after high -temperature incineration, converts into the purified flue gas, satisfies the national ultra -clean emission requirement;

[0019] The scheme cooperates with garbage high-temperature gasification disposal technology, can cooperatively dispose related accessory solid wastes in garbage low-temperature gasification disposal technology, such as gasification tar, tar residue etc., realizes the balance and utilization of related energy, is suitable for multi-technology cooperative promotion, can effectively reduce garbage gasification disposal operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model is further illustrated below in connection with the drawings and examples.

[0021] Figure 1 It is whole structure schematic diagram for garbage gasification tar re -gasification incineration utilization device;

[0022] Figure 2 It is structure schematic diagram for the place of feeding module and liquefaction module;

[0023] Figure 3 It is structure schematic diagram for the place of gasification module and drainage module;

[0024] Figure 4 It is structure schematic diagram for combustion module;

[0025] Figure 5 It is cross section structure schematic diagram for heat exchanger;

[0026] 1 - feed inlet; 2 - stirring device; 3 - arch breaking device; 4 - feeding screw; 5 - nitrogen seal; 6 - storage bin; 7 - heating device; 10 - stirring device; 11 - steam input pipe; 12 - steam heating coil; 13 - condensed water outlet; 14 - liquefied tar outlet; 15 - solid residue outlet; 16 - on-off valve; 17 - flow control valve; 18 - cooking vessel; 19 - temperature gauge; 20 - low material level; 21 - high material level; 22 - steam flow regulating valve; 23 - pressure pump; 24 - injection device; 25 - heat exchanger; 25a - heating gas passage; 25b - liquefied tar injection and gasification passage; 26 - heating flue gas pipe; 27 - heating flue gas flow regulating valve; 28 - temperature measurement; 29 - gasified tar on-off valve; 30 - gasified tar flow regulating valve; 31 - gasified tar flow passage; 32 - primary flow pipe; 33 - nitrogen pressure gauge; 34 - nitrogen flow control valve; 35 - nitrogen pressure control valve; 36 - secondary flow pipe; 37 - acceleration pipe; 38 - deceleration pipe; 39 - flow fan; 40 - electric regulating valve; 41 - pressure gauge; 42 - burner; 43 - manual on-off valve; 44 - pneumatic quick-closing valve 1; 45 - pneumatic quick-closing valve 2; 46 - pneumatic quick-closing valve 3; 48 - air distribution fan; 49 - liquefied gas inlet; 50 - gas boiler; 51 - furnace; 52 - steam heat exchange water pipe; 53 - steam drum; 54 - liquefied gas air distribution inlet; 55 - valve; 56 - transverse expansion joint; 57 - longitudinal expansion joint; 58 - regulating valve; 59 - vent pipe. DETAILED DESCRIPTION

[0027] The following description is merely intended for the purpose of revealing the present application so that those skilled in the art can implement the present application. The examples in the following description are only for example, and those skilled in the art can think of other obvious modifications. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other solutions without departing from the spirit and scope of the present application.

[0028]

Example 1

[0029] The garbage gasification tar re-gasification incineration utilization device is used for re-gasification of garbage gasification tar. Figure 1 、 Figure 2 The above substances enter the storage bin 6 through the feed inlet 1.

[0030] The heating device 7 is arranged outside the storage bin 6, and the heat source of the heating device 7 mainly comes from the hot water (65-70℃) at the condensed water outlet 13. The temperature of the storage bin 6 is mainly 40-65℃, so that the substances in the storage bin 6 have certain flowability and transportability.

[0031] The top of the storage bin 6 is provided with a stirring device 2 to stir the material in the storage bin 6, so that the material is more uniform.

[0032] The bottom of the storage bin 6 is provided with an arch breaking device 3 and a feeding screw 4, which can timely send the material in the upper part into the cooking container 18. At the same time, in order to avoid the entry of air during the addition of the material and maintain the pressure balance inside the system, the top of the storage bin 6 is also provided with a nitrogen seal 5, and the source of the nitrogen seal 5 mainly comes from the nitrogen storage tank of the nitrogen generator.

[0033] As shown in Figure 1 , Figure 2 , the inside of the cooking container 18 is provided with a low material level 20 and a high material level 21 to control the amount of stored material inside, and the steam heating coil 12 provides heating for the cooking container 18 to heat the material inside to 80-120℃. When the temperature of the material inside the cooking container 18 exceeds 90℃, the material has good fluidity, and at this time the state of the material is mainly liquid.

[0034] The heat source of the steam heating coil 12 comes from the steam of the steam input pipeline 11, and the steam flow is adjusted by the steam flow regulating valve 22 in cooperation with the temperature measuring meter 19. The condensed steam is discharged through the condensed water output port 13 and further enters the heating device 7 for heating.

[0035] When working, the stirring device 10 is continuously stirred to ensure that the material inside the cooking container 18 does not clump and is homogeneous.

[0036] The precipitated solid slag is periodically discharged from the solid slag output port 15, and the discharged solid slag can be directly introduced into a gasification furnace for further use and disposal.

[0037] The liquefied liquid tar with good fluidity is discharged from the liquefied tar output port 14 and introduced into the next process.

[0038] When working, the on-off valve 16 is first in a closed state, and the stirring device 10 is continuously stirred. When the material reaches the high material level 21, the feeding is stopped. The steam from the steam input pipeline 11 continuously heats the material inside the cooking container 18. When the temperature measuring meter 19 monitors that the temperature reaches the dischargeable temperature, the on-off valve 16 is opened to gradually release the liquefied tar inside the cooking container 18, and the discharge flow is adjusted by the flow control valve 17. The material is discharged to the low material level 20 at most, and the preliminary liquefaction of the material is completed, and the next process is entered.

[0039] As shown in Figure 1 , Figure 3 , the liquefied tar is automatically adjusted in the amount of injection by the flow control valve 17, and is introduced into the injection device 24 under the pressurization of the pressurizing pump 23, so that the liquefied tar is uniformly injected into the heat exchanger 25, and Figure 5The heat exchanger 25 includes multiple sets of heating gas channels 25a and liquefied tar injection and gasification channels 25b. The liquefied tar injection and gasification channel 25b is the main channel for liquefied tar gasification. The heating flue gas in the heating gas channel 25a mainly comes from the heating flue gas pipe 26. The flue gas can be adjusted by the heating flue gas flow regulating valve 27 to regulate the corresponding heating flow rate.

[0040] After being heated by heat exchanger 25, the liquefied tar is converted into a gaseous state. The temperature of the gasified tar is 350℃~400℃. The corresponding working temperature is obtained by adjusting the heating flue gas flow regulating valve 27 through temperature measurement 28. A primary diversion pipe 32 is set on the gasified tar flow pipe 31 for primary diversion. The diversion gas is mainly nitrogen, which comes from the nitrogen generator storage tank. Its working pressure and flow rate are mainly adjusted by nitrogen pressure measuring gauge 33, nitrogen flow control valve 34, and nitrogen pressure control valve 35. After diversion, a negative pressure zone will be formed in zone B. The high-temperature gas (350℃~500℃) introduced from the gasifier is accelerated at the secondary diversion pipe 36. The gas velocity after acceleration is greater than 35m / s. The accelerated gas will cause a large negative pressure zone to be formed in zone C.

[0041] Through two diversions, the gasified tar can be smoothly introduced into the high-temperature gas delivery pipe, and after being decelerated by the airflow deceleration mechanism, such as the deceleration pipe 38 with a variable diameter, it can be fully mixed. The diversion fan 39 is preferably a Roots blower. In cooperation with the electric regulating valve 40 and the pressure gauge 41, the high-temperature gas and the gasified tar gas mixture can be kept at a certain pressure during this stage, preferably around 3000 Pa, which can provide the burner 42 with a stable high-temperature combustible gas flow and pressure.

[0042] The manual switch valve 43 is mainly used for maintenance. With the pneumatic quick-closing valve 1 44, pneumatic quick-closing valve 2 45, and pneumatic quick-closing valve 3 46, it can be used for equipment leak detection and venting before starting the machine. The venting pipe 59 is equipped with nitrogen purging to avoid the high-temperature gas re-ignition during the venting process, which may cause safety hazards.

[0043] like Figure 1 , Figure 4 The burner 42 is also equipped with an air distribution duct, which is divided into two parts: a high-temperature gas air distribution inlet 54 and a liquefied gas air distribution inlet 54. The required air enters after being heated by an air heater, and the air volume can be adjusted by a corresponding flow regulating valve or by controlling the frequency of the air distribution fan 48. The liquefied gas inlet 49 is used for ignition.

[0044] In the gas boiler 50, the burner 42 burns the high-temperature gas and tar gasification gas mixture, the furnace 51 is configured with refractory heat storage, and the furnace temperature during combustion is not less than 850 DEG C. The gasification high-temperature gas and the gasification tar can be fully combusted, the CO in the exhaust flue gas is less than 100 mg / Nm3, the steam heat exchange water pipe 52 mainly exchanges heat with the combustion flue gas, and the temperature of the flue gas after heat exchange is 320-350 DEG C. The flue gas after heat exchange is discharged through the chimney after subsequent purification equipment and energy utilization equipment; the generated steam enters the steam drum 53, and the steam drum 53 enters each utilization equipment.

[0045] The high-temperature flue gas in the gas boiler 50 can also be extracted through the heated flue gas pipeline 26 and used for heat exchange of the heat exchanger 25. The valve 55, the transverse expansion joint 56 and the longitudinal expansion joint 57 are arranged in the heat exchange process to adjust the flow, maintenance and solve the problem of thermal expansion. The heated flue gas flow regulating valve 27 and the regulating valve 58 can adjust the flow of the flue gas entering the water heat exchange and the heated tar flue gas. The two flue gases are finally collected and introduced into the subsequent process by the subsequent fan.

[0046] From this, the solid-state impurity-containing tar can be treated to realize purification and deslagging, liquefaction, gasification, mixing, high-temperature full combustion, waste heat utilization, super-clean emission and the like, and realize garbage gasification tar re-gasification incineration utilization.

[0047] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been demonstrated and explained in the embodiments, and the implementation of the utility model can be any deformation and modification without departing from the principle.

Claims

1. A waste gasification tar re-gasification incineration utilization device, characterized by: The device comprises a liquefaction module, a gasification module, a flow guiding module and a combustion module, the liquefaction module comprises a cooking container (18) and a liquefaction heating mechanism, the gasification module comprises a heat exchanger (25), the tar liquefied by the liquefaction module is converted into gas state after being heated by the heat exchanger (25), the flow guiding module comprises a flow guiding pipe for high-temperature fuel gas, the gasified tar and the high-temperature fuel gas enter the combustion module for combustion, and the combustion module has heat exchange with the liquefaction heating mechanism and the heat exchanger (25).

2. The waste gasification tar re-gasification incineration utilization apparatus according to claim 1, characterized by: The device further comprises a feeding module, the feeding module comprises a storage bin (6) and a heating device (7), the storage bin (6) is connected with the cooking container (18), the heating device (7) is used for heating the tar in the storage bin (6), and the heating device (7) has heat exchange with the liquefaction heating mechanism or the heat exchanger (25).

3. The waste gasification tar re-gasification incineration utilization apparatus according to claim 2, characterized by: The storage bin (6) and the cooking container (18) are both provided with stirring devices.

4. The waste gasification tar re-gasification incineration utilization apparatus according to claim 2 or 3, characterized by: A nitrogen seal (5) is arranged at a feeding opening (1) of the storage bin (6).

5. The waste gasification tar regasification and incineration utilization device according to any one of claims 1-3, characterized in that: The gasification module further comprises a pressurizing pump (23) and a spraying device (24), the pressurizing pump (23) and the spraying device (24) are connected with the cooking container (18), and the liquefied tar is sprayed to the heat exchanger (25) by the spraying device (24).

6. The apparatus according to any one of claims 1 to 3, wherein: the waste gasification tar is generated by a waste gasification plant. The flow guiding module comprises a primary flow guiding pipe (32) and a secondary flow guiding pipe (36), the secondary flow guiding pipe (36) is used for guiding the high-temperature fuel gas, and the primary flow guiding pipe (32) is guided by inert gas.

7. The waste gasification tar re-gasification incineration utilization apparatus according to claim 6, characterized by: The flow guiding module further comprises a speed reduction pipe (38), and the gasified tar is speed-reduced by the speed reduction pipe (38) after being guided twice.

8. The apparatus according to any one of claims 1 to 3, wherein: the apparatus is a waste gasification tar re-gasification incineration utilization apparatus. The combustion module comprises a fuel gas boiler (50), a steam heat exchange water pipe (52) and a steam drum (53), and the steam drum (53) stores the steam generated after heat exchange of the steam heat exchange water pipe (52).

9. The waste gasification tar re-gasification incineration utilization apparatus according to claim 8, characterized by: The liquefaction heating mechanism comprises a steam heating coil (12), and the steam heating coil (12) is connected with the steam drum (53).

10. The waste gasification tar re-gasification incineration utilization device according to claim 9, characterized by: The fuel gas boiler (50) is connected with the heat exchanger (25) through a heating flue gas pipe (26).

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