Energy-saving sludge carbonization equipment
By designing an energy-saving sludge equipment divided into organic biochemical sludge and oil-containing organic sludge furnaces, and using the high calorific value of oil-containing organic sludge for circulating heating, the problems of high energy consumption and high hazardous waste disposal costs in the existing technology are solved, and energy conservation and efficient sludge treatment are achieved.
Patent Information
- Application Number
- CN202323248024.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2033-11-30
AI Technical Summary
When dealing with organic, biochemical sludge and oil-containing organic sludge, it is difficult for existing sludge charcoding technology to make full use of the high calorific value of oil-containing organic sludge without affecting the properties of post-carbonization, resulting in high energy use and increased costs of hazardous waste disposal.
Design an energy-saving sludge charging equipment, including a hot air generator, feed device, a carbonization furnace heating chamber, a discharge device and a exhaust gas treatment device. The heating chamber of the carbonization furnace is divided into the organic biochemical sludge charging furnace chamber and an oil-containing organic sludge furnace chamber. The dry distillation gas generated by the oil-containing organic sludge is introduced into the hot air generator through the induction fan, and the carbonization furnace is circulated to heat the organic biochemical sludge and oil-containing organic sludge.
Energy savings during the charring of organic biochemical sludge and oil-containing organic sludge were achieved, and the use of natural gas or diesel was reduced, and the properties of sludge were affected after carbonization were avoided, and the cost of hazardous waste disposal was reduced. It was also able to deal with biomass materials of different high and low calorie values.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solid waste resource utilization, in particular to energy-saving sludge carbonization equipment. Background Art
[0002] Most of the wastewater treatment in petrochemical enterprises adopts the "activated sludge method". After the sewage treatment plant treats the sewage into clean water, a large amount of sludge remains in the plant. Since the remaining sludge contains a large number of organisms and organic matter, this sludge is called organic biochemical sludge. At the same time, the petrochemical industry also contains a lot of oily sewage. After sewage treatment, a lot of oily organic sludge will be produced. At present, the types of sludge in the petrochemical industry are mainly these two types, and the disposal volume is large. Therefore, how to dispose of these two types of sludge in terms of harmlessness and resource utilization is particularly critical.
[0003] Existing sludge drying technology can achieve volume reduction, but it still has some shortcomings in terms of harmlessness and resource utilization. Sludge carbonization technology can not only reduce sludge emissions, but also solidify the heavy metals in it, with the possibility of turning hazardous waste into general solid waste. At the same time, the carbonization product also has a high utilization value.
[0004] The heat of organic biochemical sludge is not high, while the calorific value of oil-containing organic sludge is high. In the carbonization process of pure organic biochemical sludge, a certain amount of heat needs to be added to completely carbonize it. However, there will be a large amount of excess heat in the carbonization process of pure oil-containing sludge, resulting in heat waste. The co-carbonization of organic biochemical sludge and oil-containing organic sludge can make full use of the combustible distillation gas generated during the carbonization of oil-containing organic sludge, make full use of the calorific value of oil-containing organic sludge, and reduce the use of carbonization energy. However, if the two are simply mixed into the same carbonization furnace, although energy is saved, it will affect the properties of the carbonized sludge and the subsequent sludge treatment. Generally, organic biochemical sludge can be treated as general solid waste after carbonization, while oil-containing organic sludge is still hazardous waste after carbonization. If it is simply mixed and carbonized, the final sludge is hazardous waste, which increases the cost of sludge disposal. Therefore, it is worth exploring how organic biochemical sludge and oil-containing organic sludge can not affect the properties of the carbonized sludge of both sludges during the carbonization process, and can resource-utilize the heat of oil-containing organic sludge.
[0005] In view of the above-mentioned defects, the inventor of the present invention finally obtained the present invention after a long period of research and practice. Utility Model Content
[0006] In order to solve the above problems, the utility model provides an energy-saving sludge carbonization equipment, including a hot air generator, a feeding device, a carbonization furnace heating chamber, a discharging device and an exhaust gas treatment device, wherein the carbonization furnace heating chamber is provided with an organic biochemical sludge carbonization furnace chamber and an oil-containing organic sludge carbonization furnace chamber which can rotate relative to the carbonization furnace heating chamber, and the organic biochemical sludge carbonization furnace chamber and the oil-containing organic sludge carbonization furnace chamber are independent in cavity body, and are respectively provided with an independent feeding device and a discharging device; the carbonization furnace chamber is connected with a hot air generator, and heats the organic biochemical sludge carbonization furnace chamber and the oil-containing organic sludge carbonization furnace chamber at the same time; the exhaust gases of the organic biochemical sludge carbonization furnace chamber and the oil-containing organic sludge carbonization furnace chamber are respectively discharged and merged into the same exhaust gas treatment device for disposal; the organic biochemical sludge carbonization furnace chamber and / or the oil-containing organic sludge carbonization furnace chamber are also connected with an induced draft fan, which is connected to the hot air generator through a pipeline.
[0007] In this scheme, organic biochemical sludge and oil-containing organic sludge are heated using the same carbonization furnace heating chamber, and independent disposal furnace chambers are respectively set in the carbonization furnace heating chamber. The furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace are independently set, so that the carbonized waste residues of organic biochemical sludge and oil-containing organic sludge can be disposed separately, reducing the emission of hazardous waste. The high calorific value dry distillation gas generated by the oil-containing organic sludge during anaerobic carbonization is introduced into the heat generator through the induced draft fan, and circulated to the carbonization furnace heating chamber through the heat generator, so that the heat of the high calorific value dry distillation gas of the oil-containing organic sludge can heat the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace at the same time, realizing the sharing of the high calorific value heat of the oil-containing organic sludge and saving the energy required for carbonization. The furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace can rotate relative to the carbonization furnace heating chamber, so that the sludge can be evenly heated.
[0008] Preferably, the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity body of the oil-containing organic sludge carbonization furnace are in the form of a horizontal rotating body, and an air guide plate is arranged in the furnace cavity.
[0009] The horizontal rotating furnace body and the setting of the guide plate inside the furnace cavity make the heating more uniform and the sludge carbonization effect better. When the furnace body rotates, the sludge in the furnace cavity of the organic biochemical sludge carbonization furnace and the oil-containing organic sludge carbonization furnace continuously emits heat, and the sludge also rotates forward until it reaches the discharge screw conveyor. The rotation speed of the furnace cavity of the organic biochemical sludge carbonization furnace and the oil-containing organic sludge carbonization furnace is determined according to the properties of the material.
[0010] Preferably, the hot air generator includes an igniter and a combustion chamber, the air outlet end above the combustion chamber is connected to the heating chamber of the carbonization furnace through a flange, and the inlet end is connected to the external combustion heat source and the air outlet of the carbonization furnace induced draft fan. The combustion chamber burns the external fuel only in the carbonization start-up stage. When the temperature in the furnace cavity of the organic biochemical sludge carbonization furnace and the oil-containing organic sludge carbonization furnace reaches the set temperature of 600-700°C, the heating in the combustion chamber can be stopped, and the hot air generated in the oil-containing organic sludge carbonization furnace can be used for circulating heating.
[0011] Preferably, the feeding device includes an organic biochemical sludge feeding screw device and an oil-containing organic sludge feeding screw device, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace; the discharging output device includes two sets of independent spiral discharging devices, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace.
[0012] Preferably, the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace are also respectively provided with a driving device, and the driving device includes a driving motor and a gear, and the gear is fixed on the outer circumference of the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace. The driving motor drives the gear to drive the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace to rotate respectively.
[0013] Preferably, the exhaust gas treatment device includes a water-cooled cyclone dust removal device, a water-cooled heat exchanger and a smoke exhaust fan which are connected in sequence, the air inlet of the water-cooled cyclone dust removal device is connected to the air outlet of the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace through pipes respectively, and the air outlet of the smoke exhaust fan is connected to the air inlet of the alkali washing tower.
[0014] Preferably, the hot air generator uses diesel or natural gas as the initial heat source.
[0015] The beneficial effects of the utility model are as follows:
[0016] The utility model transports the organic biochemical sludge and the oily organic sludge to different treatment furnace chambers in the same carbonization furnace heating chamber. The large amount of dry distillation gas generated during carbonization is introduced into the combustion chamber through the induced draft fan and circulated into the carbonization furnace heating chamber, so that the heat generated by the organic biochemical sludge and the oily organic sludge can be shared, reducing the use of natural gas or diesel, and solving the problem of high carbonization energy consumption; the organic biochemical sludge and the oily organic sludge are carbonized separately to eliminate the secondary pollution formed after the two are mixed, and do not affect the subsequent sludge treatment, thereby avoiding the mixing of hazardous waste and general solid waste. At the same time, it can also process biomass materials or organic solid wastes with different high and low calorific values, which is conducive to the sharing of calorific value. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a schematic structural diagram of the tail gas treatment device of the utility model.
[0019] Description of reference numerals:
[0020] 1. Hot air generator; 2. Feeding device; 3. Carbonization furnace heating chamber; 4. Discharging device; 5. Exhaust gas treatment device; 51. Water-cooled cyclone dust removal device; 52. Water-cooled heat exchanger; 53. Smoke exhaust fan. DETAILED DESCRIPTION
[0021] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0022] like Figure 1 As shown, the embodiment of the utility model provides an energy-saving sludge carbonization device, including a hot air generator 1, a feeding device 2, a carbonization furnace heating chamber 3, a discharging device 4 and an exhaust gas treatment device 5, wherein the carbonization furnace heating chamber 3 is provided with an organic biochemical sludge carbonization furnace chamber and an oil-containing organic sludge carbonization furnace chamber that can rotate relative to the carbonization furnace heating chamber 3, and the organic biochemical sludge carbonization furnace chamber and the oil-containing organic sludge carbonization furnace chamber chamber are independent, and are respectively equipped with independent feeding devices 2. and a discharging device 4; the carbonization furnace heating chamber 3 is connected to a hot air generator 1, which heats the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace at the same time; the tail gases of the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace are discharged separately and then merged into the same tail gas treatment device 5 for disposal; the furnace chamber of the organic biochemical sludge carbonization furnace and / or the furnace chamber of the oil-containing organic sludge carbonization furnace are also connected to an induced draft fan, which is connected to the hot air generator 1 through a pipeline.
[0023] like Figure 2 As shown, the exhaust gas treatment device 5 includes a water-cooled cyclone dust removal device 51, a water-cooled heat exchanger 52 and a smoke exhaust fan 53. The air inlet of the water-cooled cyclone dust removal device 51 is connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the air outlet of the furnace cavity of the oil-containing organic sludge carbonization furnace through a pipeline. The exhaust gas treatment device 5 is arranged in sequence according to the water-cooled cyclone dust removal device 51, the water-cooled heat exchanger 52, and the smoke exhaust fan 53. The treated exhaust gas then enters the alkali washing tower for treatment.
[0024] The feeding device 2 includes an organic biochemical sludge feeding screw device and an oil-containing organic sludge feeding screw device, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace; the discharging output device includes two sets of water-cooling screw devices, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace. The discharging device 4 includes two pairs of water-cooling screw devices, which are respectively connected to the discharge port of the carbonization furnace. The materials discharged from the carbonization furnace are transported to the corresponding discharge ton bags after passing through the water-cooling screw devices.
[0025] The feeding device 2 is provided with a propulsion device, which includes a screw shaft, propulsion blades, and a propeller. The screw shaft is horizontally arranged in the propulsion device, the propulsion blades are connected to the screw shaft, and the end of the screw shaft is connected to the propeller.
[0026] The hot air generator 1 includes an igniter and a combustion chamber. The air outlet end above the combustion chamber is connected to the heating chamber 3 of the carbonization furnace through a flange, and the inlet end is connected to an external combustion heat source and an air outlet of the induced draft fan of the carbonization furnace.
[0027] The hot air generator 1 uses diesel or natural gas as the initial heat source to preheat the carbonization furnace. The dry distillation gas recovered during the carbonization process is used as a recovered heat source for recycling to maintain the high temperature in the furnace and heat the rotatable furnace chamber.
[0028] The furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace are also respectively provided with a driving device, and the driving device includes a driving motor and a gear. The gear is fixed on the outer circumference of the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace. The driving motor drives the gear to drive the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace to rotate respectively.
[0029] In the utility model, the furnace chamber of the organic biochemical sludge carbonization furnace and the main body of the oil-containing organic sludge carbonization furnace are in the form of a horizontal rotating body, and an indirect heating method is adopted to transport the organic biochemical sludge and the oil-containing organic sludge to the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace respectively for rotational heating. The two materials in the furnace chamber are thermally decomposed in an oxygen-free state to produce a large amount of dry distillation gas. The dry distillation gas is introduced into the combustion chamber in the hot air generator 1 through the induced draft fan for secondary combustion, and the heat generated can continue to provide heat for the carbonization furnace.
[0030] The utility model utilizes organic biochemical sludge and oil-containing organic sludge to be heated and decomposed in the furnace cavity to generate a large amount of dry distillation gas, which enters the heating chamber 3 of the carbonization furnace after secondary circulation, thereby realizing the energy sharing of the high calorific value of the oil-containing organic sludge and solving the problem of high carbonization energy consumption. In addition, the separate carbonization of organic biochemical sludge and oil-containing organic sludge can also eliminate the secondary pollution caused by the mixing of the two, and will not affect the subsequent sludge treatment.
[0031] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An energy-saving sludge carbonization device, comprising a hot air generator (1), a feeding device (2), a carbonization furnace heating chamber (3), a discharging device (4) and an exhaust gas treatment device (5), characterized in that: The carbonization furnace heating chamber (3) is provided with an organic biochemical sludge carbonization furnace chamber and an oil-containing organic sludge carbonization furnace chamber which are capable of rotating relative to the carbonization furnace heating chamber. The organic biochemical sludge carbonization furnace chamber and the oil-containing organic sludge carbonization furnace chamber are independent and are respectively provided with independent feeding devices (2) and discharging devices (4); The carbonization furnace heating chamber (3) is connected to a hot air generator (1) to heat the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oil-containing organic sludge carbonization furnace at the same time; The tail gases from the furnace chamber of the organic biochemical sludge carbonization furnace and the furnace chamber of the oily organic sludge carbonization furnace are respectively discharged and then merged into the same tail gas treatment device (5) for treatment; The furnace chamber of the organic biochemical sludge carbonization furnace and / or the furnace chamber of the oily organic sludge carbonization furnace is also connected to an induced draft fan, and the induced draft fan is connected to the hot air generator (1) through a pipeline.
2. The energy-saving sludge carbonization equipment according to claim 1, characterized in that: The furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity body of the oil-containing organic sludge carbonization furnace are in the form of a horizontal rotation, and air guide plates are arranged in the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace.
3. The energy-saving sludge carbonization equipment according to claim 1, characterized in that: The hot air generator (1) comprises an igniter and a combustion chamber, wherein the air outlet end above the combustion chamber is connected to the carbonization furnace heating chamber (3) via a flange, and the inlet end is connected to an external combustion heat source and an air outlet of the carbonization furnace induced draft fan.
4. The energy-saving sludge carbonization equipment according to claim 1, characterized in that: The feeding device (2) comprises an organic biochemical sludge feeding screw device and an oil-containing organic sludge feeding screw device, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace; the discharging device comprises two sets of independent spiral discharging devices, which are respectively connected to the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace.
5. The energy-saving sludge carbonization equipment according to claim 2, characterized in that: The furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace are also respectively provided with a driving device, and the driving device includes a driving motor and a gear. The gear is fixed on the outer circumference of the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace. The driving motor drives the gear to drive the furnace cavity of the organic biochemical sludge carbonization furnace and the furnace cavity of the oil-containing organic sludge carbonization furnace to rotate respectively.
6. The energy-saving sludge carbonization equipment according to claim 1, characterized in that: The tail gas treatment device (5) comprises a water-cooled cyclone dust removal device (51), a water-cooled heat exchanger (52) and a smoke exhaust fan (53) which are sequentially connected and arranged, the air inlet of the water-cooled cyclone dust removal device (51) being connected to the furnace chamber of the organic biochemical sludge carbonization furnace and the air outlet of the furnace chamber of the oil-containing organic sludge carbonization furnace respectively through pipelines, and the air outlet of the smoke exhaust fan (53) being connected to the air inlet of the alkali washing tower.
7. The energy-saving sludge carbonization equipment according to claim 3, characterized in that: The hot air generator (1) uses diesel or natural gas as an initial heat source.