A kind of oily sludge pyrolysis carbonization smoke processing system
Technical field
The present invention relates to a kind of oily sludge pyrolysis carbonization smoke processing system, particularly relate to the equipment that a kind of high-temperature flue gas that oily sludge is produced in mummification and pyrolysis charring process processes.
Background technology
According to statistics, the generation amount of the oil recovery business oily sludge of China is more than million tons. Containing bulk petroleum hydro carbons in oily sludge, if not utilizing, not only wasting petroleum resources, and because moisture content is higher, sludge volume is relatively larger, it is necessary to takies large-area soil and carries out storing or filling, easily to environment. Treatment technology for oily sludge has burning, biological treatment and pyrolysis etc. both at home and abroad. The pyrolysis charring of oily sludge is adopted by industry gradually as the comparatively effective resource treatment technique of one.
Application number disclosed in 29 days July in 2015 be 201520099383.2 innovation and creation disclose a kind of smoke processing system, it utilizes treating column, spray thrower and oil scraping mechanism etc. to complete three phase separation, solve pyrolysis gas in entering the process entering pipeline after condensation process, be susceptible to the problem of blocking, and utilize oil scraping mechanism to reclaim mink cell focus and light oil. But, in use finding, the treating column inwall of these innovation and creation easily occurs facing dew point corrosion problem, and equipment failure rate is high. So-called dewpoint corrosion refers to owing to element sulphur generates SO2, SO3 when burning, when the hull-skin temperature of heat-transfer surface is lower than flue gas dew point temperature, will form sulfuric acid mist dewdrop, cause that heat-transfer surface corrodes on heat-transfer surface; In use also finding, these innovation and creation are not thorough to the collection of dust and oil point, blockage problem still can occur, the properly functioning generation harmful effect to equipment.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art part, the problem overcoming dew point corrosion, and dust and oil point are fully reclaimed, thoroughly solve blockage problem, the operating making equipment is more smoothly.
A kind of oily sludge pyrolysis carbonization smoke processing system, including coagulation tower, cyclone dust extractor, two stage treatment tower, oil water separator and gas collector, described cyclone dust extractor is connected to by gaseous mixture pipeline after coagulation tower, described coagulation tower includes Wai Ta and Nei Ta, described outer tower is tubular, described interior tower is a cartridge type partition wall, and described Nei Ta is coaxial with outer tower; It is provided with spiral septum between described tubular partition wall outside and outer tower; Smoke feed tube opening is arranged on described outer tower, is positioned under the spiral septum bottom; Downwards, described gaseous mixture pipe head is inside interior tower and is positioned at Nei Ta bottom for the bending of described gaseous mixture pipe head; At least provided with a shower nozzle above described interior tower; Described cyclone dust extractor outer surface is provided with and adds hot jacket, described add to be provided with between hot jacket and cyclone dust extractor add hot channel, described heating pipe head is connected with smoke feed pipe, and heating pipe outlet is connected with smoke feed pipe and is positioned at heating pipe head and is connected with smoke feed pipe after contact; Being provided with horizontal comb in described two stage treatment tower, described horizontal comb is provided with packing layer, at least provided with a shower nozzle in described two stage treatment tower, described packing layer upper end is positioned under described shower nozzle; After described two stage treatment tower is connected to cyclone dust extractor by air shooter, described oil water separator is arranged on immediately below two stage treatment tower; Described oil water separator lower end is provided with expansion chamber, and described expansion chamber bottom is provided with drainage channel, and described drainage channel is connected on the shower nozzle in two stage treatment tower.
As preferably, the outer wall of described oil water separator and described two stage treatment tower is tubular and is coaxially disposed, and the outlet of described air shooter is arranged between two stage treatment tower and oil water separator;Described expansion chamber is that inverted cone is connected with the outer wall of oil water separator, described expansion chamber axis and oil water separator dead in line, and the inside outer wall of described oil water separator is provided with sensor; Described oil water separator includes tapered inlet, Vertical Channel, conical outlet and conical baffle, and described tapered inlet is arranged on directly over conical outlet, and described Vertical Channel upper end connects with tapered inlet, and described Vertical Channel lower end connects with conical outlet; Described conical baffle lower end is connected to described inside outer wall, and conical baffle upper end is between tapered inlet lower end and conical baffle lower end; Ring exit is formed between described conical baffle and described Vertical Channel, described outer wall is provided with light oil outlet and mink cell focus outlet, described light oil exports between described conical baffle top and bottom, and described mink cell focus exports between conical baffle lower end and expansion chamber upper end.
As preferably, being provided with rotation element in described conical outlet, described rotation element is disc, the axis of described rotation element and the dead in line of Vertical Channel; Described rotation element is between conical outlet top and bottom.
As preferably, being provided with discharge duct in described Vertical Channel, described discharge duct upper end is that circular arc bends down; Described discharge duct upper end open is between tapered inlet top and bottom, and described discharge duct lower end is in Vertical Channel lower end and rotates between element upper end.
As preferably, described sensor can be pressure transducer, described pressure transducer at least two, and two pressure transducers are between conical baffle lower end and expansion chamber upper end; Two pressure transducers are vertically arranged up and down, lay respectively on the upper end of mink cell focus outlet and under the lower end of mink cell focus outlet.
As preferably, described gaseous mixture pipeline partial outer face between coagulation tower and cyclone dust extractor is provided with and adds hot jacket, described add to be provided with between hot jacket and gaseous mixture pipeline add hot channel, described heating pipe head is connected with smoke feed pipe, and heating pipe outlet is connected with smoke feed pipe and is positioned at heating pipe head and is connected with smoke feed pipe after contact.
As preferably, described two stage treatment tower top end offers gas passage mouth, and described gas passage mouth is connected to gas passage, is provided with condensation plate in described gas passage, described condensation plate is a kind of fold-line-shaped plate with holes, and described condensation plate is positioned at gas passage mouth place.
As preferably, described ring exit and described Vertical Channel coaxial line; The dead in line of the axis of described Vertical Channel and described oil water separator.
Beneficial effects of the present invention:
(1) present invention utilizes the special construction of oil water separator, make mink cell focus and light oil autologous density can be relied on to make mink cell focus and light oil be able to separate collection in the oil-water separation stage, avoid increasing subsequent technique and man-hour the mink cell focus to collecting and light oil be easily separated, decrease man-hour, reduce cost, improve the utilization ratio of equipment, and spray treating column, oil water separator, expansion chamber and conical baffle coaxial line, it is ensured that stability when spray treating column and oil water separator operating.
(2) oil water separator of the present invention conical outlet in arrange rotate element the liquid in oil water separator can be stirred, while acceleration mink cell focus separates with light oil, rotate when element rotates and may also reach up the unforeseeable effect of such a:, when rotating element rotation, rotate member upper and can form low-pressure area, facilitate the liquid in Vertical Channel to circulate downwards; Additionally, rotate and can also apply pressure to rotating element lower portions liquid when element rotates, force liquid below conical outlet to flow to oil water separator surrounding so that it is in mink cell focus and light oil float up, it is to avoid part mink cell focus and light oil are trapped near conical outlet to be difficult to discharge.
(3) it is provided with discharge duct in the Vertical Channel of the present invention, it is to avoid build-up of air in conical outlet, hinders downward liquid flow in Vertical Channel.
(4) the coagulation tower of the present invention is divided into Wai Ta and Nei Ta, high-temperature flue gas from smoke feed pipe is heated by internal tower before tower in the space entrance between inner tower and outside tower, make interior inner wall of tower temperature higher than dew point temperature, prevent dew point corrosion phenomenon, meanwhile, the temperature of high-temperature flue gas is also necessarily reduced, it is possible to reduce the moisture that after contacting with the water from shower nozzle, gas carries.
(5) present invention utilizes the heat of high-temperature flue gas self that the gaseous mixture pipeline between cyclone dust extractor and cyclone dust extractor and coagulation tower is heated, make the surface temperature of heat-transfer surface higher than flue gas dew point temperature, it is to avoid the generation of leak source corrosion phenomenon.
(6) while the present invention utilizes inside and outside coagulation tower the spiral septum between tower and Nei Ta that the internal tower of high-temperature flue gas is heated, air-flow rises twist, large granular impurity in high-temperature flue gas is made to be thrown out of air-flow because centrifugal force is big and decline along spiral septum, and, spiral septum also makes high-temperature flue gas and interior tower contacts side surfaces time elongated, and the heating of internal tower is more abundant.
(7) present invention prevents what dew point corrosion was taked its heat of heating measures from high-temperature flue gas itself, energy-conserving and environment-protective.
(8) present invention has carried out twice spray process by the shower nozzle in coagulation tower and two stage treatment tower is actual, carry out again independent twice dust removal process further through screw type dividing plate and cyclone dust extractor reality, and sprayed process itself and have the effect of dedusting. So, the present invention is actual has carried out twice spray, four dedustings, more thoroughly removes the mink cell focus in flue gas and light oil and dust, and dust very easily adheres to a large amount of mink cell focus and light oil composition, four dedustings also correspond to the mink cell focus and the light oil composition that remove in flue gas further.
(9) present invention utilizes the internal tower of temperature of flue gas itself, cyclone dust extractor and blender pipeline to be heated an also unforeseeable advantage: after heating, the temperature of flue gas itself decreases, after temperature reduces, gas viscosity reduces, decrease in viscosity can improve the sedimentation velocity of cyclone dust extractor, improves the efficiency of dust collection of cyclone dust extractor.
(10) packing layer that the present invention adopts makes the gas of rising longer with the time of contact of the ejecting liquid of decline, contact more abundant, in gas, the condensation process of mink cell focus and light oil composition is more abundant, and the separation of mink cell focus and light oil composition is more thorough.
(11) high-temperature flue gas is through the process of coagulation tower of the present invention and cyclone dust extractor, in gas, solid content is few, therefore the moisture in expansion chamber can be circulated utilization, avoid often the water in expansion chamber being carried out purified treatment, while having saved water resource, decrease cost; Simultaneously containing part mink cell focus and light oil in recirculated water, this part mink cell focus and light oil with water when packing layer declines, stickiness by oil itself can reduce the speed that liquid declines in packing layer, thus increasing the time of contact of liquid and uprising gas, make contact more abundant, in gas, the condensation process of mink cell focus and light oil composition is more abundant, and mink cell focus and lightweight oil separating are more thorough; It addition, recirculated water reduces to a certain extent the growing amount of steam containing part mink cell focus and light oil.
Accompanying drawing explanation
For clearer explanation technical scheme, below the accompanying drawing used required during embodiment is described is briefly described, apparently, drawings discussed below is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is oily sludge pyrolysis carbonization smoke processing system overall schematic.
Fig. 2 is the partial enlarged drawing of location A.
Fig. 3 is coagulation tower schematic diagram.
Fig. 4 is cyclone dust extractor schematic diagram.
Fig. 5 is spiral septum schematic diagram.
Fig. 6 is two stage treatment tower and oil water separator schematic diagram.
Label declaration:
1. coagulation tower, 10. cesspool, 11. gaseous mixture pipeline, 12. outer tower, 13. interior tower, 14. smoke feed pipe, 15. spiral septum, 2. cyclone dust extractor, 20. add hot jacket, 21. air shooter, 22. add hot channel, 3. two stage treatment tower, 30. outer wall, 31. horizontal comb, 32. packing layer, 33. shower nozzle, 34. gas passage mouth, 35. gas passage, 36. condensation plate, 4. oil water separator, 4a. expansion chamber, 4b. sensor, 41. tapered inlet, 42. Vertical Channel, 43. conical outlet, 44. conical baffle, 45. ring exit, 46. light oil exports, 47. mink cell focus exports, 48. drainage channel, 49. discharge duct, 410. rotation element, 5. gas collector.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is illustrated clearly and completely.
Embodiment
Fig. 1 is oily sludge pyrolysis carbonization smoke processing system overall schematic, Fig. 2 to be the partial enlarged drawing of location A, Fig. 3 be coagulation tower schematic diagram, Fig. 4 are cyclone dust extractor schematic diagram, Fig. 5 be spiral septum schematic diagram, Fig. 6 is two stage treatment tower and oil water separator schematic diagram. As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the present embodiment provides a kind of oily sludge pyrolysis carbonization smoke processing system, including coagulation tower 1, cyclone dust extractor 2, two stage treatment tower 3, oil water separator 4 and gas collector 5; After described cyclone dust extractor 2 is connected to coagulation tower 1 by gaseous mixture pipeline 11, after described two stage treatment tower 3 is connected to cyclone dust extractor 2 by air shooter 21, described oil water separator 4 is arranged on immediately below two stage treatment tower 3; The outer wall 30 of described oil water separator 4 and described two stage treatment tower 3 for tubular and is coaxially disposed, and the outlet of described air shooter 21 is arranged between two stage treatment tower 3 and oil water separator 4; Described oil water separator 4 lower end is provided with expansion chamber 4a, described expansion chamber 4a is that inverted cone is connected with the outer wall 30 of oil water separator 4, described expansion chamber 4a axis and oil water separator 4 dead in line, be provided with sensor 4b inside the outer wall 30 of described oil water separator 4; Described oil water separator 4 includes tapered inlet 41, Vertical Channel 42, conical outlet 43 and conical baffle 44, described tapered inlet 41 is arranged on directly over conical outlet 43, described Vertical Channel 42 upper end connects with tapered inlet 41, and Vertical Channel 42 lower end connects with conical outlet 43; Described conical baffle 44 lower end is connected to inside described outer wall 30, and conical baffle 44 upper end is between tapered inlet 41 lower end and conical baffle 44 lower end; Ring exit 45 is formed between described conical baffle 44 and described Vertical Channel 42, light oil outlet 46 and mink cell focus outlet 47 it is provided with on inside described outer wall 30, the outlet 46 of described light oil is between described conical baffle 44 top and bottom, and the outlet 47 of described mink cell focus is between conical baffle 44 lower end and expansion chamber 4a upper end; Described expansion chamber bottom is provided with drainage channel 48, and described drainage channel 48 is connected on the shower nozzle 33 in two stage treatment tower 3; Being provided with rotation element 410 in described conical outlet 43, rotation element is disc, and axis overlaps with Vertical Channel 42;Described rotation element 410 is between conical outlet 43 top and bottom; Being provided with discharge duct 49 in described Vertical Channel 42, described discharge duct 49 upper end is that circular arc bends down; Described discharge duct 49 upper end open is between tapered inlet 41 top and bottom, and described discharge duct 49 lower end is in Vertical Channel 42 lower end and rotates between element 410 upper end; Described sensor 4b can be pressure transducer, described pressure transducer at least two, and two pressure transducers are between conical baffle 44 lower end and expansion chamber 4a upper end; Two pressure transducers are vertically arranged up and down, lay respectively on the upper end of mink cell focus outlet 47 and under the lower end of mink cell focus outlet 47; Described coagulation tower 1 includes outer tower 12 and Nei Ta 13, and described outer tower 12 is tubular, and described interior tower 13 is a cartridge type partition wall, and described interior tower 13 is coaxial with outer tower 12; Being provided with spiral septum 15 between described tubular partition wall outside and outer tower 12, described spiral septum 15 forms the passage that spiral type rises between interior tower 13 and outer tower 12, it is simple to high-temperature flue gas is heated with the internal tower 13 of spiral type; Smoke feed pipe 14 opening is arranged on described outer tower 12, is positioned under spiral septum 15 bottom; Downwards, described gaseous mixture pipeline 11 entrance point is inside interior tower 13 and is positioned at tower 13 bottom for the bending of described gaseous mixture pipeline 11 entrance point; At least provided with a shower nozzle 33 above described interior tower 13; Described cyclone dust extractor 2 outer surface is provided with and adds hot jacket 20, described add to be provided with between hot jacket 20 and cyclone dust extractor 2 add hot channel 22, described hot channel 22 entrance point that adds is connected with smoke feed pipe 14, adds hot channel 22 port of export and is connected with smoke feed pipe 14 and is positioned at and add hot channel 22 entrance point and be connected with smoke feed pipe 14 after contact; The described gaseous mixture pipeline 11 partial outer face between coagulation tower 1 and cyclone dust extractor 2 is provided with and adds hot jacket 20, described add to be provided with between hot jacket 20 and gaseous mixture pipeline 11 add hot channel 22, described hot channel 22 entrance point that adds is connected with smoke feed pipe 14, and heating pipe outlet is connected with smoke feed pipe 14 and is positioned at heating pipe head and is connected with smoke feed pipe 14 after contact; Being provided with horizontal comb 31 in described two stage treatment tower 3, described horizontal comb 31 is arranged on inside two stage treatment tower 3 outer wall 30, is positioned on air shooter 21; At least provided with a shower nozzle 33 in described two stage treatment tower 3, described shower nozzle 33 is arranged on described horizontal comb 31 top; Being provided with packing layer 32 on described horizontal comb 31, described packing layer 32 upper end is positioned under described shower nozzle 33; Described two stage treatment tower 3 top offers gas passage mouth 34, described gas passage mouth 34 is connected to gas passage 35, being provided with condensation plate 36 in described gas passage 35, described condensation plate 36 is a kind of fold-line-shaped plate with holes, and described condensation plate 36 is positioned at gas passage mouth 34 place; Described ring exit 45 and described Vertical Channel 42 coaxial line; Described Vertical Channel 42 and the dead in line of described oil water separator 4; Described mink cell focus outlet 47 and light oil export in 46 pipelines and are provided with valve; The valve liquid level in order to regulate in oil water separator it is provided with in described drainage channel 48.
The work process of the present invention: the high-temperature flue gas that oily sludge produces in mummification and pyrolysis charring process first enters from smoke feed pipe and adds hot channel, is heated with smoke contacts face in cyclone dust extractor and blender pipeline, it is prevented that dew point corrosion. Then, high-temperature flue gas enters coagulation tower from smoke feed pipe, the spirality channel formed first with spiral septum in coagulation tower carries out dedusting and internal tower is heated, make interior tower internal surface temperature higher than flue gas dew point temperature, to avoid dew point corrosion, then spraying, the impurity that dedusting stays enters cesspool 10 by the passage of Wai Ta lower end, and the liquid that spray stays enters cesspool 10 from the passage of Nei Ta lower end;From coagulation tower, gas out carries out final dusting through cyclone dust extractor, removes the dust granules carried in gas further, the solid particle stayed from cyclone dust extractor enters cesspool, from cyclone dust extractor, gas out processes through the spray of two stage treatment tower that to flow to gas collector etc. from two stage treatment tower top end passage to be used, from cyclone dust extractor, gas out is before entering gas collector, through condensation plate to remove the liquid carried in gas as far as possible, specifically, flue gas condensation portion can not pass through condensation plate, the condensation plate that smoke contacts temperature containing a large amount of water vapour is relatively low, a large amount of water vapour is made to be condensed into droplet, mink cell focus in flue gas and light oil composition are condensed in flowing downward entrance spray treating column along condensation plate by droplet, additionally, droplet on condensation plate also has a unforeseeable effect, that is: the globule on condensation plate is not before falling within spray treating column, forms, on condensation plate, the effect being similar to cascade, it is possible to mink cell focus and light oil composition to a small amount of non-total condensation condense, flowing to expansion chamber from the two stage treatment tower liquid that stays of spray through Vertical Channel, through the stirring of over-rotation element, the minimum light oil of density is separated from light oil outlet through ring exit, the slightly larger mink cell focus of density is separated from mink cell focus outlet. it is exactly specifically: reach pressure P set in advance when mink cell focus exports pressure transducer above, when the pressure below sensor of mink cell focus outlet simultaneously reaches P+ Δ p, opens mink cell focus outlet valve, make mink cell focus separate. when mink cell focus exports pressure transducer above not up to pressure P set in advance, or when mink cell focus exports pressure below sensor more than P+ Δ p, close mink cell focus outlet valve. the moisture of expansion chamber lower floor flows to shower nozzle 33 through drainage channel 48. it is pointed out that described Δ p is described mink cell focus pressure differential between said two pressure transducer in described oil water separator, regulate the valve in drainage channel 48 can the displacement that drainage channel 48 is discharged be finely tuned. flue gas can not condensation portion enter in gas passage 35 from gas passage mouth 34.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.