A kind of pyrolyzing sludge carbonization heating system
Technical field
The present invention relates to a kind of pyrolyzing sludge carbonization heating system, particularly relate to the equipment that a kind of high-temperature flue gas that oily sludge is produced in pyrolysis charring process processes and recycles.
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.
In August, 2015, the innovation and creation that application number is 201320497216.4 of Granted publication on the 11st disclosed a kind of refinery sludge carbonization process and carbonization retracting device, and its preprocessing unit is external-heat drier 1 ', and this drying machine is provided with drying machine chuck 2 '; Its carbonization unit is external-heat rotary carbide furnace 3 ', and rotary carbide furnace is provided with rotary carbide furnace chuck 4 '; Its condensation and oil-water separation unit include fume collection pipeline 5 ', spray column 6 ', oil water separator 7 ', and gas-phase product is introduced spray column 6 ' by fume collection pipeline 5 ', and the carbonization liquid obtained after spray realizes oil after oil water separator 7 ', water separates; Its combustible gas range site includes combustor 8 ', and combustor 8 ' and drying machine chuck 2 ', rotary carbide furnace chuck 4 ' are connected by flue gas delivery pipe road and carry out heat supply.
But, this equipment in use there is problems in that
(1) in this technical scheme, mink cell focus and the light oil collected due to these innovation and creation do not separate, and cause needing special equipment to be easily separated in subsequent technique, add man-hour, improve cost, and utilization rate of equipment and installations is not high.
(2) in this technical scheme, need to arranging combustor specially and carry out burn processing for the gas after shower water is processed, its high-temperature flue gas supports mummification and carbonization.
(3) furthermore, the NOX contained in its tail gas in the apparatus is higher, the purified treatment of follow-up flue gas need to be carried out, environmental-protecting performance is not high, particularly when some mink cell focus compositions are higher time, its gas componant is complex, and the pressure that its NOX processes is high, the temperature of combustor is wayward, and then NOx production is more.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art part, overcome mink cell focus and light oil does not separate, smoke combustion structure complicated and DS NOx Est amount is big problem, it is provided that a kind of pyrolyzing sludge carbonization heating system.
A kind of pyrolyzing sludge carbonization heating system, including smoke feed pipe, cyclone dust extractor, spray treating column, oil water separator, burner, mummification room and carbonization chamber; Described mummification room enters dedusting in cyclone dust extractor with the one-level gas-phase product of generation in described carbonization chamber work process through smoke feed pipe, divides by acquisition secondary gas phase product and oil after spray treating column, oil water separator; Described oil water separator is arranged on immediately below spray treating column; The outer wall of described oil water separator and described spray treating column is tubular and is coaxially disposed, and air shooter is arranged between spray treating column and oil water separator; 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 the inside outer wall of described oil water separator, and described 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 burner includes fuel and discharges assembly, air line, burner wall, lighter, and described fuel is discharged assembly and included discharging termination, fuel riser and flame stabilization structure, and the air flue that described burner wall surrounds extends through burner wall; The front end of described burner wall has the port of export of air flue; Described flame stabilization structure is arranged on inside the first of the side of the axis of burner wall, and described flame stabilization structure is arranged on the port of export place of burner wall; Described air line is set to bending; Being provided with stator in described air line, stator extends through inside the second of burner wall to the port of export; Described secondary gas phase product introduces and carries out combustion reaction in the air flue of described burner and produce high-temperature flue gas mummification room, carbonization chamber are carried out external-heat heat supply.
As preferably, described oil water separator lower end is provided with expansion chamber, and described expansion chamber is that inverted cone is connected with the outer wall of oil water separator, the axis of described expansion chamber and the dead in line of oil water separator, and the inside outer wall of described oil water separator is provided with sensor.
As preferably, the outer wall of described oil water separator being 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; Described expansion chamber bottom is provided with slagging channel.
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 is bent downwardly; 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, being provided with horizontal comb in described spray treating column, described horizontal comb is arranged on spray treating column inside outer wall, is positioned on air shooter;At least provided with a shower nozzle in described spray treating column, described shower nozzle is arranged on described horizontal comb top; Being provided with packing layer on described horizontal comb, described packing layer upper end is positioned under described shower nozzle.
As preferably, described spray treating column top offers gas passage mouth, and described gas passage mouth connects gas passage, is provided with condensation plate in described gas passage, and 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.
As preferably, described cyclone dust extractor is connected with spray treating column by air shooter, 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.
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.
Beneficial effects of the present invention:
(1) spray treating column and oil water separator are united two into one by the present invention dexterously, the oil obtained after spray process is divided and is made directly layering, in oil water separator, mink cell focus outlet and light oil outlet are provided separately, mink cell focus and light oil can directly be separated at separation phase, avoid the separation process of subsequent technique, and spray treating column, oil water separator, expansion chamber and conical baffle coaxial line, it is ensured that the stability of spray treating column and oil water separator operating.
(2) present invention utilizes cyclone dust extractor, spray treating column that the gas-phase product produced in mummification and pyrolysis charring process carries out spray liquefaction process, and the gas-phase product after separation is passed directly in burner and carries out burning and obtain high-temperature flue gas directly mummification or carbonization is carried out heat supply; In the process, because of utilize its gas-phase product of the technical program can directly and this burner carry out with the use of, and its can effectively assist this burner effectively reduce in combustion process produce NOX; Simplifying the structure of this device, environmental-protecting performance is higher simultaneously.
(3) element that rotates arranged in the conical outlet of oil water separator of the present invention can being stirred the liquid in oil water separator, 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, rotation member upper can form low-pressure area and facilitate the downward liquid flow in Vertical Channel; 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.
(4) 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.
(5) present invention utilizes the heat of one-level gas-phase product self that cyclone dust extractor is heated so that the surface temperature in cyclone dust extractor and smoke contacts face is higher than flue gas dew point temperature, it is to avoid the generation of leak source corrosion phenomenon on contact surface;Simultaneously the present invention prevents what dew point corrosion was taked its heat of heating measures from one-level gas-phase product itself, energy-conserving and environment-protective.
(6) present invention first passes through cyclone dust extractor and carries out independent dust removal process and carried out spray process further through the shower nozzle in spray treating column, and sprays process itself and has the effect of dedusting. So, actual having carried out of the present invention once sprays, twice dedusting, and dust is very easily adhere to a large amount of mink cell focus and light oil composition, twice dedusting is equivalent to the mink cell focus and the light oil composition that remove in flue gas further, thus the mink cell focus more thoroughly removed in flue gas and light oil composition, dust itself is also able to more remove thoroughly simultaneously.
(7) present invention utilizes the temperature of flue gas itself that cyclone dust extractor is 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.
(8) 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, what in gas, the condensation process of mink cell focus and light oil composition carried out is more abundant, and mink cell focus and lightweight oil separating are more thorough.
(9) the eccentric asymmetrical setting of burner provided by the invention overcomes the problem of the too high generation causing more NOx of temperature in existing burner heat supply burner hearth, makes fuel combustion can control fully again temperature, reduces the generation of NOx; Air line is designed to produce current difference when curved shape causes air flow through the pipeline of bending, has not only coordinated the present invention to reduce the NOx purpose generated and has also reached to reduce the purpose of equipment occupation space; Flue gas is finally burnt, it is prevented that still contain harmful components in final gas and environment is worked the mischief, and the combustor that the present invention need not be special simplifies equipment; And the present invention also has an effect being difficult to expect, the air flue of burner will be passed into from spray treating column gas out, air is preheated by the waste heat that can utilize this gas, simultaneously because oxygen content is extremely low in this gas, the effect of similar noble gas can be played when burning, reduce the generation of NOx further.
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 the overall schematic of prior art.
Fig. 2 is the overall structure schematic diagram of a kind of pyrolyzing sludge carbonization heating system of the present invention.
Fig. 3 is the structural representation of cyclone dust extractor, spray treating column and oil water separator.
Fig. 4 is the overall structure schematic diagram of cyclone dust extractor.
Fig. 5 is the structural representation of spray treating column and oil water separator.
Fig. 6 is the overall structure schematic diagram of burner.
Fig. 7 is that schematic diagram is looked on the burner right side.
Fig. 8 is that component diagram discharged by fuel.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is illustrated clearly and completely.
Embodiment
Fig. 1 is the overall schematic of prior art, Fig. 2 to be the overall structure schematic diagram of a kind of pyrolyzing sludge carbonization heating system of the present invention, Fig. 3 be cyclone dust extractor, spray treating column and the structural representation of oil water separator, Fig. 4 are the overall structure schematic diagram of cyclone dust extractor, Fig. 5 to be spray treating column and the structural representation of oil water separator, Fig. 6 the be overall structure schematic diagram of burner, Fig. 7 are the burner right side is that fuel device discharges component diagram depending on schematic diagram, Fig. 8.As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the present embodiment provides a kind of pyrolyzing sludge carbonization heating system, including smoke feed pipe 1, cyclone dust extractor 2, spray treating column 3, oil water separator 4, burner 5, mummification room 6 and carbonization chamber 7; Described mummification room 6 enters dedusting in cyclone dust extractor 2 with the one-level gas-phase product of generation in described carbonization chamber 7 work process through smoke feed pipe 1, by obtaining secondary gas phase product and oil point after spray treating column 3, oil water separator 4; Described oil water separator 4 is arranged on immediately below spray treating column 3; The outer wall 30 of described oil water separator 4 and described spray treating column 3 for tubular and is coaxially disposed, and air shooter 21 is arranged between spray treating column 3 and 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 described Vertical Channel 42 lower end connects with conical outlet 43; Described conical baffle 44 lower end is connected to inside the outer wall 30 of described oil water separator 4, and described 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; Described burner 5 includes fuel and discharges assembly 51, air line 52, burner wall 53, lighter 54, described fuel is discharged assembly 51 and is included discharging termination 511, fuel riser 512 and flame stabilization structure 513, and the air flue 55 that described burner wall 53 surrounds extends through burner wall 53; The front end 531 of described burner wall 53 has the port of export 532 of air flue 55; Described flame stabilization structure 513 is arranged on inside the first of the side of the axis 533 of burner wall 53 534, and described flame stabilization structure 513 is arranged on the port of export 532 place of burner wall 53; Described air line 52 is set to bending; Being provided with stator 56 in described air line 52, stator 56 extends through 535 to the port of export 532 inside the second of burner wall 53; Described secondary gas phase product introduces and carries out combustion reaction in the air flue 55 of described burner 5 and produce high-temperature flue gas mummification room 6, carbonization chamber 7 are carried out external-heat heat supply; 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, the axis of described expansion chamber 4a and the dead in line of oil water separator 4, be provided with sensor 4b inside the outer wall 30 of described oil water separator 4; The outer wall 30 of described oil water separator 4 is provided with light oil outlet 46 and mink cell focus outlet 47, 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 4a bottom is provided with slagging channel 48; Being provided with rotation element 410 in described conical outlet 43, described rotation element 410 be disc, the axis of described rotation element 410 and the dead in line of 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 is bent downwardly; 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;Being provided with horizontal comb 31 in described spray treating column 3, described horizontal comb 31 is arranged on inside spray treating column 3 outer wall 30, is positioned on air shooter 21; At least provided with a shower nozzle 33 in described spray treating column 3, described shower nozzle 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 spray treating column 3 top offers gas passage mouth 34, described gas passage mouth 34 connects 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; The dead in line of the axis of described Vertical Channel 42 and described oil water separator 4; Described cyclone dust extractor 2 is connected with spray treating column 3 by air shooter 21, 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 1, adds hot channel 22 port of export and is connected with smoke feed pipe 1 and is positioned at and add hot channel 22 entrance point and be connected with smoke feed pipe 1 after contact; 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 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 slagging channel 48.
Work process: the one-level gas-phase product that oily sludge produces in mummification and pyrolysis charring process first enters from smoke feed pipe 1 and adds hot channel 22, it is heated with smoke contacts face in cyclone dust extractor 2, prevent dew point corrosion, then flue gas enters cyclone dust extractor 2 from smoke feed pipe 1, remove the dust granules carried in smoke, cyclone dust extractor 2 is arranged below pipeline and is connected between spray treating column 3 and oil water separator 4, it is positioned under air shooter 21 opening, is provided with the dust that blower fan makes to remove in pipeline and can pass in oil water separator; Flue gas enters spray treating column 3 through air shooter 21 after cyclone dust extractor 2, flue gas passes upward through horizontal comb 31 and packing layer 32, contact with downward ejecting liquid in packing layer, condensable part and dust flow to expansion chamber 4a with ejecting liquid through oil water separator 4, ejecting liquid flows out conical outlet 43 from Vertical Channel 42 through the stirring of over-rotation element 410, and the light oil that density is little exports 46 through ring exit 45 from light oil and separates; The slightly larger mink cell focus of density is stayed and is exported 47 from mink cell focus under conical baffle 44 and separate. It is exactly specifically: reach pressure P set in advance when mink cell focus exports pressure transducer 4b 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. Waste water and waste residue in expansion chamber can pass through slagging channel 48 and discharge expansion chamber.It is pointed out that described Δ p is described mink cell focus pressure differential between said two pressure transducer 4b in described oil water separator 4, the valve regulated in slagging channel 48 makes the displacement that slagging channel 48 is discharged identical with whole smoke processing system inflow. flue gas can not condensation portion enter in gas passage 35 from gas passage mouth 34, and then within entrance burner 5. in flue gas can not condensation portion through condensation plate 36 time, the condensation plate 36 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 3 along condensation plate 36 by droplet, simultaneously the dust in absorption flue gas, additionally, droplet on condensation plate 36 also has a unforeseeable effect, that is: the globule on condensation plate 36 is not before falling within spray treating column 3, condensation plate 36 forms the effect being similar to cascade, the dust not eliminated on a small quantity can be adsorbed, it is possible to mink cell focus and light oil to a small amount of non-total condensation condense. owing to the present invention utilizes cyclone dust extractor, the gas-phase product produced in mummification and pyrolysis charring process is carried out spray liquefaction and processes by spray treating column, obtained gas-phase product is more pure, impurity is less, can directly with burner provided by the invention with the use of, burner provided by the invention utilizes the eccentric asymmetrical setting of its burner, combustion zone is made to be divided into lean burn district and fuel-rich region, fuel-rich region air content is not enough relative to fuel, so temperature can not reach its maximum temperature, and lean burn district air content is excessive comparatively speaking, excessive air can reduce the flame temperature in this region, the imperfect combustion product of fuel-rich region moves lean burn district at the flows by action of pressure differential and again burns, fuel burns at twice, and also to make its flame temperature not reach the highest. secondary gas phase product oxygen content provided by the invention is inherently extremely low, and condensable composition therein is sufficiently separated so that secondary gas phase product functions similarly to the effect of noble gas after passing into burner, suppresses the formation of NOx further, additionally, by the combustion process of burner make the gas that pyrolysis carbonization produces be fully used carry out heat supply at the same time it can also be reduce the tail gas pollution to air.
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.