CN203333585U - Gas barrier and material guide device of pyrolysis channel - Google Patents

Abstract

The utility model relates to a gas barrier and material guide device of a pyrolysis channel, belonging to the technical field of environmental engineering. The gas barrier and material guide device comprises a spiral annular pipe, a group of ball valve ports, a group of steel balls and a group of ball guide slot plates, wherein the inner ring surface of the spiral annular pipe is a cylindrical surface, and the outer ring surface of the spiral annular pipe is a polygonal cylindrical surface; the group of the ball valve ports are respectively radially separated at the minimal radial section of the variable section of the spiral annular pipe; the group of the steel balls are arranged on the back sides of the ball valve ports in the direction of rotating along with a cylinder in a one-to-one correspondence manner; the group of the ball guide slot plates are combined with the outer ring surface to constitute ball slots for limiting the steel balls to only move between the ball valve ports and a polygonal angular point, the polygonal angular point is outwards deviated from an envelope circle of the ball valve ports, and the number of the ball valve ports in the spiral annular pipe needs to ensure that at least one ball valve port is sealed by the steel ball at any time. The gas barrier and material guide device can be applied to gas barrier and material guide working conditions when a heat carrier is imported into and exported from the pyrolysis channel in high-temperature pyrolysis process; oxygen-rich gas can be effectively prevented from entering the pyrolysis channel in a following manner, and the return flow phenomenon of materials in the spiral pipe along with the rotation of the pyrolysis channel can be effectively avoided.

Description

A kind of choke material guiding device of pyrolysis passage

Technical field

The utility model belongs to field of environment engineering technology, is mainly used in thermal barrier in the high temperature garbage pyrolytic process and imports and derive the pyrolysis passage; Also can be in order to the choke guide operating mode of thermal barrier between cylindrical shell inside and outside other bitubular pyrolysis rotary kilns.

Background technology

The more employing continuous rotary of existing pyrolytic process solid heat carrier method, its technique is normally: the rotary type pyrolysis passage that thermal barrier enters anaerobism with treat that the pyrolysis material mixes and contact, while reaching pyrolysis temperature, macromolecular chain is cracked into low-molecular-weight hydrocarbon, discharge and collect as the inflammable gas product, what after pyrolysis, carbon shape thing discharged together with thermal barrier that the pyrolysis passage enters oxygen enrichment returns passage of heat combustion heating again, on the one hand by carbon residue after-flame in carbon shape thing after pyrolysis, on the other hand thermal barrier is heated to the temperature of processing requirement, a part enters the pyrolysis passage and realizes pyrolytic process recirculation, redundance is discharged the recycle system as lime-ash.This technique has higher thermal efficiency, but require blocking-up gas circuit and must not returning charge during the rotary type pyrolysis passage that thermal barrier imports and derive anaerobism, existing helical pipe material encapsulation technique is difficult to block fully gas circuit, and backflow in the other half cycle that is difficult to stop the spiral tube inherence to rotate, become the bottleneck of continuous rotary solid heat carrier method pyrolytic technique.

Summary of the invention

The utility model purpose is to provide the choke material guiding device of a kind of pyrolysis passage that can overcome above-mentioned defect, both be convenient to thermal barrier and imported and derived the pyrolysis passage, effectively stop again oxygen rich gas to be followed into the pyrolysis passage, can also effectively stop in spiral tube backflowing when material rotates along with cylinder.

The technical scheme that the utility model adopts is:

A kind of choke material guiding device of pyrolysis passage, it comprises:

The spirrillum endless tube, its inner ring surface is cylindrical surface, be socketed on outside feed conduit, outer ring surface is the polygon cylinder, both sides helicoidal surface sealing-in inner ring surface and outer ring surface, make the spirrillum endless tube form a multistage variable cross-section passage, the radial section maximum at the place, top, polygon angle of every section, the radial section minimum at polygon paddy place, the axial lift of the opening for feed of spirrillum endless tube and discharge port is greater than a spiral shell square;

One group of ball valve mouth, radial separations is at the smallest radial section of spirrillum endless tube variable cross-section respectively, and the ball valve open area should meet the requirement of heat carrier flow flux;

One group of steel ball, correspondence is configured in the ball valve mouth with cylinder sense of rotation rear side one by one; Sphere diameter is greater than ball valve mouth diameter, and can be nimblely from closing valve port;

One group of ball guilding trough plate, and outer ring surface constitutes the ball groove that the restriction steel ball can only move between ball valve mouth and top, polygon angle, the hole of kicking off, the outer ring surface place of each ball groove, configuration ball port lid on each ball hole, ball valve mouth and top, polygon angle are the two limit positions of steel ball in the ball groove, and the envelope circle of ball valve mouth is outwards departed from top, polygon angle;

Described spirrillum endless tube, each and Double-drum rotary pyrolysis kiln inner barrel, outer cylinder body technique connects, inner barrel, outer cylinder body is rigidly connected by support, described inner barrel forms the pyrolysis passage of Double-drum rotary pyrolysis kiln, inner barrel, the thermal barrier that circular channel between outer cylinder body forms Double-drum rotary pyrolysis kiln returns the passage of heat, tipping communicates with the pyrolysis passage at the discharge port of the spirrillum endless tube of pyrolysis passage head end, the opening for feed outer rim connects a scoop, scoop tangentially stretches out, scoop collar extension and outer cylinder body inwall from, and rotate with inner barrel and outer cylinder body, often with interior, outer cylinder body rotates a circle, orientation is drawn the heat-obtaining carrier and is returned the thermal barrier heated in the passage of heat and enter in the spirrillum endless tube, property performance period supplies thermal barrier to the pyrolysis passage, the large palpulus of scoop can guarantee the requirement of heat carrier flow flux, tipping communicates with the pyrolysis passage at the opening for feed of the spirrillum endless tube of pyrolysis passage tail end, and its discharge port returns the passage of heat with thermal barrier and communicates,

When described spirrillum endless tube rotates with inner barrel and outer cylinder body, the ball valve mouth of same ball groove and top, polygon angle relative position circulation change, when the polygon angle is pushed up lower than ball valve mouth position, steel ball leaves the ball valve mouth, fall into polygon angle top, by scoop, drawn and get the thermal barrier that enters the spirrillum endless tube and can enter the spirrillum endless tube through the ball valve mouth and move to previous variable cross-section channel section; When the polygon angle is risen in ball valve mouth position, steel ball leaves top, polygon angle, falls into the ball valve mouth, and material can not backflow; The setting of spirrillum endless tube endosphere valve port quantity, should guarantee at any one time, have at least a ball valve mouth to be sealed by steel ball, thereby the gas circuit that the thermal barrier of the pyrolysis passage of any moment anaerobism and oxygen enrichment returns between the passage of heat all is blocked.

System is work like this:

Treat that the pyrolysis material enters the pyrolysis passage of the inner barrel formation of Dual-barrel rotary kiln, simultaneously, in Dual-barrel rotary kiln, the thermal barrier that circular channel between outer cylinder body forms returns the thermal barrier heated in the passage of heat and is drawn and get by scoop, import the spirrillum endless tube, the spirrillum endless tube is with interior, outer cylinder body rotates, the ball valve mouth of same ball groove and top, polygon angle relative position circulation change, when scoop is drawn and got high-temperature heat carrier and while upwards rotating in lower-most point, the steel ball of the ball valve mouth of scoop second half leaves the ball valve mouth in succession, under the effect of ball guilding trough plate, tumble to the polygon angle and push up, the envelope circle of the ball valve mouth of spirrillum endless tube is departed from top, polygon angle, thereby the spirrillum that steel ball does not stop up thermal barrier is advanced, enter the thermal barrier of scoop in succession by the ball valve mouth of opening, one or more variable cross-section channel sections move forward, the part migration of enforcement from spirrillum endless tube entrance end to exit end, before scoop, the steel ball on top, the polygon angle of half cycle, get back to the ball valve mouth in succession, prevents that thermal barrier from backflowing, and simultaneously, because at any one time, has at least a ball valve mouth to be sealed by steel ball, thereby the air flue of inside and outside cylindrical shell of any moment all is blocked.

The beneficial effects of the utility model are:

1 both had been convenient to thermal barrier imports and derives the pyrolysis passage, effectively stops again oxygen rich gas to be followed into the pyrolysis passage, can also effectively stop in the spirrillum endless tube phenomenon of backflowing when material rotates along with the pyrolysis passage.

2 can utilize the inner barrel of Dual-barrel rotary kiln and the composition thermal barrier of the circular channel between outer cylinder body to return the passage of heat, not only make thermal barrier return the passage of heat the shortest, and, because the pyrolysis passage is wrapped in and returns in the passage of heat, obviously reduce heat leakage, improve thermo-efficiency.

The accompanying drawing explanation

Now in conjunction with diagram and embodiment, further illustrate:

Fig. 1 is the utility model process principle figure;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the D partial enlarged drawing of Fig. 1

In figure: the 1-outer cylinder body; The 2-thermal barrier returns the passage of heat; The 3-inner barrel; Top, 4-polygon angle; 5-pyrolysis passage; 6-ball guilding trough plate; 7-ball valve mouth; The 8-outer ring surface; 9-ball port lid; The 10-steel ball; The 11-inner ring surface; The 12-feed conduit; The 13-scoop; 14-spirrillum endless tube; The 21-helicoidal surface; 22-combustion gas interface; The import of 23-hot gas; 24-pyrolysis gas delivery line; 25-urceolus material guiding device; The 26-support; 27-inner core material guiding device; The excessive slag ring flat-plate of 28-slag outlet 29-

Embodiment

The choke material guiding device of pyrolysis passage, it comprises: spirrillum endless tube 14, its inner ring surface 11 is cylindrical surface, be socketed on outside feed conduit 12, outer ring surface 8 is the polygon cylinder, both sides helicoidal surface 21 sealing-in inner ring surfaces, outer interior ring, make the spirrillum endless tube form a variable cross-section passage, the radial section maximum at 4 places is pushed up at the polygon angle, variable cross-section passage two ends opening for feed, discharge port communicate with bitubular pyrolysis rotary kiln outer cylinder body 1, inner barrel 3 respectively, and the axial lift of described opening for feed and discharge port is greater than a spiral shell square;

One group of ball valve mouth 7, the smallest radial section of difference radial separations spirrillum endless tube variable cross-section, the ball valve open area should meet the requirement of heat carrier flow flux;

One group of steel ball 10, correspondence is configured in the ball valve mouth with cylinder sense of rotation rear side one by one; Sphere diameter is greater than ball valve mouth diameter, and can be nimblely from closing valve port;

One group of ball guilding trough plate 6, and outer ring surface constitutes the ball groove that the restriction steel ball can only move between ball valve mouth and top, polygon angle, hole is kicked off in order to lay or take out steel ball by the outer ring surface place of each ball groove, configuration ball port lid 9 on the ball hole, ball valve mouth and top, polygon angle are the two limit positions of steel ball in the ball groove, the envelope circle of ball valve mouth is outwards departed from top, polygon angle, the spirrillum endless tube is with inner barrel 3, outer cylinder body 1 rotates together, described inner barrel forms the pyrolysis passage 5 of pyrolysis kiln, in, the thermal barrier that circular channel between outer cylinder body forms the pyrolysis kiln returns the passage of heat 2, in, outer cylinder body is rigidly connected by support 26, when the spirrillum endless tube rotates, the ball valve mouth of same ball groove and top, polygon angle relative position circulation change, when the polygon angular vertex during lower than ball valve mouth position, steel ball leaves the ball valve mouth, fall into top, polygon angle, material can enter the spirrillum endless tube to previous variable cross-section channel section, when the polygon angular vertex, during higher than ball valve mouth position, steel ball leaves the polygon angular vertex, falls into the ball valve mouth, and material must not rollback, the setting of spirrillum endless tube endosphere valve port quantity, should guarantee at any one time, have at least a ball valve mouth to be sealed by steel ball, thereby the gas circuit that the thermal barrier of the pyrolysis passage of any moment anaerobism and oxygen enrichment returns between the passage of heat all is blocked,

Described spirrillum endless tube, each connects with the initial and end two ends difference technique of described pyrolysis passage, tipping communicates with the pyrolysis passage at the discharge port of the spirrillum endless tube of pyrolysis passage head end, the opening for feed outer rim connects a scoop 13, scoop tangentially stretches out, scoop collar extension and outer cylinder body inwall from, and rotate with inner barrel and outer cylinder body, often with inside and outside cylindrical shell, rotate a circle, orientation is drawn the heat-obtaining carrier and is returned the thermal barrier heated in the passage of heat and enter in the spirrillum endless tube; Property performance period supplies thermal barrier to the pyrolysis passage; The large palpulus of scoop can guarantee the requirement of heat carrier flow flux; Tipping communicates with the pyrolysis passage at the opening for feed of the spirrillum endless tube of pyrolysis passage tail end, and its discharge port returns the passage of heat with thermal barrier and communicates.

Treat that the pyrolysis material enters the pyrolysis passage of the inner barrel formation of Dual-barrel rotary kiln through feed conduit, simultaneously, in Dual-barrel rotary kiln, the thermal barrier that circular channel between outer cylinder body forms returns the thermal barrier heated in the passage of heat and is drawn and get by scoop, import the spirrillum endless tube, the spirrillum endless tube is with interior, outer cylinder body rotates, the ball valve mouth of same ball groove and top, polygon angle relative position circulation change, when scoop is drawn and got high-temperature heat carrier and while upwards rotating in lower-most point, the steel ball of the ball valve mouth of scoop second half leaves the ball valve mouth in succession, under the effect of ball guilding trough plate, tumble to the polygon angle and push up, the envelope circle of the ball valve mouth of spirrillum endless tube is departed from top, polygon angle, thereby the spirrillum that steel ball does not stop up thermal barrier is advanced, enter the thermal barrier of scoop in succession by the ball valve mouth of opening, one or more variable cross-section channel sections move forward, the part migration of enforcement from spirrillum endless tube entrance end to exit end, before scoop, the steel ball on top, the polygon angle of half cycle, get back to the ball valve mouth in succession, prevents that thermal barrier from backflowing, and simultaneously, because at any one time, has at least a ball valve mouth to be sealed by steel ball, thereby the air flue of inside and outside cylindrical shell of any moment is all deadened.Thermal barrier mixes at the pyrolysis passage with treating the pyrolysis material, in the guide effect axial advancement process of inner core material guiding device 27, reach pyrolysis temperature, treat that the pyrolysis material is as rubbish, oil-sand, resinous shale, greasy filth, the pyrolysis such as coal, its pyrolysis gas is derived from pyrolysis gas delivery line 24, thermal barrier after pyrolysis after carbon shape thing and cooling is through the choke guide effect of the spirrillum endless tube of pyrolysis passage tail end, drain into thermal barrier and return the passage of heat, the guide effect axle of urceolus material guiding device 25 with return course in, the hot gas heating entered via hot gas import 23 after-flame be carbon residue wherein, after reaching technological temperature, the part lime-ash as thermal barrier through scoop, the spirrillum endless tube enters the pyrolysis passage, carry out next circulation of pyrolytic process, another part lime-ash is through the slag ring flat-plate 29 that overflows, slag outlet 28 expels from kiln, waste gas after the heat hot carrier is discharged from combustion gas interface 22.

Claims (1)

1. the choke material guiding device of a pyrolysis passage, is characterized in that, comprising:

The spirrillum endless tube, its inner ring surface is cylindrical surface, be socketed on outside feed conduit, outer ring surface is the polygon cylinder, both sides helicoidal surface sealing-in inner ring surface and outer ring surface, make the spirrillum endless tube form a multistage variable cross-section passage, the radial section maximum at the place, top, polygon angle of every section, the radial section minimum at polygon paddy place, the axial lift of the opening for feed of spirrillum endless tube and discharge port is greater than a spiral shell square;

One group of ball valve mouth, radial separations is at the smallest radial section of spirrillum endless tube variable cross-section respectively, and the ball valve open area should meet the requirement of heat carrier flow flux;

One group of steel ball, correspondence is configured in the ball valve mouth with cylinder sense of rotation rear side one by one; Sphere diameter is greater than ball valve mouth diameter, and can be nimblely from closing valve port;

One group of ball guilding trough plate, and outer ring surface constitutes the ball groove that the restriction steel ball can only move between ball valve mouth and top, polygon angle, the hole of kicking off, the outer ring surface place of each ball groove, configuration ball port lid on each ball hole, ball valve mouth and top, polygon angle are the two limit positions of steel ball in the ball groove, and the envelope circle of ball valve mouth is outwards departed from top, polygon angle;

Described spirrillum endless tube, each and Double-drum rotary pyrolysis kiln inner barrel, outer cylinder body technique connects, inner barrel, outer cylinder body is rigidly connected by support, described inner barrel forms the pyrolysis passage of Double-drum rotary pyrolysis kiln, inner barrel, the thermal barrier that circular channel between outer cylinder body forms Double-drum rotary pyrolysis kiln returns the passage of heat, tipping communicates with the pyrolysis passage at the discharge port of the spirrillum endless tube of pyrolysis passage head end, the opening for feed outer rim connects a scoop, scoop tangentially stretches out, scoop collar extension and outer cylinder body inwall from, and rotate with inner barrel and outer cylinder body, often with interior, outer cylinder body rotates a circle, orientation is drawn the heat-obtaining carrier and is returned the thermal barrier heated in the passage of heat and enter in the spirrillum endless tube, property performance period supplies thermal barrier to the pyrolysis passage, the large palpulus of scoop can guarantee the requirement of heat carrier flow flux, tipping communicates with the pyrolysis passage at the opening for feed of the spirrillum endless tube of pyrolysis passage tail end, and its discharge port returns the passage of heat with thermal barrier and communicates,

When described spirrillum endless tube rotates with inner barrel and outer cylinder body, the ball valve mouth of same ball groove and top, polygon angle relative position circulation change, when the polygon angle is pushed up lower than ball valve mouth position, steel ball leaves the ball valve mouth, fall into polygon angle top, by scoop, drawn and get the thermal barrier that enters the spirrillum endless tube and can enter the spirrillum endless tube through the ball valve mouth and move to previous variable cross-section channel section; When the polygon angle is risen in ball valve mouth position, steel ball leaves top, polygon angle, falls into the ball valve mouth, and material can not backflow; The setting of spirrillum endless tube endosphere valve port quantity, should guarantee at any one time, have at least a ball valve mouth to be sealed by steel ball, thereby the gas circuit that the thermal barrier of the pyrolysis passage of any moment anaerobism and oxygen enrichment returns between the passage of heat all is blocked.

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