CN102492444B - Spiral feeder used for fluidized-bed-type fast biomass pyrolysis - Google Patents

Abstract

Translated fromChinese

本发明涉及一种进料装置，特别是一种用于流化床生物质快速热解的螺旋进料器。料仓位于关风器的上方，通过关风器将料仓内的物料输送到进料器壳体内，生物质再由壳体内的绞龙连续推入流化床反应器内。通过关风器的机械密封以及输料管内填充的物料的隔压锁风，保证了进料器不会出现反喷现象；搅动杆构件位于料仓内，关风器旋转卸料的同时为搅动杆构件提供动力，使搅动杆构件上下运动并搅动物料，避免出现搭桥、挂壁等现象；变频电机连接齿轮变速箱为绞龙及关风器提供动力，同时通过速度配比保证二者的进料量一致。

The invention relates to a feeding device, in particular to a screw feeder for rapid pyrolysis of fluidized bed biomass. The silo is located above the air locker, and the material in the silo is transported to the feeder shell through the air locker, and the biomass is continuously pushed into the fluidized bed reactor by the auger in the shell. Through the mechanical seal of the air locker and the pressure and air lock of the material filled in the delivery pipe, it is ensured that the feeder will not have back spray phenomenon; The rod member provides power to make the agitating rod member move up and down and stir the material, avoiding bridging, hanging on the wall, etc.; the frequency conversion motor is connected to the gear box to provide power for the auger and the air lock, and at the same time, the speed ratio ensures the progress of the two. The amount of material is consistent.

Description

A kind of feeding screw for biomass fluid bed fast pyrogenation

Technical field

The present invention relates to a kind of feed arrangement, particularly a kind of feeding screw for biomass fluid bed fast pyrogenation.

Background technology

China's biomass energy is very abundant, and current national agricultural crop straw can obtain approximately 6.87 hundred million t every year, and approximately 60% can recovery energy, approximately has every year 4.2 hundred million t stalks to can be used as biomass material, amounts to approximately 2.1 hundred million t standard coals; Forestry residue can obtain approximately 1.25 hundred million t every year, amounts to approximately 7,125 ten thousand t standard coals.It is predicted, to the year two thousand fifty, China can develop biomass resource amount and at least can reach 1,500,000,000 t.To effective utilization of living beings, energy problem can not only be solved, and environmental problem can be solved, there is good effect at aspects such as energy-saving and emission-reduction, reduction carbon emission, energy recovery.Fluidized bed type fast pyrolysis technology can be converted to the living beings of low energy densities high-grade bio oil and other energy products, to produce fuel or chemical products, is considered to one of the most potential biomass energy utilization technologies.

In biomass fast pyrogenation process, must guarantee that material enters fluidized-bed reactor continuously, equably, and require feeder and fluidized-bed reactor strictly to seal.Due to features such as living beings have that density is little, angle of repose is large, poor fluidities, in reinforced process, in feed bin, be easy to occur the problems such as bridgings, wall built-up, thereby cause feeding in raw material unstable or stop feed.Biomass fluid bed fast pyrogenation system is positive pressure system, causes the thermal current in reactor to be overflowed if seal bad meeting, and formation is regurgitated, and makes material be difficult to enter reactor.

Existing biomass feeder can't thoroughly solve has the problem such as bridge formation, wall built-up that the reasons such as density is little, angle of repose large, poor fluidity cause due to living beings.Meanwhile, existing biomass feeder can not be guaranteeing continuously, prevent from regurgitating in uniform feeding.These two kinds of factors have limited the development of biomass fluid bed fast pyrolysis technology to a great extent.

Summary of the invention

The object of the invention is the various deficiencies that exist in order to overcome existing biomass feeder, proposed a kind ofly not only can avoid charging smooth but also can prevent the feeding screw for biomass fluid bed fast pyrogenation of regurgitating.

The present invention realizes by following technical approach: feeder housing, airlock, feed bin vertically connect by flange, feeding packing auger is positioned at feeder housing, living beings, in airlock enters feeder housing, then push fluidized-bed reactor by auger, guaranteed charging continuously, evenly.Meanwhile, the material envelope of material in pressing lock wind and feeder housing of airlock has played the effect of counter-jetting resistance; The agitator arm member that is positioned at feed bin is made up of straight agitator arm, curved agitator arm, connecting rod, contact, and one end is connected with bin wall by bolt, other end linking springs member.Straight agitator arm is connected by guide rail with curved agitator arm, welds connecting rod on agitator arm, and connecting rod two ends are contact; The lower end of curved agitator arm contacts with the blade of airlock, by rotatablely moving as agitator arm member provides power of airlock, agitator arm member is moved upward and extrusion spring member.In the time that the lower end of agitator arm member departs from the blade of airlock, spring member is pushed agitator arm member to be about to the blade that rotation is come to, by the stirring material that moves up and down of agitator arm member, avoids occurring the phenomenons such as bridging, wall built-up; Frequency modulation motor driven gear gearbox, for auger and airlock provide power, guarantees that the inlet amount of the two is consistent simultaneously; Feeder housing and speed-changing gear box are bolted on base.

Irregular, different angles layout that described connecting rod becomes, guarantees good disturbance effect.

Described contact is aluminium ball, is welded on connecting rod two ends.

Described spring member is inner is thrust spring.

Compared with prior art, because airlock has good mechanical seal effect, the material of filling between auger and feed pipe can play the effect of material envelope, and that has realized fluidized-bed reactor and feeding screw locks wind every pressing; Owing to being provided with agitator arm member in feed bin, provide power with the rotation of airlock blade, do not need additionally to provide power to realize again the disturbance of material in feed bin, avoid occurring the phenomenons such as bridging, wall built-up.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is left view of the present invention.

Fig. 3 is partial enlarged drawing of the present invention

Number in the figure:

1-auger; 2-feeder housing; 3-airlock; 4-feed bin; 5-contact; 6-connecting rod; 7-speed-changing gear box; 8-frequency modulation motor; 9-base; 10-spring member; The straight agitator arm of 11-; 12-guide rail; The curved agitator arm of 13-.

The specific embodiment

The invention provides a kind of feeding screw for biomass fluid bed fast pyrogenation, below by the drawings and specific embodiments, the invention will be further described.

As depicted in figs. 1 and 2, the structure of this biomass screw feeder is: feeder housing 2, airlock 3, feed bin 4 vertically connect by flange,feeding packing auger 1 is positioned at feeder housing 2, living beings are in airlock 3 enters feeder housing 2, push fluidized-bed reactor byauger 1 again, guaranteed the continuous, even of charging.Meanwhile, the material every pressing lock wind and feeder housing 2 interior materials of airlock 3 seals the effect of having played counter-jetting resistance; The agitator arm member that is positioned at feed bin 4 is made up ofstraight agitator arm 11,curved agitator arm 13, connecting rod 6,contact 5, one end is connected with bin wall by bolt, other end linkingsprings member 10,straight agitator arm 11 is connected byguide rail 12 withcurved agitator arm 13, on agitator arm, weld connecting rod 6, connecting rod 6 two ends arecontact 5; The lower end ofcurved agitator arm 13 contacts with the blade of airlock 3, by rotatablely moving as agitator arm member provides power of airlock 3, agitator arm is moved upward and extrusion spring member 10.In the time that the lower end ofcurved agitator arm 13 departs from the blade of airlock 3,spring member 10 is pushed agitator arm member to be about to the blade that rotation is come to, by the stirring material that moves up and down of agitator arm member, avoids occurring the phenomenons such as bridging, wall built-up; Frequency modulation motor 8 driven gear gearboxes 7, forauger 1 and airlock 3 provide power, guarantee that the inlet amount of the two is consistent simultaneously; Feeder housing 2 is bolted on base 9 with speed-changing gear box 7.

Claims (4)

Translated fromChinese

1.一种用于流化床生物质快速热解的螺旋进料器，其特征在于：进料器壳体（2）、关风器（3）、料仓（4）通过法兰竖直连接，进料绞龙（1）位于进料器壳体内，生物质经关风器（3）进入进料器壳体（2）内，再由绞龙（1）推入流化床反应器，保证了进料的连续、均匀；同时，关风器（3）的隔压锁风和进料器壳体（2）内物料的料封起到了防反喷的作用；位于料仓（4）内的搅动杆构件由直搅动杆（11）、弯搅动杆（13）、连杆（6）、触头（5）组成，一端通过螺栓与料仓壁连接，另一端连接弹簧构件（10），直搅动杆（11）和弯搅动杆（13）由导轨（12）连接，搅动杆上焊接连杆（6），连杆（6）两端为触头（5）；弯搅动杆（13）的下端与关风器（3）的叶片接触，通过关风器（3）的旋转运动为搅动杆构件提供动力，使搅动杆构件向上运动并挤压弹簧构件（10）；当弯搅动杆（13）的下端脱离关风器（3）的叶片时，弹簧构件（10）将搅动杆构件推向即将旋转过来的叶片，通过搅动杆构件的上下运动搅动物料，避免出现搭桥、挂壁等现象；调频电机（8）带动齿轮变速箱（7）为绞龙（1）和关风器（3）提供动力，同时保证二者的进料量一致；进料器壳体（2）与齿轮变速箱（7）通过螺栓固定在底座（9）上。1. A screw feeder for rapid pyrolysis of biomass in a fluidized bed, characterized in that: the feeder housing (2), the air shutoff device (3), and the silo (4) are vertically connected through flanges Connection, the feed auger (1) is located in the feeder shell, the biomass enters the feeder shell (2) through the air shutoff (3), and then is pushed into the fluidized bed reactor by the auger (1) , to ensure the continuous and uniform feeding; at the same time, the pressure and air lock of the air shutoff device (3) and the material seal of the material in the feeder housing (2) play the role of anti-spray; located in the silo (4 The agitating rod member in ) is composed of a straight agitating rod (11), a curved agitating rod (13), a connecting rod (6), and a contact (5). One end is connected to the silo wall by a bolt, and the other end is connected to a spring member (10 ), the straight stirring rod (11) and the curved stirring rod (13) are connected by the guide rail (12), the connecting rod (6) is welded on the stirring rod, and the two ends of the connecting rod (6) are contacts (5); the curved stirring rod ( The lower end of 13) is in contact with the blades of the air lock (3), and the rotation of the air lock (3) provides power for the agitating rod member, so that the agitating rod member moves upward and squeezes the spring member (10); When the lower end of the rod (13) is separated from the blade of the air shutoff device (3), the spring member (10) pushes the stirring rod member to the blade that is about to rotate, and stirs the material through the up and down movement of the stirring rod member to avoid bridging and hanging on the wall and other phenomena; the frequency modulation motor (8) drives the gear box (7) to provide power for the auger (1) and the air lock (3), and at the same time ensures that the feeding amount of the two is consistent; the feeder housing (2) and The gear box (7) is fixed on the base (9) by bolts.2.根据权利要求1所述的用于流化床生物质快速热解的螺旋进料器，其特征在于：所述连杆（6）在直搅动杆（11）和弯搅动杆（13）上呈不规则、不同角度布置，保证良好的扰动效果。2. The screw feeder for rapid pyrolysis of fluidized bed biomass according to claim 1, characterized in that: the connecting rod (6) is connected between the straight stirring rod (11) and the curved stirring rod (13) The top is irregular and arranged at different angles to ensure a good disturbance effect.3.根据权利要求1所述的用于流化床生物质快速热解的螺旋进料器，其特征在于：所述触头（5）为铝球，焊接在连杆（6）两端，增强搅动效果。3. The screw feeder for rapid pyrolysis of fluidized bed biomass according to claim 1, characterized in that: the contact (5) is an aluminum ball welded to both ends of the connecting rod (6), Enhances agitation.4.根据权利要求1所述的用于流化床生物质快速热解的螺旋进料器，其特征在于：所述弹簧构件（10）内部为止推弹簧。4 . The screw feeder for rapid pyrolysis of fluidized bed biomass according to claim 1 , characterized in that: a thrust spring inside the spring member ( 10 ).

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