CN103740386A

CN103740386A - Biomass two-stage reactor system

Info

Publication number: CN103740386A
Application number: CN201310746928.XA
Authority: CN
Inventors: 常厚春; 马革; 刘巍; 杨红斌
Original assignee: Guangzhou Devotion Thermal Technology Co Ltd
Current assignee: Guangzhou Devotion Thermal Technology Co Ltd
Priority date: 2013-12-30
Filing date: 2013-12-30
Publication date: 2014-04-23

Abstract

The invention discloses a biomass two-stage reactor system consisting of a main reactor, a gas-solid separator and an auxiliary reactor with a feed opening, wherein a gas outlet of the main reactor is communicated with a gas inlet of the gas-solid separator, a discharge opening of the gas-solid separator is communicated with the feed opening of the auxiliary reactor, and a shakeout pipe of the auxiliary reactor is communicated with a sand inlet of the main reactor; the auxiliary reactor is provided with a primary air inlet and a secondary air inlet, and through reasonable air distribution, biomass charcoals can be burnt fully, the slagging of quartz sand is avoided, and the smooth circulation flow of quartz sand in the system is promoted.

Description

Biomass two-stage reactor system

Technical field

The invention belongs to biomass fast pyrogenation technical field, specifically relate to a kind of system that two-stage reactor is prepared biological fuel gas of applying.

Background technology

In biomass pyrolytic technical field, utilizing circulating fluid bed reactor to prepare biological fuel gas has been common technology.Circulating fluidized bed reactor system comprises reactor, cyclonic separator and process furnace, biomass fuel enters reactor, high quartz sand by thermal energy transfer to biomass fuel, make the reaction of biomass fuel generation fast pyrogenation, produce biological fuel gas and residual biomass charcoal, cyclonic separator is isolated biomass charcoal and is burnt to heat quartz sand to process furnace, and high quartz sand returns to main reactor and continues to participate in fast pyrogenation reaction.Process furnace mainly plays loopback high quartz sand and supply quartz sand, and because burning is insufficient, the burning of residual biomass charcoal produces tar, affects the mobility of the quartz sand of loopback, so that whole system poor fluidity, even produces and stops up.

Summary of the invention

In order to prevent the quartz sand coking of loopback to main reactor, impact is mobile clear and coherent, the invention provides one by reasonable cloth wind, raising combustion efficacy, avoids quartz sand coking, promotes the mobile unobstructed biomass two-stage reactor system of quartz sand.

In order to realize above object, technical scheme of the present invention is as follows: a kind of biomass two-stage reactor system, by have sand inlet and air outlet main reactor, there is the gas-solid separator of inlet mouth and discharge port and the auxiliary reactor that has opening for feed and be provided with knockout pipe forms, the air outlet of described main reactor is communicated with the inlet mouth of gas-solid separator, the discharge port of gas-solid separator is communicated with the opening for feed of auxiliary reactor, and the knockout pipe of auxiliary reactor is communicated with the sand inlet of main reactor; Described auxiliary reactor offers blast inlet and secondary air inlet.

Further, described auxiliary reactor consists of reaction chamber and air compartment, and described reaction chamber is offered secondary air inlet, and described air compartment is offered primary air nozzle.

Described main reactor and/or auxiliary reactor setting have the air supply device of blast cap, and described blast cap consists of the sheathed block with air outlet opening of airduct and airduct upper end.

Described air supply device is provided with the air distribution plate for assembling blast cap, and connects knockout pipe at air distribution plate center.

Compared with prior art, after the present invention utilizes pyrolysis reactor endogenous substance pyrolytic gasification, separation acquisition biomass carbon heats quartz sand in auxiliary reactor, the quartz sand of heat enters main reactor to be mixed with biomass fuel and passes to biomass fuel heat, auxiliary reactor is in combustion processes, by the reasonable wind distribution of blast inlet and secondary air inlet, make biomass charcoal burning more abundant, avoid quartz sand slagging scorification, promote that quartz sand circulates unobstructed in system.

Accompanying drawing explanation

Fig. 1 is the structural representation of biomass two-stage reactor system.

Fig. 2 is the structural representation of air supply device.

Fig. 3 is the structural representation of blast cap.

Embodiment

As shown in Figure 1, biomass two-stage reactor system is comprised of main reactor 1, gas-solid separator, auxiliary reactor 3.

Main reactor 1 consists of reaction chamber 12 and air compartment 11, and reaction chamber uprightly arranges, and air compartment accumbency arranges.Reaction chamber 12 bottoms arrange aerofoil 13, and sand inlet 15 is offered in reaction chamber 12 bottoms, and opening for feed 14 is offered at reaction chamber 12 middle parts, and reaction chamber 12 tops set out gas port 13.

Gas-solid separator is cyclonic separator 2, and it offers inlet mouth 21, air outlet 22 and discharge port 23.

Auxiliary reactor 3 consists of reaction chamber 31 and air compartment 32.Opening for feed 37 and stop-off mouth 35 are offered in reaction chamber 31 bottoms, and secondary air inlet 34 is offered at reaction chamber 31 middle parts, and reaction chamber 31 tops set out mouth 33.Air compartment 32 bottoms are offered blast inlet 36 one time.Reaction chamber 31 arranges air supply device 4 with the junction of air compartment 32.As shown in Figure 2, air supply device 4 is comprised of air distribution plate 41 and blast cap 42.Air distribution plate is circular, and its center offers macropore 45, and macropore connects knockout pipe 5.The periphery of the macropore 45 of air distribution plate 41 is uniform offers some apertures, this aperture blast cap 42 that is used for planting.As shown in Figure 3, blast cap 42 is comprised of airduct 43 and block 44, the sheathed block in upper end of airduct, and airduct upper end forms wind chamber 46 with block inwall, and the side opening of block is established air outlet opening 47.

The air outlet 13 of main reactor 1 is communicated with the inlet mouth 21 of cyclonic separator 2, and the discharge port 23 of cyclonic separator 2 is communicated with the opening for feed 37 of auxiliary reactor 3, and the air supply device 4 of auxiliary reactor 3 connects knockout pipe 5, and knockout pipe 5 is communicated with the sand inlet 15 of main reactor 1.

The principle of work of biomass two-stage reactor system is: first at the air compartment of main reactor, burn, while reaching 600 ℃ of left and right with heating quartz sand, input biomass fuel, under the hot conditions of 500 ℃ of left and right, fast pyrogenation reaction, produces biological fuel gas and biomass charcoal; Then, the quartz sand that biomass gas and biomass charcoal and part are carried under one's arms enters cyclonic separator, from the isolated biomass charcoal of biological fuel gas and quartz sand, drops down onto auxiliary reactor; Then, biomass charcoal continues at auxiliary reactor after-flame, thus heating quartz sand, the recycle of high quartz sand input main reactor, auxiliary reactor burning also produces high-temperature residual heat flue gas for heating other medium.In auxiliary reactor combustion processes, in order to make the abundant after-flame of biomass charcoal, by blast inlet and secondary air inlet, pass into wind, increase the required oxygen of burning, prevent slagging scorification.When one time wind passes through the blast cap of air supply device, wind blows out from the air outlet opening of block, and ash content is stopped by block completely, and airduct is not stopped up by ash content, thereby the smooth and easy reaction chamber that enters of wind of assurance is participated in burning.

Claims

1. a biomass two-stage reactor system, by have sand inlet and air outlet main reactor, there is the gas-solid separator of inlet mouth and discharge port and the auxiliary reactor that has opening for feed and be provided with knockout pipe forms, it is characterized in that: the air outlet of described main reactor is communicated with the inlet mouth of gas-solid separator, the discharge port of gas-solid separator is communicated with the opening for feed of auxiliary reactor, and the knockout pipe of auxiliary reactor is communicated with the sand inlet of main reactor; Described auxiliary reactor offers blast inlet and secondary air inlet.

2. biomass two-stage reactor system according to claim 1, is characterized in that, described auxiliary reactor consists of reaction chamber and air compartment, and described reaction chamber is offered secondary air inlet, and described air compartment is offered primary air nozzle.

3. biomass two-stage reactor system according to claim 1, is characterized in that, described main reactor and/or auxiliary reactor setting have the air supply device of blast cap, and described blast cap consists of the sheathed block with air outlet opening of airduct and airduct upper end.

4. biomass two-stage reactor system according to claim 3, is characterized in that, described air supply device is provided with the air distribution plate for assembling blast cap, and connects knockout pipe at air distribution plate center.