CN208566732U - A kind of boiler combustion bagasse drying system - Google Patents
A kind of boiler combustion bagasse drying system Download PDFInfo
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- CN208566732U CN208566732U CN201820170215.1U CN201820170215U CN208566732U CN 208566732 U CN208566732 U CN 208566732U CN 201820170215 U CN201820170215 U CN 201820170215U CN 208566732 U CN208566732 U CN 208566732U
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Abstract
The utility model discloses a kind of boiler combustion bagasse drying systems, including medium-pressure boiler, Turbo-generator Set, gas turbine exhaust gas main pipe, Desuperheating device；Wherein, the outer wall of gas turbine exhaust gas main pipe arranges spiral conveying groove, medium pressure boiler is for steam to Turbo-generator Set, Turbo-generator Set transmission steam gives gas turbine exhaust gas main pipe, steam circulates from the interlayer of spiral conveying groove and the outer wall of gas turbine exhaust gas main pipe, bagasse enters helicla flute one end by rotary type beater from steam counter-flow direction, it is rotated by the rotation of helicla flute, bagasse is driven to exchange heat in helicla flute two sides and bottom, moisture content is evaporated, desuperheat is for sugar refining technology gas in last steam inflow Desuperheating device.The utility model has recycled the loss of steam temperature reducing, make full use of the hyperthermia radiation source of superheated steam, it successfully solves bagasse moisture drying technical problem, heat economy benefit to sugar refinery and the social benefit of environmentally friendly soot emissions is played and its important energy-saving meaning.
Description
Technical field
The utility model relates to biomass fuel technical field of drying, more particularly to a kind of dry system of boiler combustion bagasse
System.
Background technique
The area cane sugar manufacture industry Shu Wo pillar industry, the cane sugar factory being distributed in area have more than 100 families, the boiler base of configuration
It is entirely biomass boiler in sheet, fuel mainly based on bagasse (sugarcane marrow), is required by environment protection emission, present cane sugar factory
Boiler operatiopn, which is not mixed generally, combusts coal.Cane sugar factory is big power consumer, in twentieth century five, the sixties, the enterprise of cane sugar factory
Industry man generally believes: using bagasse as fuel, not burning up left can not also be handled in sugar refinery.Due to bagasse papermaking, fibreboard etc.
The development of comprehensive utilization project, bagasse are turned waste into wealth, and boiler thermal efficiency is improved, and reduce boiler combustible material consumption, improve bagasse
Packing rate is current cane sugar factory Energy Conservation direction.
For cane sugar factory biomass boiler, it is low that the bagasse moisture content height of burning will cause fire box temperature, burns endless
Entirely, more using combustion air, exhaust smoke level is big, and air-introduced machine easily draws aqueous vapor, and air piping and air door, blade is caused easily to get rusty, addle,
It reasonably controls into furnace bagasse moisture content, it is possible to reduce the quantity combusted of boiler improves boiler combustion efficiency.Just because of these sugarcanes
The presence of pulp water part questions and prospect, causes scientific research and the common concern of sugar manufacturing industry, and before more than ten years, the country also carries out sugarcane
Slag dry research and practical application, but it is unreasonable due to designing, and technology is immature, the low easy blocking of safety coefficient, dry effect
The reasons such as fruit difference and deactivate.The technologies such as heated-air drying, flue gas drying are generallyd use at home for the dry technology of bagasse at present,
But effect income is little.
Utility model content
In view of this, being satisfied with size stream the purpose of the utility model is to provide a kind of boiler combustion bagasse drying system
The bagasse of amount is dry, which makes full use of the loss heat of steam temperature reducing, pass through the bagasse dry technology of the utility model, energy
Bagasse moisture content is successfully reduced by 10 percentage points or so from existing 48% or so, to sugar refinery boiler it is energy-saving play and
Its main function.The moisture content decline of bagasse burning simultaneously, it is possible to reduce flue dust water content reduces the harm of fan belt water, to ring
It protects discharge and also functions to certain social benefit.
The system that the utility model is taken is:
A kind of boiler combustion bagasse drying system, including medium-pressure boiler, Turbo-generator Set, gas turbine exhaust gas main pipe, subtract
Warm device；Wherein, the outer wall of gas turbine exhaust gas main pipe arranges spiral conveying groove, and medium pressure boiler is for steam to steam turbine generator
Group, Turbo-generator Set transmission steam give gas turbine exhaust gas main pipe, and steam is outer from spiral conveying groove and gas turbine exhaust gas main pipe
It circulates in the interlayer of wall, bagasse enters spiral conveying groove one end by rotary type beater from steam counter-flow direction, passes through spiral
The rotation of delivery chute rotates, and bagasse is driven to exchange heat in spiral conveying groove two sides and bottom, evaporates moisture content, and last steam flows into desuperheat
Desuperheat is for sugar refining technology gas in device.
Preferably, the gas turbine exhaust gas main pipe is two groups.
Preferably, the spiral conveying groove top seal, heat preservation, and it is provided with air outlet at top, after bagasse evaporation
Steam discharge, steam after evaporation collects by closed container, is evacuated to condensing recovery by blower.
Preferably, bagasse carrier, bagasse and adjusting after conveying is dry are provided with outside the gas turbine exhaust gas main pipe
Bagasse amount afterwards is returned to together into furnace sugarcane band, and then is delivered in boiler.
Preferably, the bagasse exchanges heat in spiral conveying groove two sides and bottom specifically: bagasse and turbine discharge are female
Pipeline radiation source contact face contact exchanges heat.
The utility model has the advantages that: the system of the utility model has recycled the loss of steam temperature reducing, makes full use of overheat
The hyperthermia radiation source of steam successfully solves bagasse moisture drying technical problem, heat economy benefit to sugar refinery and to environmental protection
The social benefit of soot emissions plays and its important energy-saving meaning.
Detailed description of the invention
Fig. 1 is the process flow chart of the utility model embodiment system；
Fig. 2 is the schematic cross-section of gas turbine exhaust gas main pipe in the utility model embodiment system.
In figure, 1, exhaust outlet；2, spiral conveying groove rotation conveying bagasse；3, bagasse and blow-off line radiation source contact surface；
4, turbine discharge main pipe flow area；5, medium-pressure boiler；6, Turbo-generator Set；7, gas turbine exhaust gas main pipe；8, desuperheat fills
It sets；9, spiral conveying groove；10, rotary type beater；11, bagasse carrier.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Embodiment
A kind of boiler combustion bagasse drying system, as shown in Figure 1, including medium-pressure boiler (5), Turbo-generator Set (6), vapour
Turbine exhaust main pipe (7), Desuperheating device (8)；Wherein, the outer wall of gas turbine exhaust gas main pipe (7) arranges spiral conveying groove (9), institute
It states medium-pressure boiler (5) to give Turbo-generator Set (6) for steam, Turbo-generator Set (6) transmission steam gives gas turbine exhaust gas main pipe
(7), steam circulates from the interlayer of spiral conveying groove (9) and the outer wall of gas turbine exhaust gas main pipe (7), and bagasse is from steam counter-flow side
Enter spiral conveying groove (9) one end to by rotary type beater (10), is rotated, driven by the rotation of spiral conveying groove (9)
Bagasse exchanges heat in spiral conveying groove (9) two sides and bottom, evaporates moisture content, desuperheat is for work of refining sugar in last steam inflow Desuperheating device
Skill gas.
The gas turbine exhaust gas main pipe (7) is two groups.
Described spiral conveying groove (9) top seal, heat preservation, and it is provided with air outlet at top, to the water after bagasse evaporation
Vapour discharge, the steam after evaporation are collected by closed container, are evacuated to condensing recovery by blower.
It is provided with bagasse carrier (11) outside the gas turbine exhaust gas main pipe (7), bagasse and adjusting after conveying is dry
Bagasse amount afterwards is returned to together into furnace sugarcane band, and then is delivered in boiler.
As shown in Fig. 2, the bagasse exchanges heat in spiral conveying groove (9) two sides and bottom specifically: bagasse and steam turbine
Steam discharge main pipe (7) pipeline radiation source contact face contact exchanges heat.
Cane sugar factory in process of production, (the desuperheat other than purging sieves sugared technique and the direct-furnish superheated steam of boiler can be used
It is decompressed to 180 DEG C of 0.6MPa, temperature), remaining sugar refining technology all uses the saturated vapor after desuperheat is depressured with vapour unit
(pressure 0.2MPa or so, 130 DEG C of temperature or so), sugar refining technology vapour from Turbo-generator Set power generation after displacement and
The initial steam amount (pressure and temperature reducing) that boiler directly supplements.There are two types of the dynamic configurations of the heat that sugar manufacturing industry uses at present:
1, middle press furnace (boiler parameter pressure 3.82MPa, 450 DEG C of temperature；Turbo-generator Set initial steam pressure 3.43MPa,
435 DEG C of throttle (steam) temperature --- exhaust steam pressure 0.49MPa, 190 DEG C of exhaust temperature).
2, secondary middle press furnace (boiler parameter pressure 2.45MPa, 400 DEG C of temperature；Turbo-generator Set initial steam pressure
2.35MPa, 390 DEG C of throttle (steam) temperature --- exhaust steam pressure 0.294MPa, 220 DEG C of exhaust temperature).
From described above it is recognised that no matter cane sugar factory configures the boiler of what parameter type, turbine discharge temperature
All at 200 DEG C (superheated steams), before entering evaporation I effect steam drum will desuperheat could use (micro- superheated steam to 130 DEG C or so
Or saturated vapor), then there is a larger desuperheat loss when 200 DEG C (superheated steams) are cooled to 130 DEG C, although subtracting
The desuperheating water of spray atomizing theoretically will become steam when warm, but in actual production, be essentially all a large amount of hydrophobic outflows,
Existed based on the two factors, is had developed using turbine discharge pipeline outer wall radiant heat drying bagasse moisture content, i.e. the present embodiment
System stop 30 second time in turbine discharge pipeline outer wall, moisture content is reduced to 35% through testing the bagasse of moisture content 48%
Left and right.Since the scale in each sugar refinery is different, needs the bagasse amount of sugarcane at 20-100 ton/hours, take stage drying
Bagasse can also increase heat transfer area realization, calculate through my company and test data shows the turbine discharge that each sugar refinery configures
Flow can meet bagasse drying, moisture content decline 10% or so, and turbine discharge temperature only declines about 15 DEG C or so, is still in
Superheated steam state, does not have any impact.
The different needs of bagasse dry amount and sugarcane moisture content in order to meet each sugar refinery, my company design turbine discharge temperature
Variable of the degree loss at 5 DEG C -25 DEG C, bagasse amount adjust bagasse amount size or increase at 20 ton/hours -150 ton/hours
Blow-off line heat transfer area guarantees that the dry of bagasse requires.
Claims (5)
1. a kind of boiler combustion bagasse drying system, it is characterised in that including medium-pressure boiler, Turbo-generator Set, gas turbine exhaust gas
Main pipe, Desuperheating device；Wherein, the outer wall of gas turbine exhaust gas main pipe arranges spiral conveying groove, and medium pressure boiler is for steam to vapour
Turbine generator group, Turbo-generator Set transmission steam give gas turbine exhaust gas main pipe, and steam is from spiral conveying groove and gas turbine exhaust gas
It circulating in the interlayer of the outer wall of main pipe, bagasse enters spiral conveying groove one end by rotary type beater from steam counter-flow direction,
It is rotated by the rotation of spiral conveying groove, bagasse is driven to exchange heat in spiral conveying groove two sides and bottom, evaporate moisture content, last steam
Desuperheat is for sugar refining technology gas in inflow Desuperheating device.
2. system according to claim 1, it is characterised in that the gas turbine exhaust gas main pipe is two groups.
3. system according to claim 1, it is characterised in that the spiral conveying groove top seal, heat preservation, and pushing up
Portion is provided with air outlet, is discharged to the steam after bagasse evaporation, and the steam after evaporation is collected by closed container, is taken out by blower
To condensing recovery.
4. system according to claim 1, it is characterised in that be provided with bagasse conveying outside the gas turbine exhaust gas main pipe
Band, the bagasse after conveying is dry and the bagasse amount after adjusting are returned to together into furnace sugarcane band, and then are delivered in boiler.
5. system according to claim 1, it is characterised in that the bagasse exchanges heat in spiral conveying groove two sides and bottom
Specifically: bagasse exchanges heat with turbine discharge main pipe pipeline radiation source contact face contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820170215.1U CN208566732U (en) | 2018-01-31 | 2018-01-31 | A kind of boiler combustion bagasse drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820170215.1U CN208566732U (en) | 2018-01-31 | 2018-01-31 | A kind of boiler combustion bagasse drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208566732U true CN208566732U (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201820170215.1U Active CN208566732U (en) | 2018-01-31 | 2018-01-31 | A kind of boiler combustion bagasse drying system |
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| CN (1) | CN208566732U (en) |
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2018
- 2018-01-31 CN CN201820170215.1U patent/CN208566732U/en active Active
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