CN208349287U - A kind of coal chemical industry solid waste utilization of resources system - Google Patents

Abstract

The utility model provides a kind of coal chemical industry solid waste utilization of resources system, including buck pipeline, clear water return wire, flue gas pipeline, first cooling line, second cooling line, predewatering device, buffer hopper, hybrid drying equipment, circulating fluidized bed boiler, buck pipeline is connected to predewatering device, predewatering device lower end is connected to clear water return wire, predewatering device leads to buffering hopper, first cooling line passes to flue gas pipeline, flue gas pipeline and buffering hopper are connected to hybrid drying equipment, total pipeline is communicated between hybrid drying equipment and circulating fluidized bed boiler, second cooling line is connected to circulating fluidized bed boiler, total pipeline is connected to circulating fluidized bed boiler, coal chemical industry solid waste utilization of resources system provided by the utility model uses the wet ash of pneumatic conveying, improve the combustion rate of wet ash, so that waste and old resource obtains It re-uses, and solves wet ash and stack bring problem of environmental pollution.

Description

A kind of coal chemical industry solid waste utilization of resources system

Technical field

The utility model relates to coal gasification apparatus fields, and in particular to a kind of coal chemical industry solid waste utilization of resources system.

Background technique

With the increasingly maturation of Coal Gasification Technology, it is becoming tight the day of petroleum resources, so that the coal chemical industry in China enters fastly Fast developing period, the coal gasification equipment based on gasification furnace promptly dominate the market.It, can be because of coal but during coal gasification Qualitative difference can be brought the problem of gasification furnace unburned carbon in flue dust excessively high (25%~40%) simultaneously, and gasification flying dust is mostly with water to coal gas Washing removing, gasification system is discharged in the flying dust and water of removing together, forms buck.

Wet dust heap mainly is made after vacuum filter removes most of water for the processing mode of buck in factory at present It puts, take out.It is wet ash accumulation form it is extremely unstable, meet water i.e. be lost, air-dry i.e. fly upward, as waste material abandon, caused by environment ask Inscribe bigger than coal washing cash more, wet ash has that humidity is big, ash content is high, calorific value is low, particle is thin, viscosity is big, and the best way is direct In boiler combustion, the bunker coal of pulverized-coal fired boiler be by raw coal after coal pulverizer wears into powdery (200 μm or so) and by First air It is blown into boiler furnace burning.It is also difficult to since the water content of wet ash is left and right 50%, after gasification using pneumatic conveying, that is, be difficult to It is blown into furnace and burns together with coal dust, and the wet grey water content after gasification is high, can absorb heat evaporation in boiler, to boiler It is unfavorable to burn, and is unfavorable for power plants generating electricity；Meanwhile even if can be by pneumatic conveying by wet ash, air dried wet ash also can be because of particle It is too thin, it can be blown away out of furnace immediately, wet ash residence time in furnace is short, burns insufficient, efficiency of combustion is still lower, wet Ash is still not fully utilized.

Utility model content

The purpose of the utility model is to provide a kind of coal chemical industry solid waste utilization of resources systems, and this system improves solid wastes The utilization rate of the wet ash of resource, and solve wet ash and stack bring problem of environmental pollution.

In order to achieve the above object, the technical solution adopted in the utility model are as follows: a kind of coal chemical industry solid waste utilization of resources system, Including buck pipeline, clear water return wire, flue gas pipeline, the first cooling line, the second cooling line, predewatering device, buffering material Bucket, hybrid drying equipment, circulating fluidized bed boiler；

The buck pipeline is connected to predewatering device, and the predewatering device lower end is connected to clear water return wire, described Predewatering device leads to buffering hopper, and first cooling line passes to flue gas pipeline, flue gas pipeline end and buffering Hopper lower end crosses and is connected to hybrid drying equipment, and wet ash grinding is provided in the hybrid drying equipment and breaks up dress It sets, total pipeline is communicated between hybrid drying equipment and circulating fluidized bed boiler, second cooling line is connected to circulation Fluidized-bed combustion boiler is provided with emulsion zone in the circulating fluidized bed boiler, is equipped with water-cooling wall in the emulsion zone, at the water-cooling wall Equipped with feed inlet, total pipeline is connected to the feed inlet of circulating fluidized bed boiler.

Further, burner is additionally provided at the feed inlet, the buffering hopper lower end is provided with measurement controller.

Further, Heisui River buffer tank, Heisui River pump are provided on the buck pipeline, the Heisui River pump is slow positioned at buck It deposits between tank and predewatering device structure.

Further, back water pump, return water buffer tank are provided on the clear water return wire, the return water buffer tank is located at back Between water pump and predewatering device.

Further, desiccant booster fan, first cooling line, the second cooling are provided on the flue gas pipeline It is cooling wind that line, which is conveyed,.

Further, the hybrid drying equipment is connected on total pipeline of circulating fluidized bed boiler and is disposed with Gate valve, plays sample device at flow measuring unit.

Further, multiple ball valves, the buck pipeline are provided on the buck pipeline and clear water return wire Be provided with multiple flanges on clear water return wire, the flue gas pipeline, the first cooling line are provided on the second cooling line Stop valve is provided with regulating valve on the flue gas pipeline and the first cooling line.

Further, blender is provided in the Heisui River buffer tank.

Further, filled with inert gas at the emulsion zone of the circulating fluidized bed boiler.

Compared with prior art, the utility model has following technical effect that coal chemical industry solid waste provided by the utility model Utilization of resources system directly synchronous with coal preparation plant can be used in combination, the link that wet ash needs to stack be simplified, by pre- Dehydration equipment separates ash wet in buck with water, then enters hybrid drying equipment drying together with flue gas, breaks up, then pass through cigarette The mode of gas conveying conveys wet ash, finally using the throat-fed from the water-cooling wall out of circulating fluidized bed boiler emulsion zone, adopts So that wet ash is burnt together with coal dust with the mode of pneumatic conveying, out of circulating fluidized bed boiler emulsion zone from water-cooling wall into Material mouth charging extends residence time of the wet ash in circulating fluidized bed boiler, improves the combustion rate of wet ash, improve wet ash Utilization rate so that solid waste resource is re-used, and solve wet ash and stack bring problem of environmental pollution.

Detailed description of the invention

Fig. 1 is the connection schematic diagram of coal chemical industry solid waste utilization of resources system described in utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail, it should be understood that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

A kind of coal chemical industry solid waste utilization of resources system, including buck pipeline 10, clear water return wire 20, flue gas pipeline 30, the first cooling line 40, the second cooling line 50, predewatering device 60, buffering hopper 70, hybrid drying equipment 80, recycle stream Fluidized bed boiler 90；

The buck pipeline 10 is connected to predewatering device 60, and 60 lower end of predewatering device is connected to clear water return wire 20, the predewatering device 60 leads to buffering hopper 70, and first cooling line 40 passes to flue gas pipeline 30, and the flue gas is defeated 30 end of line sending and buffering 70 lower end of hopper cross and are connected to hybrid drying equipment 80, in the hybrid drying equipment 80 It is provided with wet ash grinding dispersing device, is communicated with total conveying between the hybrid drying equipment 80 and circulating fluidized bed boiler 90 Line 100, second cooling line 50 are connected to circulating fluidized bed boiler 90, are provided with close phase in the circulating fluidized bed boiler 90 Area is equipped with water-cooling wall in the emulsion zone, is equipped with feed inlet 91 at the water-cooling wall, total pipeline 100 with it is ciculation fluidized The feed inlet 91 of boiler 90 is connected to.

Predewatering device 60 includes more vacuum filters, plate and frame type filter-press or centrifugal drier；It is hybrid dry Dry equipment 80 includes fluid bed dryer, pneumatic convey drier；Buck flows out from coal preparation plant, passes through buck pipeline 10 are entered in predewatering device 60 by pipeline buck, are separated ash wet in buck with clear water by predewatering device 60, Wet ash is formed into the structure that moisture content ratio is 30%~50% wet ash, wet grey output end and clear water are provided on predewatering device 60 Output end, clear water are returned to coal preparation plant by clear water return wire 20 and are re-used by clear water output end, and wet ash passes through wet Grey output end enters in buffering hopper 70, and the first cooling line 40 passes to flue gas pipeline 30, and flue gas provides strength, flue gas pipeline The 30 flue-gas temperature height conveyed, the first cooling line 40 are used to cool down to flue gas pipeline 30, avoid the flue gas of high temperature that from conveying Pipeline and other equipment scald, while the flue gas of high temperature being avoided to ignite wet ash, although flue gas is cooled down by the first cooling line 40, Also there are waste heat, 30 end of flue gas pipeline and buffering 70 lower end of hopper cross and are connected to hybrid drying equipment 80 flue gas, Flue gas pipeline 30 is delivered in hybrid drying equipment 80 together after crossing with buffering 70 lower end of hopper, hybrid drying equipment 80 pairs of wet ashes are dried, meanwhile, because flue gas is there are waste heat, flue gas can also heat up to wet ash, steam the moisture in wet ash Hair, that is, wet ash is dried in flue gas, and hybrid drying equipment 80 is dried simultaneously with flue gas, and the moisture control of wet ash is made to exist Between 5%~10%, wet ash grinder dispersing device is used to grind wet ash, beat and spread, and wet ash is made to be easy to be dried, meanwhile, it is ground It is broken, beat the wet ash spread and be easier by pneumatic conveying, it is easier to it is burned sufficiently, flue gas and wet ash by and hybrid drying equipment Total pipelines 100 of 80 connections convey, combuster in circulating fluidized bed boiler 90, and combustion chamber lower part is emulsion zone, on combustion chamber Portion is dilute-phase zone, and water-cooling wall is equipped in emulsion zone, is equipped with feed inlet 91, total pipeline 100 and circulating fluidized bed boiler at water-cooling wall 90 feed inlet 91 is connected to, and last wet ash is by the pneumatic conveying in total pipeline 100, into circulating fluidized bed boiler 90； Second cooling line 50 is connected to circulating fluidized bed boiler 90, for cooling down to encircleing before and after circulating fluidized bed boiler 90, avoids It is excessively high and damage to encircle temperature before and after circulating fluidized bed boiler 90, while recycling 90 heat loss of circulating fluidized bed boiler；Using strength The mode of conveying avoids wet ash and flies upward everywhere, pollutes environment, meanwhile, the wet ash burning of pneumatic conveying, improving wet ash ignites rate, Wet ash is set to be easier to be burned；Feed inlet 91 out of circulating fluidized bed boiler 90 emulsion zone from water-cooling wall is fed, and extends wet ash Residence time in circulating fluidized bed boiler 90 improves the combustion rate of wet ash, the utilization rate of wet ash is improved, so that waste and old Resource is re-used, and is solved wet ash and stacked bring problem of environmental pollution；Wet ash becomes after boiler combustion simultaneously At dry ash, phosphorus content is reduced, take-away market is wider, solves the problems, such as the market of wet ash.

Further, burner 92 is additionally provided at the feed inlet 91, the buffering hopper lower end is provided with metering control Device 71 processed；Easily wet ash can be lighted with burner 92, along with wet ash is pneumatic conveying, facilitate the sufficiently combustion of wet ash It burns, measurement controller 71 conveys wet ash in proportion with flue gas for controlling wet grey conveying capacity.

Further, Heisui River buffer tank 11, Heisui River pump 12 are provided on the buck pipeline 10, the Heisui River pumps 12 Between 60 structure of Heisui River buffer tank 11 and predewatering device；Heisui River buffer tank 11 is used for temporary storage buck, Heisui River pump 12 Power is provided for buck pipeline 10, buck is introduced into the caching of Heisui River buffer tank 11, is then hacked water pump 12 and is transported to pre-dehydration In equipment 60.

Further, back water pump 21, return water buffer tank 22, the return water buffer tank are provided on the clear water return wire 20 22 between back water pump 21 and predewatering device 60；When clear water passes through clear water return wire 20, it is introduced into return water buffer tank 22 Clear water in clear water return wire 20 is transported to the re-using of coal process equipment providing power by back water pump 21 by caching.

Further, desiccant booster fan 31, first cooling line 40, are provided on the flue gas pipeline 30 It is cooling wind that two cooling lines 50, which are conveyed,；To flue gas drying and pressurizeed by desiccant booster fan 31 so that flue gas with it is wet Ash is easy to be burned in circulating fluidized bed boiler 90, and the strength for generating flue gas to flue gas pressurization is big, is easy to drive wet grey flowing, Cooling wind had both been easy also to be easy the flue gas and recycle stream of recycling high temperature to flue gas and circulating fluidized bed boiler 90 cooling of high temperature The heat loss of fluidized bed boiler 90, recycling thermal energy recycle.

Further, the hybrid drying equipment 80 be connected on total pipeline 100 of circulating fluidized bed boiler 90 according to It is secondary to be provided with gate valve 102, flow measuring unit 103, play sample device 104.

It can control whether total pipeline 100 continues to convey wet ash into circulating fluidized bed boiler 90 using gate valve 102, Flow measuring unit 103 is used to control the amount that wet ash enters in circulating fluidized bed boiler 90, is sufficiently burned wet ash, plays sample device Whether 104 be turned on for control loop fluidized-bed combustion boiler 90.

Further, multiple ball valve a are provided on the buck pipeline 10 and clear water return wire 20, the buck is defeated Multiple flange b are provided in line sending 10 and clear water return wire 20, the flue gas pipeline 30, the first cooling line 40, second are cold But it is provided with stop valve c on line 50, is provided with regulating valve d on the flue gas pipeline 30 and the first cooling line.

Multiple ball valve a are set in buck pipeline 10, make buck by being easy when other equipment in buck pipeline 10 It is controlled, ball valve a is set in clear water return wire 20, keep clear water controlled by being easy when other equipment in clear water return wire 20 System, flange b are used for connecting pipe and various equipment, valve, and the effect of stop valve c is cutting channel, are allowed to not circulate, regulating valve D is used to adjust the flow in channel, adjusts the size of the conveying capacity in channel.

Further, blender 11a is provided in the Heisui River buffer tank 11；Blender 11a can make Heisui River buffer tank Wet ash is not easy to precipitate in the buck cached in 11, it is ensured that wet ash will not be got lodged at Heisui River buffer tank 11.

Further, filled with inert gas at the emulsion zone of the circulating fluidized bed boiler 90；Increasing inert gas can add Flow perturbation at the emulsion zone of strong circulating fluidized bed boiler 90 improves mobility of the wet ash in circulating fluidized bed boiler 90, extends Wet residence time of the ash in circulating fluidized bed boiler 90, make wet ash in circulating fluidized bed boiler 90 can with full combustion, meanwhile, increase Add inert gas that can reduce the discharge of the toxic and harmful gas such as the gas of the gas of carbon compound, nitrogen compound, reduces ring Border pollution.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (9)

1. a kind of coal chemical industry solid waste utilization of resources system, it is characterised in that: including buck pipeline (10), clear water return wire (20), flue gas pipeline (30), the first cooling line (40), the second cooling line (50), predewatering device (60), buffering hopper (70), hybrid drying equipment (80), circulating fluidized bed boiler (90)；

The buck pipeline (10) is connected to predewatering device (60), predewatering device (60) the lower end connection clear water reflux Line (20), the predewatering device (60) lead to buffering hopper (70), and first cooling line (40) passes to flue gas pipeline (30), flue gas pipeline (30) end and buffering hopper (70) lower end cross and are connected to hybrid drying equipment (80), Wet ash grinding dispersing device, hybrid drying equipment (80) and recirculating fluidized bed are provided in the hybrid drying equipment (80) It is communicated between boiler (90) total pipeline (100), second cooling line (50) is connected to circulating fluidized bed boiler (90), institute It states and is provided with emulsion zone in circulating fluidized bed boiler (90), water-cooling wall is equipped in the emulsion zone, is equipped with charging at the water-cooling wall Mouth (91), total pipeline (100) are connected to the feed inlet (91) of circulating fluidized bed boiler (90).

2. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the feed inlet (91) Place is additionally provided with burner (92)；Buffering hopper (70) lower end is provided with measurement controller (71).

3. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the buck pipeline (10) Heisui River buffer tank (11), Heisui River pump (12) are provided on, Heisui River pump (12) is located at Heisui River buffer tank (11) and pre- takes off Between wetting system (60) structure.

4. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the clear water return wire (20) back water pump (21), return water buffer tank (22) are provided on, the return water buffer tank (22) is located at back water pump (21) and pre- de- Between wetting system (60).

5. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the flue gas pipeline (30) it is provided on desiccant booster fan (31), first cooling line (40), the second cooling line (50) is conveyed is cold But wind.

6. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the hybrid drying Equipment (80) is connected on total pipeline (100) of circulating fluidized bed boiler (90) and is disposed with gate valve (102), flow measuring unit (103), sample device (104) are played.

7. a kind of coal chemical industry solid waste utilization of resources system according to claim 1, it is characterised in that: the buck pipeline (10) and on clear water return wire (20) multiple ball valves (a), the buck pipeline (10) and clear water return wire (20) are provided with On be provided with multiple flanges (b), the flue gas pipeline (30), the first cooling line (40), the second cooling line are all provided on (50) It is equipped with stop valve (c), is provided with regulating valve (d) on the flue gas pipeline (30) and the first cooling line.

8. a kind of coal chemical industry solid waste utilization of resources system according to claim 3, it is characterised in that: the Heisui River buffer tank (11) blender (11a) is provided in.

9. a kind of coal chemical industry solid waste utilization of resources system according to claim 3, it is characterised in that: the ciculation fluidized pot Filled with inert gas at the emulsion zone of furnace (90).