CN105130162A - Recycling method for treating sludge by tank furnace waste gas - Google Patents
Recycling method for treating sludge by tank furnace waste gas Download PDFInfo
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- CN105130162A CN105130162A CN201510521797.4A CN201510521797A CN105130162A CN 105130162 A CN105130162 A CN 105130162A CN 201510521797 A CN201510521797 A CN 201510521797A CN 105130162 A CN105130162 A CN 105130162A
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Abstract
The invention relates to a recycling method for treating sludge by tank furnace waste gas. The method mainly comprises the following steps: a suction fan sends waste gas to a waste heat drier, wet sludge is pumped to the waste heat drier through a sludge pump, the waste gas and the wet sludge are dried in the sludge drier, the sludge enters a first conveying mechanism from the waste heat drier, the waste gas enters a dust remover from the waste heat drier, the dust remover purifies the waste gas, dust enters a second conveying mechanism, and the waste gas enters a waste gas treatment system to be deeply treated and discharged; the water-containing sludge discharged by the waste heat drier and the cyclone dust remover is sent to a drier, the drier dries the sludge, water vapor is discharged through an exhaust fan, the dried sludge forms a dry material, the dry material is crushed into dry powder through a crusher, the dry powder is treated by a rotary powder screening machine, small-grain dry powder enters a dry powder storage tank to be stored, and large-grain dry material is conveyed to the drier again through a third conveying mechanism to be circularly treated. The method provided by the invention is reasonable in design, low in drying cost, high in resource utilization rate, high in recycling value and free of secondary pollution.
Description
Technical field
The present invention relates to a kind of tank furnace waste gas pollution control and treatment sludge method, particularly a kind of tank furnace waste gas pollution control and treatment mud reuse method.
Background technology
Containing materials such as agalmatolite, fluorite, saltcake in the admixtion that cell furnace is used, the fuel adopted in combustion melting process is mainly Sweet natural gas, liquefied petroleum gas (LPG) etc.Can produce in process of production containing flue dust, SO
2, the waste gas of the pollutents such as HF, NOx.The emission concentration be up to state standards to make pollutent, the general wet absorption method that adopts is administered waste gas.Can produce containing CaSO in governance process
3, CaSO
4, CaF
2deng the water-containing sludge of material, mud water ratio after board and frame machine dehydration is reduced to 45 ~ 55%.Measure mainly landfill and the raw material of building materials utilization that current sludge disposal is generally taked.From the angle of resource, first it is considered that the utilization of material, it is exactly so compost; Then it is considered that the utilization of energy, be exactly so mummification+burning; Unserviceable selection is exactly landfill, but land occupation resource.The modal processing mode in current Europe is exactly compost and anhydration and incineration two kinds of routes.
Cell furnace waste gas pollution control and treatment mud, due to without calorific value, is worth without organism compost, and the method taked at present is that landfill and material of construction utilize.The shortcomings such as aforementioned two kinds of methods exist secondary pollution, and recovery value is low, and expense is high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of tank furnace waste gas pollution control and treatment mud reuse method, and the economic worth realizing mud utilizes, and reduces environmental pollution.
The present invention solves the problems of the technologies described above adopted technical scheme and comprises:
The method of a kind of tank furnace waste gas pollution control and treatment mud reuse, tank furnace waste gas pollution control and treatment mud reclamation set is adopted to carry out, described tank furnace waste gas pollution control and treatment mud reclamation set comprises exhaust pipeline, wet mud storage tank, sludge pump, residual heat drying machine, fly-ash separator, suction fan, first transfer mechanism, second conveyor structure, drying machine, disintegrating machine, rotate powder shifter, 3rd transfer mechanism, centrifugal blower, dry powder storage tank, waste gas pollution control and treatment system, described exhaust pipeline, suction fan, residual heat drying machine, fly-ash separator, waste gas pollution control and treatment system is communicated with successively, wet mud storage tank, sludge pump, residual heat drying machine is communicated with successively, first transfer mechanism is set between residual heat drying machine and drying machine, second conveyor structure is set between fly-ash separator and drying machine, rotate between powder shifter and drying machine and the 3rd transfer mechanism is set, drying machine, disintegrating machine, rotate powder shifter, dry powder storage tank configures successively, drying machine is communicated with steam discharge blower fan, tank furnace waste gas pollution control and treatment mud reuse method mainly comprises the following steps:
Waste gas is delivered to residual heat drying machine by exhaust pipeline by suction fan, be stored in wet mud in wet mud storage tank by sludge pumping to residual heat drying machine, waste gas and wet mud adverse current in sludge dryer is run, the waste heat in waste gas is utilized to take away the moisture of wet mud, mud enters the first transfer mechanism from residual heat drying machine, waste gas enters fly-ash separator from residual heat drying machine, fly-ash separator collects the dust taken out of from residual heat drying machine of waste gas and purifying exhaust air, the dust collected enters second conveyor structure, and waste gas discharges after entering the process of waste gas pollution control and treatment system depth again;
The water-containing sludge that residual heat drying machine and tornado dust collector are discharged is delivered to drying machine by the first transfer mechanism and second conveyor structure respectively, high-temperature steam is passed in drying machine, drying machine utilizes the moisture in continuously drying with steam evaporation mud to form water vapor, water vapor is discharged after being extracted out by steam discharge blower fan, the dry material that water ratio is lower is formed after drying sludge, dry material is fractured into dry powder by disintegrating machine, dry powder is after rotating powder shifter, the dry powder that particle is little enters dry powder storage tank and stores, the relatively large dry material of particle delivers to drying machine again by the 3rd transfer mechanism.
Suction fan of the present invention, steam discharge blower fan are centrifugal blower.
First transfer mechanism of the present invention, second conveyor structure and the 3rd transfer mechanism are rotary conveyor.
Fly-ash separator of the present invention is tornado dust collector.
Drying machine of the present invention is tray drier.
Spent air temperture of the present invention is at 150 ~ 220 degrees Celsius.
By the oven dry in above two stages with shatter, wet moisture percentage in sewage sludge significantly reduces, and reaches the condition of reuse, and the less dry powder of particle is stored in dry powder storage tank stand-by as raw materials for production.
The present invention is reasonable in design, brief and practical, and have residual heat drying cost low, transportation cost is low, and resource utilization is high, and reuse is worth high, the advantages such as non-secondary pollution.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the present invention.
Embodiment
See Fig. 1, mud reuse in the admixtion of kiln, is realized resource circulation utilization by the embodiment of the present invention.
Tank furnace waste gas pollution control and treatment mud reclamation set comprises: tank furnace waste heat waste gas (hereinafter referred to as waste gas, temperature 150 ~ 220 DEG C) pipeline A, wet mud storage tank B, sludge pump C, residual heat drying machine D, tornado dust collector E, suction fan F, the first rotary conveyor G, the second rotary conveyor H, tray drier I, disintegrating machine J, rotation powder shifter K, the 3rd rotary conveyor L, steam discharge blower fan M, dry powder storage tank N, waste gas pollution control and treatment system O.
Mud reuse method divides two stages to carry out.
Waste gas is delivered to residual heat drying machine D exhaust gas entrance by exhaust pipeline A by first stage: suction fan F, the wet mud be stored in wet mud storage tank B delivers to the opening for feed of residual heat drying machine D by sludge pump C, waste gas and wet mud adverse current in sludge dryer D is run, the waste heat in waste gas is utilized to take away the moisture of wet mud, wet moisture percentage in sewage sludge is reduced to about about half from 45 ~ 55%, mud enters the first rotary conveyor G from the discharge port of residual heat drying machine D, waste gas enters tornado dust collector E from the waste gas outlet of residual heat drying machine D, tornado dust collector E collects the dust taken out of from residual heat drying machine D of waste gas and purifying exhaust air, the dust collected enters the second rotary conveyor H, waste gas discharges after entering waste gas pollution control and treatment system 0 advanced treatment again.
Subordinate phase: the water-containing sludge that the water ratio that residual heat drying machine D and tornado dust collector E discharge by the first rotary conveyor G and the second rotary conveyor H is reduced to about half by original 45-55% delivers to steam tray drier I, high-temperature steam is passed in tray drier I, tray drier I utilizes the moisture in continuously drying with steam evaporation mud to form water vapor, water vapor is discharged after being extracted out by steam discharge blower fan M, the dry material that water ratio is lower is formed after drying sludge, dry material is fractured into dry powder by disintegrating machine J, dry powder is after rotating powder shifter K, the dry powder that particle is little enters dry powder storage tank N and stores, the relatively large dry material of particle is delivered to tray drier I(by the 3rd rotary conveyor K and is also delivered to tray drier I by the first rotary conveyor G), proceed to dry and shatter until all reach the dry powder requirement of required granular size.Required for dry powder, granular size is arranged according to actual demand, and the present embodiment is below 60 orders.
By the oven dry in above two stages with shatter, wet moisture percentage in sewage sludge significantly reduces, and reaches the condition of reuse, and the less dry powder of particle is stored in dry powder storage tank N stand-by as raw materials for production.
Adopt apparatus of the present invention and method to carry out the reuse of tank furnace waste gas pollution control and treatment mud, have residual heat drying cost low, transportation cost is low, resource utilization is high, and reuse is worth high, the advantages such as non-secondary pollution, industrial production reality can be widely used in, there is good use value.
The present invention has following design feature:
1. utilize the not recycling residual heat drying mud in tank furnace waste gas, reduce energy loss, reduce reuse cost;
2. tank furnace spent air temperture controls between 150 ~ 220 degrees Celsius, has both possessed the heat of drying required for mud, and can prevent again the generation of exhaust dew point;
3. about moisture percentage in sewage sludge is dried extremely original half from initial 45 ~ 55% by first stage regulation waste gas, object reduces the condensation of corrosive contaminants and the increase of dust in waste gas, protection processing unit, not by the corrosion of condensation acid solution, does not produce the secondary pollutions such as dust; The dewatered sludge reuse that subordinate phase is produced, to admixtion, uses as raw materials for production, achieves resource circulation utilization, achieve considerable economic worth.
Simple deformation or the equivalence of every design concept of the present invention are replaced, and should think and fall into protection scope of the present invention.
Claims (6)
1. a tank furnace waste gas pollution control and treatment mud reuse method, adopts tank furnace waste gas pollution control and treatment mud reclamation set to carry out, it is characterized in that: described tank furnace waste gas pollution control and treatment mud reclamation set comprises exhaust pipeline, wet mud storage tank, sludge pump, residual heat drying machine, fly-ash separator, suction fan, first transfer mechanism, second conveyor structure, drying machine, disintegrating machine, rotate powder shifter, 3rd transfer mechanism, centrifugal blower, dry powder storage tank, waste gas pollution control and treatment system, described exhaust pipeline, suction fan, residual heat drying machine, fly-ash separator, waste gas pollution control and treatment system is communicated with successively, wet mud storage tank, sludge pump, residual heat drying machine is communicated with successively, arranges the first transfer mechanism between residual heat drying machine and drying machine, arranges second conveyor structure between fly-ash separator and drying machine, rotates between powder shifter and drying machine and arranges the 3rd transfer mechanism, drying machine, disintegrating machine, rotate powder shifter, dry powder storage tank configures successively, and drying machine is communicated with steam discharge blower fan, and tank furnace waste gas pollution control and treatment mud reuse method mainly comprises the following steps:
Waste gas is delivered to residual heat drying machine by exhaust pipeline by suction fan, be stored in wet mud in wet mud storage tank by sludge pumping to residual heat drying machine, waste gas and wet mud adverse current in sludge dryer is run, the waste heat in waste gas is utilized to take away the moisture of wet mud, mud enters the first transfer mechanism from residual heat drying machine, waste gas enters fly-ash separator from residual heat drying machine, fly-ash separator collects the dust taken out of from residual heat drying machine of waste gas and purifying exhaust air, the dust collected enters second conveyor structure, and waste gas discharges after entering the process of waste gas pollution control and treatment system depth again;
The water-containing sludge that residual heat drying machine and tornado dust collector are discharged is delivered to drying machine by the first transfer mechanism and second conveyor structure respectively, high-temperature steam is passed in drying machine, drying machine utilizes the moisture in continuously drying with steam evaporation mud to form water vapor, water vapor is discharged after being extracted out by steam discharge blower fan, the dry material that water ratio is lower is formed after drying sludge, dry material is fractured into dry powder by disintegrating machine, dry powder is after rotating powder shifter, the dry powder that particle is little enters dry powder storage tank and stores, the relatively large dry material of particle delivers to drying machine again by the 3rd transfer mechanism.
2. tank furnace waste gas pollution control and treatment mud reuse method according to claim 1, is characterized in that: described spent air temperture is at 150 ~ 220 degrees Celsius.
3. tank furnace waste gas pollution control and treatment mud reuse method according to claim 1, is characterized in that: described suction fan, steam discharge blower fan are centrifugal blower.
4. tank furnace waste gas pollution control and treatment mud reuse method according to claim 1, is characterized in that: described first transfer mechanism, second conveyor structure, the 3rd transfer mechanism are rotary conveyor.
5. tank furnace waste gas pollution control and treatment mud reuse method according to claim 1, is characterized in that: described fly-ash separator is tornado dust collector.
6. tank furnace waste gas pollution control and treatment mud reuse method according to claim 1, is characterized in that: described drying machine is tray drier.
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| CN201510521797.4A CN105130162B (en) | 2015-08-24 | 2015-08-24 | A kind of tank furnace waste gas pollution control and treatment sludge reuse method |
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| CN201510521797.4A CN105130162B (en) | 2015-08-24 | 2015-08-24 | A kind of tank furnace waste gas pollution control and treatment sludge reuse method |
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| CN105130162B CN105130162B (en) | 2017-07-21 |
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| CN102190413B (en) * | 2011-03-24 | 2012-07-04 | 华新环境工程有限公司 | Method of integratedly utilizing sludge pretreatment and cement kiln, and system thereof |
| CN102503073A (en) * | 2011-11-29 | 2012-06-20 | 曾秀仪 | Thermal drying method for sludge |
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