High temperature dust raw gas cold filtration pyrolysis installationTechnical field
The present invention relates to technical field of coal chemical industry, be specifically related to a kind of high temperature dust raw gas cold filtration pyrolysis installation.
background technology
Chinese coal reserves account for 12% of worldwide coal resource, and China's low-rank coal standing stock account for about 50% of coal reserves, and output accounts for 30% of current total amount.See by the forming age of CHINESE COAL, maximum with Jurassic Coal reserves, account for the whole nation and verified about 45% of retained reserve, the coal formed by these epoch is except only a few hard coal, and all the other great majority are the low-rank coal such as brown coal, long-flame coal, non-caking coal and weakly caking coal.In areal distribution, reserves major part concentrates on the Inner Mongol, Shaanxi, Xinjiang, Gansu, Shanxi, six, Ningxia province (district), and these areas are places that China's water resources is seriously deficient, constrain to a certain extent and utilize these low-rank coal to carry out processing upgrading industrial expansion.
At present a lot of Coal dressing equipment cannot accomplish good utilization for the thermal zone dirt coal gas produced, and then the utilization ratio of coal and the efficiency of production that reduce.
Present stage many coal productions flow process can not accomplish good utilization for the high temperature dust coal gas produced: dust-laden in high temperature dust coal gas, and dust removal installation effect is undesirable, to environment time emptying; Containing higher heat in high temperature dust coal gas, cannot be good be used, reduces the utilization ratio of production efficiency and coal.
Summary of the invention
The invention provides a kind of high temperature dust raw gas cold filtration pyrolysis installation that can carry out dedusting and heat recovery and utilization to the dust-laden coal gas of high temperature.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of high temperature dust raw gas cold filtration pyrolysis installation, comprising:
Upright furnace body of heater, the top of this body of heater and bottom offer opening for feed and discharge port respectively, and body of heater upper end is provided with venting port, and body of heater lower circumferential side is at least evenly equipped with a pair inlet mouth; Described opening for feed place is provided with feeder, and this feeder comprises rotary feeder, and the import of rotary feeder is communicated with hopper, and the outlet of rotary feeder is communicated with material uniform device; Described inlet mouth place is provided with multiple air distribution plate, is formed with the ventilation hole under being tilted between adjacent air distribution plate.
Described discharge outlet is provided with discharge mechanism.
Described material uniform device is the material guiding pipe stretching into furnace interior.Rotary feeder outlet connects material uniform device, gos deep into furnace interior, material can be made evenly to fall, and improves cold filtration effect.
Described inboard wall of furnace body is provided with thermofin, and this thermofin comprises the liner schamotte brick and adiabatic insulation material layer that set gradually, reduces heat radiation, effectively can improve the utilization ratio of high temperature dust coal gas heat.
Described air distribution plate is I-shape construction, and the angle of inclination of described ventilation opening is 60 degree.By effectively for providing downward inlet mouth in stove, the adverse current of coal charge can effectively can be prevented after coal gas enters after the combination arrangement of this air distribution plate.
From above technical scheme, the present invention adopts high temperature dust coal gas and beans to carry out heat exchange, add the recycling to heat while the cooling of high temperature dust coal gas, and the dust removing effects to high temperature dust coal gas can be improved, effectively reduce the pollution to environment; Inlet mouth is provided with air distributor structure and forms the ventilation hole under being tilted to, and makes the coal gas entered in body of heater form the air-flow of even convective rising, effectively can prevent the adverse current of coal charge.
Accompanying drawing explanation
Fig. 1 is the structural representation of high temperature dust raw gas cold filtration pyrolysis installation of the present invention, and shows the flow direction of coal gas.
In figure: 100, body of heater, 101, beans, 102, high temperature dust coal gas, 103, coal gas is cooled, 110, opening for feed, 120, discharge port, 130, venting port, 140, inlet mouth, 200, feeder, 210, rotary feeder, 220, hopper, 230, material uniform device, 300, air distribution plate, 310, ventilation hole, 400, discharge mechanism, 500, thermofin, 510, liner schamotte brick, 520, adiabatic insulation material layer.
Embodiment
Below in conjunction with accompanying drawing 1, a kind of preferred implementation of the present invention is described in detail.
The invention provides a kind of high temperature dust raw gas cold filtration pyrolysis installation, the effect dust-laden coal gas of high temperature being carried out to dedusting and heat recovery and utilization can be provided.
Described cold filtration pyrolysis installation comprises upright furnace body of heater 100, and this upright furnace is used for pyrolysis beans.The top of described body of heater and bottom offer opening for feed 110 and discharge port 120 respectively, and body of heater upper end is provided with venting port 130, and body of heater lower circumferential side is at least evenly equipped with a pair inlet mouth 140.
Described opening for feed 110 place is provided with feeder 200, this feeder comprises rotary feeder 210, the import of rotary feeder is communicated with hopper 220, the outlet of rotary feeder is communicated with material uniform device 230, described material uniform device is the material guiding pipe stretching into furnace interior, and beans can import in stove by this material guiding pipe uniformly.The beans entering feeder can carry out protection against oxidation with waste gas, and waste gas adopts general rare gas element.At hopper, place is also provided with dedusting mechanism, by dust removing in beans, can improve the filter effect of whole equipment.
Described inlet mouth 140 place is provided with multiple air distribution plate 300, is formed with the ventilation hole 310 under being tilted between adjacent air distribution plate, and air distribution plate described in the present embodiment is I-shape construction, and the angle of inclination of described ventilation opening is 60 degree.
Described inboard wall of furnace body is provided with thermofin 500, and this thermofin comprises the liner schamotte brick 510 and adiabatic insulation material layer 520 that set gradually.
Be as follows the present invention for the principle of work in coal gas circulation coal wholegrain radial sector pyrolytic process:
The beans 101 come through preheating hierarchy system enters hopper 220, material uniform device 230 is arrived by rotary feeder 210, material falls in stove uniformly, because material uniform device stretches into furnace interior, dirt gas and coal particle is effectively made to have carried out layering, dirt gas is derived by external dedusting mechanism in hopper, more emptying after desulfurization, can effectively reduce the pollution to environment.Simultaneously, the high temperature dust coal gas 102 carrying out self-boiling pyrolysis oven enters in stove by inlet mouth 140, because inlet mouth is uniform body of heater one week, and pass through the effect of air distribution plate 300 and downward 60 ° of ventilation holes 310, coal gas forms convection current and rises in stove, with the buckwheat coal granular layer generation heat exchange through falling from material uniform device.Cooling coal gas 103 after heat exchange, purification is discharged by venting port 130, and beans is when entering the bottom of body of heater, because the temperature of himself also reaches pyrolysis temperature through heat exchange, pyrolysis can be there is, the high-temperature semi-coke formed discharges body of heater by discharge mechanism 400, and then completes the process of high temperature dust raw gas cold filtration pyrolysis.
The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.