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China
N ° de modèle:
Justfine-1004
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Commande minimale:
1 Set
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Personne àcontacter Jenny
Shanghai, Shanghai
Hazardous Waste Activated Carbon Regeneration Plant
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Saturated activated carbons with no more capability of absorption
are wastes
which have been specified as Hazardous Wastes by the national
environmental
conservation authority, and must be recycled by competent recycling
companies
for reuse to reduce secondary purchase cost of related
business.
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The company currently manufactures furnace with a diameter of 1
.9m,
2.2m, 2.4m or 2.6m, and a length between *2m to *7m. The plant is
completely
controlled by PLC negative-pressure system which offers higher
efficiency, safety
and more controllable quality comparing to the old-fashioned
controlling method.
1t mainly consists of a lifter, a material bin, an activation
furnace stack, a feeder,
an actuator, refractories, an activator, a waste heat boiler, a
pressure sensor, a
fan, a cooling discharger, a dust collector, a waste gas recycler,
a PLC cabinet, an
auxiliary preheater, an end-gas dryer for pretreatment, a drying
furnace stack, an
air- tight conveyor, an end-gas combustor, a waste heat recycler, a
quencher, a
desulfurizer, a denitrator, a dioxin separator, and a deduster.
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I. Waste carbons shall be collected in jumbo bags, and regenerated
when a
certain quantity is reached. For regeneration, waste carbons are
filled into the lifter
bin (approx. 6m3), lifted into preheating bin (waste heat furnace
and combustion
furnace shall be heated before starting rotary furnace), and fed
into furnace by
the variable-frequency feeder for drying with heat from waste gas
in lifter blade.
Dried materials are conveyed forward in the regeneration furnace
for preheating
gradually till desorption temperature (******0°C) is reached.
Temperature and
vapor control at this point is critical for the quality of
regeneration. The proper
temperature shall be *******0°C during the ****5 minutes of
activation period
with a vapor consumption of **3 ton/hour.
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II. Proper vapor supply and pressure are keys to secure an
effective activation,
and prevent a temperature drop. Vapor supply shall be started
gradually  when
temperature in the furnace reaches a constant level, meanwhile,
heat supplied by
preheater  shall be limited to facilitate generation of water
gas through combination
reactions of vapor and carbon. An appropriate amount of oxygen is
required for
the penetrating activation by vapor to achieve the optimal result.
Materials are
discharged and cooled down to ******0°C through the rotary cooling
tube of the
rotary furnace, and then conveyed into the cooling furnace again
following rotation
of the furnace stack. Regenerated activated carbons are obtained
after 3 minutes of
water cooling at an anaerobic state in furnace, and collected into
material bin
through air-tight gas flow conveyor. At this point, materials and
oxygen are flowing
to opposite directions in the furnace, which is known as the
reverse flow method,
being different from the forward flow method in which materials and
oxygen
supply flow in the same direction (the latter is applicable for
producing brand-new
activated carbon only). The heater mentioned below refers to
auxiliary heating
by natural gas or combustor for reaching the temperature required
for activation
when volatiles from materials are insufficient. When end gas of
*******0°C is
induced into secondary combustion furnace by the feeding fan, and
the end gas of
*********0°C from high-temperature combustion is induced into waste
heat boiler
again, the waste gas of *******0°C at this point is induced into
pouch*-style pulse
deduster by the fan on waste heat boiler through jet ammonium
hydroxide pump,
alkaline liquor spray tower, gas*-water separator (condenser),
quicklime jet tower,
active carbon jet tower, cyclone collector and secondary alkaline
liquor spray in
sequence, and then conveyed into the active carbon absorption tank
for waste gas
collection before discharging to an elevation of *5 meters. The
above regeneration
cycle takes about 2 hours, and subject to negative*-pressure
sensory control.
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III. Particularity of material. Waste carbons may had absorbed all
kinds
of organic or inorganic substances, quantity and components of
waste gas
generated therefore would never be constant. The complicity has
been duly
considered by designers of the plant. Output is determined by
moisture content
and absorbed volatile content. When moisture content of material is
dried to
a level below 1 5%,capacity is ****0 ton (raw
material), and quantity of fume
mixture is *0,*****5 ,**0/hour. Therefore, auxiliary device for end
gas treatment
is required. All devices used in the process are resistant to
high-temperature
and corrosion.
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IV. According to requirements of environmental impact
assessment,
negative-pressure venting systems shall be used for material
storage, gas shall
be delivered into combustion furnace, and end gas from material
drying shall be
combusted in combustion furnace.
Note: size of furnace stack, boiler, combustion furnace, tubes and
fans shall
match specific output of regenerated products.
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Pays: | China |
N ° de modèle: | Justfine-1004 |
Prix FOB: | Obtenir le dernier prix |
Localité: | - |
Prix de commande minimale: | - |
Commande minimale: | 1 Set |
Packaging Detail: | - |
Heure de livraison: | - |
Capacité de Fournir: | - |
Payment Type: | - |
Groupe de produits : | - |