CN201197926Y

CN201197926Y - Self material and raw material wood chip tail gas purifying apparatus for producing active carbon by chemical method

Info

Publication number: CN201197926Y
Application number: CNU2008200849437U
Authority: CN
Inventors: 项缙农
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-26
Filing date: 2008-03-26
Publication date: 2009-02-25
Anticipated expiration: 2018-03-26

Abstract

The utility model relates to a device for purifying carbon activation tail gas of self material and raw material wooden meal used for active carbon production with chemical method, consisting of two units which are connected from beginning to end. Each unit is composed of a spray type airflow absorbing reactor and a cyclone type absorbing reaction-separator which are connected in series; a powder spraying pipe, a minitype feeder and a neutralizing agent hopper are arranged at the tail-gas inlet of the first unit, and the lower part of the spray type airflow absorbing reactor is provided with a spiral feeder and a material hopper; a venturi tube is connected in series on an air inlet pipe at the bottom of the spray type airflow absorbing reactor of the second purifying unit; the feeding hole of the venturi tube is connected with the a spiral feeder and a wooden meal hopper in sequence; the top of the cyclone type absorbing reaction-separator is connected with a draught fan and a gas chimney. The self material and raw material wooden meal used for active carbon production is used as the material for purifying carbon activation tail gas to control pollution and reclaim the activating agent, and the reclaimed activating agent does not need any treatment and can be returned to the production process, so the utility model is economic, effective and simple.

Description

Active carbon by chemical method production is with the device of self material, raw material wood chip cleaning of off-gas

One, affiliated technical field

The utility model belongs to producing activated carbon by chemical method technology neck city, and the spy relates to the device of active carbon by chemical method production with self material, raw material wood chip cleaning of off-gas.

Two, background technology

Existing wood raw material all is with the moving bed activation method of rotary furnace and the fixed bed activation method of flattening oven with phosphoric acid, zinc chloride activation agent activation preparing active carbon technology.The critical defect of these 2 kinds of method equipment is the purification that lacks pollutant in the self tail gas, the recycling function that activator reclaims function and heat energy.So activator consumes high, phosphoric acid activation method is produced the 1t active carbon will consume 300～350kg phosphoric acid, zinc chloride activation method is produced the 1t active carbon will consume 200～300kg zinc chloride, therefore cause serious environmental to pollute. these 2 kinds of square law devices do not reclaim the function of heat energy in the self tail gas, so energy consumption is also than higher.At present, their tail gas pollution all is row improvement again after excreting.External tail gas pollution improvement technical difficulty is very big, use condensation method, the Venturi tube absorption process, the rotating stream tray scrubber absorption process, the spray absorption process, the moisture film absorption process, turbulent flow tower absorption process, the regulation effect of electricity demist method etc. is not good, the activator solution of Hui Shouing particularly, contained composition is very complicated, except that activator, also contain wood tar, organic acid, impurity such as creosote, be difficult to isolate pure activator, and concentration is not high, so can not directly do the activator reuse, the practical valency of the activator that reclaims is not high. and the corrosivity of charcoal activation tail gas is very strong, and treating tail gas equipment is very complicated, and cost is very high.

Three, summary of the invention

Goal of the invention

The purpose of this utility model provides a kind of active carbon by chemical method production, with self raw material wood chip and material purification charcoal activation tail gas, reclaims activator, and control is polluted, and the activator rate of recovery almost reaches 100% device.

Technical scheme

Active carbon by chemical method is produced, use self material, raw material wood chip cleaning of off-gas device, form with pipeline is end to end by two clean units, each clean unit is all by spray-moving type gas-flow reactors and cyclone type absorption reaction--and separator constitutes, the spray-moving type gas-flow reactors is a cylinder, it is conical that the bottom is, the bottom connects wikipedia type playpipe and bend pipe, top is turbination, the gas outlet at top is by pipeline and cyclone type absorption reaction--the air inlet of separator is connected, cyclone type absorption reaction--separator is long cone cyclone separator, its bottom discharge mouth connects enclosed type discharger Zai Ti one clean unit, spray-moving type air-flow absorption reactor thermally middle and lower part is provided with screw feeder and the material hopper that has spices device, screw feeder is driven by decelerator and buncher (not drawing among the figure), be connected to discharge tube successively on the tail gas air inlet pipe that spray-moving type air-flow absorption reactor thermally bottom wikipedia type playpipe is connected, miniature dosing unit and nertralizer hopper Zai Ti two clean units, the tail gas air inlet pipe that spray-moving type air-flow absorption reactor thermally bottom is connected is connected with Venturi tube, connect screw feeder and the wood chip hopper that has attached wall vibrations device on the Venturi tube charging aperture successively, screw feeder drives the cyclone type absorption reaction by decelerator and buncher (not drawing among the figure)--and the separator top is gone up the gas outlet and is connected air-introduced machine and exhaust chimney (not drawing among the figure) successively.

In technique scheme, a whole set of purifier inwalls such as spray-moving type gas-flow reactors, cyclone type absorption reaction--separator, adapter, bend pipe, Venturi tube, playpipe, air-introduced machine, gas chimney, material hopper and screw feeder all are lined with the lining corrosion protection of wear-resisting acid-resistant and heat-resistant.

In clean unit of Zai Ti, the wood chip material of activator is arranged as the absorption cleaning material with infiltration, activator volatile matter in the absorption cleaning tail gas, the activator analyte, wood tar, organic acid, polluters such as creosote, if use zinc chloride activation, also use zinc oxide, or zinc carbonate, or zinc hydroxide is as the nertralizer pulvis, spraying is in tail gas, in and tail gas in acidic materials such as hydrogen chloride, nertralizer also can be mixed with slurries with liquor zinci chloridi, be mixed into material with wood chip again, in the absorption and tail gas in acidic materials such as hydrogen chloride, tail gas is purified substantially, activator is reclaimed substantially, and material also obtains preliminarily dried simultaneously, the temperature of tail gas drops to below the 80C.

In two clean units of Zai Ti, with the wood chip of humidity as the absorption cleaning material, further polluters such as residual activator volatile matter, wood tar, organic acid, creosote in the absorption cleaning tail gas, reach polluters such as nertralizer, zinc chloride, charcoal end dust, make that tail gas is thoroughly purified, activator is reclaimed fully, wood chip itself also obtains preliminarily dried simultaneously.

Below in conjunction with accompanying drawing and embodiment this new device is described further.

Description of drawings

Figure, producing activated carbon by chemical method purifies charcoal with self raw material, material and activates the tail gas unit schematic diagram

Among the figure: 1, the nertralizer hopper; 2, the material hopper of chemical legal system activity; 3, the import of charcoal activation tail gas; 4, miniature dosing unit; 5, discharge tube; 6, screw feeder; 7, the spray-moving type gas-flow reactors; 8, the wikipedia type playpipe; 9, bend pipe; 10, take over; 11, cyclone type absorption reaction--separator; 12, the enclosed type discharger; 13, the upright adapter; 14, the wood chip hopper; 15, horizontal adapter; 16, screw feeder; 18, Venturi tube; 19, spray-moving type air-flow absorption reactor thermally; 20, the wikipedia type playpipe; 21, bend pipe; 22, take over; 23, cyclone type absorption reaction-separator; 24, the enclosed type discharger.

T1, T2, T3, T4, T5, electroheat pair point for measuring temperature (be connected with temperature indicator with lead respectively, do not draw among the figure).

The specific embodiment

Embodiment 1

Produce the exhaust gas processing device of active carbon with zinc chloride activation method, see figure, at first clean unit, material is in hopper (2), quantitatively add spray-moving type gas-flow reactors (7) continuously by screw feeder (6), zinc oxide in the while hopper (1), or zinc carbonate, or zinc hydroxide quantitatively adds near the discharge tube (5) of offgas duct air inlet (3) by miniature dosing unit (4) continuously, spraying is in charcoal activation tail gas, the wikipedia type playpipe (8) of flowing through, spray into spray-moving type gas-flow reactors (7) with tail gas, cyclone type absorption reaction-separator (11), generate zinc chloride with the hydrogen chloride neutralization reaction in the tail gas, and absorbed by material, wood tar in the while tail gas, organic acid, also absorbed by material substantially with dirts such as creosotes, material is discharged from the enclosed type discharger (12) of cyclone type absorption reaction-separator (11) bottom, tail gas is from cyclone type absorption reaction-separator (11) bottom, by pipeline (13,15) enter the 2nd clean unit, wood chip in the wood chip hopper (14), quantitatively add continuously in the Venturi tube (18) by screw feeder (16), spray into spray-moving type gas-flow reactors (19) with tail gas through playpipe (20), cyclone type absorption reaction--the separator (23) of flowing through, material is discharged from the enclosed type discharger (24) of its bottom, cleaning of off-gas is taken out by air-introduced machine (not drawing the figure) from its top and is drawn, from the emptying of gas chimney..Tail gas is thoroughly purified, activator is reclaimed fully, and wood chip itself also obtains preliminarily dried simultaneously, and the control moisture content is about 25%.

Embodiment 2

Produce the exhaust gas processing device of active carbon with phosphoric acid activation method, see figure, leave out the nertralizer hopper (1) among the figure, miniature dosing unit (4), discharge tube (5), at first clean unit, material in the material hopper (2) is by screw feeder (6), quantitatively add spray-moving type gas-flow reactors (7) continuously, be dispersed in the charcoal activation tail gas, the spray-moving type gas-flow reactors (7) of flowing through, revolve wind-suction type and receive reaction-separator (12), phosphoric acid steam in the tail gas, and wood tar, organic acid, dirts such as creosote, substantially absorbed by material, tail gas is purified substantially, temperature drops to below the 80C, material is discharged from the enclosed type discharger (12) of its bottom, tail gas is received reaction-separator (12) top through pipeline (13 from revolving wind-suction type, 15) enter the Venturi tube (18) of second clean unit, wood chip in the hopper (14) also quantitatively adds Venturi tube (18) continuously by screw feeder (16) simultaneously, spray into spray-moving type gas-flow reactors (19) with tail gas, cyclone type absorption reaction-the separator (23) of flowing through, tail gas is thoroughly purified, activator is reclaimed fully, it is moistening that wood chip still keeps, discharge from the enclosed type discharger (24) of bottom, cleaning of off-gas is taken out by air-introduced machine (not drawing the figure) from the top and is drawn, from the emptying of gas chimney.

The utility model has the advantages that and gather materials on the spot that reclaim the activator absorption material with the production material of controlling oneself, wood chip as administering to pollute, the activator of recovery need not anyly be processed, turn back on the spot among the production process, easy and simple to handle, equipment is simple, effect is remarkable, and is economical and practical.

Claims

1. self material of active carbon by chemical method production, the device of raw material wood chip cleaning of off-gas, form with pipeline is end to end by two clean units, each clean unit is all by spray-moving type gas-flow reactors and cyclone type absorption reaction--and separator constitutes, the spray-moving type gas-flow reactors is a cylinder, it is conical that the bottom is, the bottom connects the wikipedia type playpipe, top is turbination, the gas outlet at top is connected by the air inlet of pipeline with cyclone type absorption reaction one separator, cyclone type absorption reaction--separator is long cone cyclone separator, its bottom discharge mouth connects enclosed type discharger Zai Ti one clean unit, spray-moving type air-flow absorption reactor thermally middle and lower part is provided with screw feeder and the material hopper that has spices device, screw feeder is driven by decelerator and buncher, be connected to discharge tube successively on the tail gas air inlet pipe that spray-moving type air-flow absorption reactor thermally bottom is connected, miniature dosing unit and nertralizer hopper Zai Ti two clean units, the tail gas air inlet pipe that spray-moving type air-flow absorption reactor thermally bottom is connected is connected with Venturi tube, connect screw feeder and the wood chip hopper that has attached wall vibrations device on the Venturi tube charging aperture successively, screw feeder drives the cyclone type absorption reaction by decelerator and buncher--and the separator top is gone up the gas outlet and is connected air-introduced machine and exhaust chimney successively.

2. the described active carbon by chemical method production of claim 1 is with the device of self material, raw material wood chip cleaning of off-gas, and it is characterized in that: a whole set of purifier inwalls such as spray-moving type gas-flow reactors, cyclone type absorption reaction--separator, adapter, bend pipe, Venturi tube, playpipe, air-introduced machine, gas chimney, material hopper and screw feeder all are lined with the corrosion protective lining of wear-resisting acid-resistant and heat-resistant.