CN202936372U - Coal activated carbon tar recovery system of vertical internally heated retort - Google Patents

Abstract

The utility model relates to a coal activated carbon tar recovery system of a vertical internally heated retort. The coal activated carbon tar recovery system comprises a Venturi tower, a cyclone oil-trap, an ammonia water-tar mixing tank and a tar tank, wherein the Venturi tower is communicated with the retort through manifolds; the Venturi tower and the cyclone oil-trap are communicated with the ammonia water-tar mixing tank respectively; and the ammonia water-tar mixing tank is communicated with the tar tank. The coal activated carbon tar recovery system can effectively recycle tar in tail gas produced after raw coal is carbonized, so that not only the tail gas is purified, but also good economic benefits can be generated; taking furnace profile with monomer of 50,000 tons for example, 200 tons of raw coal is used every day, 2 tons of tar can be recycled, and earnings of 8000 yuan can be obtained as per the present price of 4000 yuan per ton of coal tar.

Description

Hot charring furnace coal mass active carbon coke tar recovery system in vertical type

Technical field

The utility model relates to the comprehensive utilization technique of tail gas of carbonization stove, specifically a kind of charring furnace coal mass active carbon tail gas tar, coal-gas recovering facility.

Background technology

Gac is a kind of widely used sorbing material, and is increasing at the consumption of environmental protection, food, light industry, medicine and other fields since 20 beginnings of the century were thrown people's industry production, also is being widely used aspect catalyzer and carrier thereof.

The common equipment of producing gac is lump coal stove or granule coal stove.Granule coal upright furnace: the vertical height of body of heater is 7m, and in stove, gas skirt to carbonizing chamber height is 4m; Be provided with 6 carbonizing chambers, 4 opening for feeds; Gas skirt plays a part negative pressure cavity, every long 3m of negative pressure cavity, and wide 45cm, high 40cm, whole gas skirt all imbed in lump coal or little beans.In the production process of activated carbon of granule coal upright furnace, the tail gas (being called coal gas of high temperature or raw gas) that charring furnace produces is directly burnt rear Sui exhaust emissions usually in atmosphere.Contain the compositions such as a large amount of tar and hydrogen, nitrogen in this tail gas, exhaust gas component is as follows:

The huge investments of needs such as gas composition is coal-tar middle oil owing to extracting, hydrogen, nitrogen, and produce little effect, reclaim " losing more than gain ", so the traditional method of processing so far coal gas of high temperature is still to have burned it, both wasted resource, polluted again environment.

The utility model content

The purpose of this utility model is, solves the tail gas coal-tar middle oil byproduct of conventional art after to former coal carbonization, and difficult the recovery and the high difficult problem of cost provides a kind of device and processing method of new-type extraction tar.

The utility model is achieved in that

Extract the recovery system of tar in tail gas after the former coal carbonization of the utility model, mainly contain Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank, tar tank composition.Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank.

Under in described Wen's tower, be provided with temperature drop pipe and powder travel fatigue pipe;

Described whirlwind trap for oil, in the multi-layer rotational flow column plate is arranged, ammonia water spraying device is established at the top.

The utility model extracts the beneficiating ingredients such as tar from raw gas production technique is:

One. the purifying technique of coal gas

Raw coal is at the upright carbonization furnace high temperature carbonization, 120～200 ℃ of raw gass of generation, and after convergence tube entered Wen's tower, ammoniacal liquor sprayed raw gas along a plurality of spray lines of Wen's tower inner top, and raw gas is cooled to 70～90 ℃;

Coal gas after Wen's tower washing enters whirlwind trap for oil bottom by Wen's tower middle part through booster fan, rises thereupon;

Ammoniacal liquor carries out cooling, purification by the flusher at whirlwind trap for oil top to the coal gas that rises; Multi-layer rotational flow column plate in the whirlwind trap for oil carries out stage treatment to the dust in coal gas;

The coal gas of processing through the whirlwind trap for oil, by the top of whirlwind trap for oil out after, external application.

Two. the production technique that light oil, tar, ammonia extraction reclaim

The raw gas that produces after the charring furnace high temperature carbonization enters Wen's tower by convergence tube;

After raw gas washed through Wen's tower spray water, the ammonia water and tar oil mixed solution entered in the ammonia water and tar oil tank from Wen's tower bottom;

The ammonia water and tar oil mixed solution adopts the method cooling, standing, that separate of nature to carry out stage treatment in the ammonia water and tar oil tank, and namely form three layers: the top layer is light oil---catch into light oil pool; The middle level is that heavy oil is extracted in the tar storage tank with the tar pump and stores; Be ammoniacal liquor and burnt mud mixture at the bottom of tank: ammoniacal liquor---with ammoniacal liquor pumping Wen tower, be used for cooling raw gas; Burnt mud mixture adopts the bottom to be provided with the tar ammonia separator tank of deslagging scraper plate, and the dregs of fat that are deposited on the separator tank bottom are scraped.

The beneficial effects of the utility model are:

The utility model can effectively reclaim-turn waste into wealth the tar in tail gas after former coal carbonization, not only greatly pure tail gas, can also produce good economic benefit: the type of furnace according to 50,000 tons of monomers is example, use 200 tons, raw coal its every day, 2 tons, recyclable tar (and 2 tons of tar of traditional technology are directly burnt), according to present 4000 yuan of name coin meters of the every doze of coal tar price, can make a profit every day 8000 yuan.

Below in conjunction with drawings and Examples, the utility model is described further.

Description of drawings:

The structural representation of the coke tar recovery system of the utility model embodiment.

Embodiment:

Accompanying drawing shows the overall structure of the coke tar recovery system of the utility model embodiment

The coke tar recovery system of the present embodiment mainly contains Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank, tar tank composition.Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank;

Described convergence tube is that the flue gas that will contain tar from the charring furnace top converges, the coal gas of high temperature after the centralized collection charing (120～200 ° of C claim again raw gas);

Described Wen's tower, its effect are by to ammonia spray, the temperature of coal gas of high temperature lowered, and the treating part dust.Be comprised of temperature drop pipe and powder travel fatigue pipe two portions in this Wen's tower, temperature drop pipe is responsible for cooling, and powder travel fatigue pipe is responsible for dedusting;

Described whirlwind trap for oil, in be provided with the multi-layer rotational flow column plate, cold ring ammonia water spraying device is established at the top.

The concrete technology of the present embodiment extraction coal gas, tar, ammoniacal liquor is as follows:

One. the purification of coal gas

The raw gas that charring furnace produces, temperature is 120 ℃ of-200 ° of C approximately, enter Wen's tower through convergence tube;

Be provided with a plurality of ammoniacal liquor spray lines in Wen's tower, (this ammoniacal liquor can adopt the ammoniacal liquor of second stage employ by its spray ammoniacal liquor, namely in the ammonia water and tar oil mixing tank through the remained ammonia after clarification, Wen's tower is delivered in pressurization through aqua ammonia pump) with the raw gas cooling, be cooled to: 70～90 ℃.

Coal gas after the washing of Wen's tower is directly delivered to the whirlwind trap for oil through booster fan, and the coal gas that rises is carried out cooling, purification.At last, coal gas by the top of whirlwind trap for oil out after, directly export external application.

Tar, phlegma that ammoniacal liquor after the place's washing of Wen's tower and condensation are got off flow in the ammonia water and tar oil mixing tank by the pipeline that is located at Wen's tower bottom, carry out clarified separation.

Two. the production technique that the extraction of tar, ammoniacal liquor is reclaimed

The ammonia water and tar oil mixed solution that gets off from Wen's tower bottom enters in the ammonia water and tar oil tank, through water cooling, standing, separate after, the ammonia water and tar oil mixed solution is divided into three layers: top layer light oil is caught into light oil pool, and the heavy tar at the bottom of sedimentation basin is extracted in the tar pool inner storage tank with the tar pump and stores; The middle level through separate, cooled ammoniacal liquor, with ammoniacal liquor pumping Wen tower spray again, cooling raw gas.

The ammonia water and tar oil mixed solution of Wen's tower, whirlwind trap for oil bottom is from flowing in the tar ammonia tank, ammoniacal liquor, tar through cooling, standing, separate after, mixed solution divides three layers, the top layer tar light oil is done fuel and is used; The middle level is heavy oil, and bottom is ammoniacal liquor and burnt mud mixture.

The separation of the dregs of fat and processing

For the processing of sneaking into the coal dust ash in coal tar, generally be deposited on the bottom, pond in the cyclic ammonia water pond, can be interrupted cleaning.Large for dust content, tar ammonia separates and deslagging can adopt mechanize tar ammonia separator tank, and this device bottom is provided with the deslagging scraper plate, can be automatically the dregs of fat that are deposited on bottom separator tank be scraped.

Claims (1)

1. hot charring furnace coal mass active carbon coke tar recovery system in vertical type, is characterized in that: be comprised of Wen's tower, whirlwind trap for oil, ammonia water and tar oil mixing tank and tar tank; Wen's tower is communicated with charring furnace by convergence tube; Wen's tower, whirlwind trap for oil are communicated with the ammonia water and tar oil mixing tank respectively; The ammonia water and tar oil mixing tank is communicated with tar tank;

Under in described Wen's tower, be provided with temperature drop pipe and powder travel fatigue pipe;

Described whirlwind trap for oil, in the multi-layer rotational flow column plate is arranged, ammonia water spraying device is established at the top.

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