CN211399806U - Purified terephthalic acid residue resource incineration treatment device - Google Patents

Abstract

The utility model discloses a refined terephthalic acid residue resourceful incineration disposal device, including burning furnace, still include reation kettle, reation kettle has rectifying column, first condenser and second condenser, first condenser has gas feed and liquid outlet, the second condenser has gas feed and liquid outlet, the gas feed of gas feed, the gas feed of second condenser of first condenser is linked together with the gas outlet of rectifying column respectively. Still be equipped with the waste residue cooler bin, breaker and the ball mill that connect gradually between reation kettle and the burning furnace, the waste residue cooler bin links to each other with reation kettle's discharge gate, the ball mill links to each other with the feed inlet that burns burning furnace through the fan. And a liquid outlet of the second condenser is connected with the wastewater pool. The utility model discloses not only realized waste recycling, burnt volume compares with prior art and has improved more than the triple moreover, and the residue burning is more abundant, and resourceful treatment is more thorough, and the energy consumption is low during the processing, more environmental protection.

Description

Purified terephthalic acid residue resource incineration treatment device

Technical Field

The utility model relates to a chemical industry residue processing apparatus especially relates to a smart terephthalic acid residue resourceful incineration disposal device.

Background

Purified Terephthalic Acid (PTA) is a basic raw material for producing polyester fibers and PET resins, and purified terephthalic acid residues are chemical wastes discharged in the process of preparing purified terephthalic acid, and if the purified terephthalic acid residues are subjected to landfill treatment or random stacking, the environment can be polluted. The applicant filed an invention patent on 10.10.2001 to the Chinese patent office entitled purified terephthalic acid residue incineration method, with the patent application number of 01134015.0, the method dehydrates materials according to the water content of the purified terephthalic acid residue to make the water content lower than 60%, heats the dehydrated materials through a heating device to melt the dehydrated materials into paste materials, and sprays the melted paste materials into an incinerator to be incinerated. However, the method has the following defects in the practical use process:

(1) because the incinerator is adopted for direct incineration and the residue is not recycled, the useful resources in the residue are greatly wasted;

(2) because the pasty materials are sprayed and burned, the burning amount is small, and the burning is insufficient;

(3) the pasty material has certain moisture, so that the smoke treatment capacity and the treatment difficulty of the incinerator are increased;

(4) the pasty materials are sprayed and burnt, so that the pasty materials fall onto a fire grate of the incinerator to generate coking phenomenon, and the incinerator needs to be frequently stopped for cleaning, thereby increasing the workload of operators and reducing the residue treatment efficiency;

(5) since external compressed air at a temperature of not less than 50 c is applied when the melted pasty material is injected into an incinerator for incineration, the cost of residue treatment is increased.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and can not only carry out waste recycling to the residue, burn abundant, environmental protection, the low accurate terephthalic acid residue resourceful incineration disposal device of residue treatment cost moreover.

In order to solve the technical problem, the utility model discloses a such purified terephthalic acid residue resourceful incineration treatment device, including burning furnace, still include reation kettle, reation kettle has rectifying column, first condenser and second condenser, first condenser has gas inlet and liquid outlet, the second condenser has gas inlet and liquid outlet, the gas inlet of gas inlet, the second condenser of first condenser is linked together with the gas outlet of rectifying column respectively.

As an optimal implementation scheme still be equipped with the waste residue cooler bin, breaker and the ball mill that connect gradually between reation kettle and the burning furnace, the waste residue cooler bin links to each other with reation kettle's discharge gate, the ball mill links to each other with the feed inlet that burns burning furnace through the fan.

As a preferred embodiment of the present invention, the liquid outlet of the second condenser is connected to the wastewater tank.

As a preferred embodiment of the utility model, the liquid outlet of first condenser passes through the pipeline and links to each other with the slicer, the operating temperature control of slicer is at 25 ~ 40 ℃.

As an optimized implementation scheme of the utility model install the vacuum pump between first condenser and the second condenser, the vacuum pump passes through the pipeline and links to each other with first condenser second condenser respectively.

As a preferred embodiment of the utility model, set up the diaphragm type wall boiler in burning furnace's furnace, the heat energy direct transfer that produces when burning gives the diaphragm type wall boiler, is exported the utilization of heat energy by the diaphragm type wall boiler.

As an optimized embodiment of the utility model, the reation kettle is heat-conducting oil reation kettle or steam reation kettle.

After the structure is adopted, the utility model discloses following beneficial effect has:

the utility model discloses can retrieve the benzoic acid in the accurate terephthalic acid residue, both accomplished waste recycling, draw useful benzoic acid as the raw materials of other products, realized the residue minimizing that burns simultaneously, reduced the incineration disposal volume, protected the environment, further reduced the residue treatment cost.

The utility model discloses the moisture content of the waste residue after extracting benzoic acid is almost zero, smashes through the ball mill, grinds the back, utilizes the fan directly to spout into and burns burning furnace, and the waste residue after smashing, grinding has increased specific surface area by a wide margin, burns the volume and compares with prior art and has improved triple at least, has greatly improved the volume of burning to waste residue after smashing, grinding burns more fully, and the resourceful treatment is more thorough, more is favorable to the environmental protection.

The utility model discloses can burn the organic matter in the flue gas completely when burning, the hot burning rate of lime-ash is lower, and the lime-ash production volume reduces by a wide margin, burns burning furnace exhaust flue gas and extremely little to the environmental impact.

The utility model discloses just obtained abundant burning before falling into the grate that burns burning furnace through ball mill crushing, grinding back waste residue, avoided grate coking phenomenon, burnt burning furnace blowing-out time shortens, and the deashing cycle lengthens.

The utility model discloses when spraying the waste residue after the ball mill grinds to burning in the incinerator, waste residue need not heat, can directly get into in the incinerator to the residue treatment cost has further been reduced.

The utility model discloses set up the diaphragm type wall boiler in the furnace that burns burning furnace, both improved waste heat utilization rate, improved the incineration disposal volume simultaneously, the heat energy of production also correspondingly increases by a wide margin.

Drawings

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a device for resource incineration treatment of residue of purified terephthalic acid according to the present invention.

Detailed Description

Referring to fig. 1, the utility model provides a purified terephthalic acid residue resource incineration treatment device, which comprises an incinerator 1 and a reaction kettle 2, the reaction kettle 2 is provided with a rectifying tower 2-1, a first condenser 2-2 and a second condenser 2-3, the first condenser 2-2 and the second condenser 2-3 are preferably water-cooled condensers, the first condenser 2-2 has a gas inlet 2a and a liquid outlet 2b, a shut-off valve 2f is usually installed in the line of the liquid outlet 2b of the first condenser 2-2, the second condenser 2-3 has a gas inlet 2c and a liquid outlet 2d, a stop valve 2g is usually installed on the pipeline of the gas inlet 2c of the second condenser 2-3, and the gas inlet 2a of the first condenser 2-2 and the gas inlet 2c of the second condenser 2-3 are respectively communicated with the gas outlet 2e of the rectifying tower 2-1. When the device works, the first condenser 2-2 is used for condensing the benzoic acid gas separated from the purified terephthalic acid residues into liquid benzoic acid solution and outputting the liquid benzoic acid solution from the liquid outlet 2b of the first condenser 2-2, and the second condenser 2-3 is used for condensing the light-weight-removed gas evaporated from the purified terephthalic acid residues into liquid light-weight-removed liquid and outputting the liquid light-weight-removed liquid from the liquid outlet 2d of the second condenser 2-3.

As an optimal implementation scheme still be equipped with the waste residue cooler bin 3, breaker 4 and the ball mill 5 that connect gradually between reation kettle 2 and the burning furnace 1 of burning, waste residue cooler bin 3 links to each other with reation kettle 2's discharge gate, ball mill 5 links to each other with the feed inlet that burns burning furnace 1 through fan 6.

As a preferred embodiment of the present invention, the liquid outlet 2d of the second condenser 2-3 is connected to the wastewater tank 7 through a pipeline.

As a preferred embodiment of the utility model, the liquid outlet 2b of first condenser 2-2 links to each other with commercially available slicer 8 through the pipeline, slicer 8's operating temperature control is at 25 ~ 40 ℃.

As a preferred embodiment of the utility model, install vacuum pump 9 between first condenser 2-2 and the second condenser 2-3, vacuum pump 9 links to each other with first condenser 2-2, second condenser 2-3 respectively through the pipeline. As shown in fig. 1, the vacuum pump 9 is connected to the top of the first condenser 2-2 and the bottom of the second condenser 2-3 through a pipeline 11 and a pipeline 12, and a stop valve 13 is installed on the pipeline 11 between the vacuum pump 9 and the first condenser 2-2.

As a preferred embodiment of the present invention, a membrane wall boiler 10 is provided in the furnace of the incinerator 1, and heat energy generated during incineration is directly transferred to the membrane wall boiler 10, and the membrane wall boiler 10 outputs and utilizes the heat energy.

The utility model discloses in, reation kettle 2 preferred is conduction oil reation kettle or steam reation kettle. During operation, the temperature in the reaction kettle 2 can be adjusted by conventional means such as heat conduction oil or steam.

As a preferred working mode of the present invention, referring to fig. 1, the residue a of purified terephthalic acid is fed into a reaction kettle 2; controlling the temperature in the reaction kettle 2 at 80-120 ℃, preferably simultaneously vacuumizing the reaction kettle through a vacuum pump 9, controlling the vacuum degree of the reaction kettle at a negative pressure state, in the utility model, vacuumizing in other modes can also be adopted, for example, two vacuum pumps are adopted, one is connected with a first condenser 2-2, the other is connected with a second condenser 2-3, when in work, the two vacuum pumps are simultaneously started for vacuumizing, the second condenser 2-3 is started, a stop valve 2g is in an open state, the first condenser 2-2 is not started, a stop valve 2f and a stop valve 13 are in a closed state, dehydrating is carried out on the residue A of the purified terephthalic acid, and when in dehydration work, the light-removed gas evaporated from the residue A of the purified terephthalic acid enters a rectifying tower 2-1 and enters the second condenser 2-3 from a gas outlet 2e of the rectifying tower 2-1, under the condensation action of the second condenser 2-3, the working temperature of the second condenser 2-3 is preferably lower than 40 ℃, the light component removed gas is condensed from a gas state into liquid light component removed liquid, and the liquid component removed liquid flows into a waste water tank 7 from a liquid outlet 2d of the second condenser 2-3; after dehydration is finished, the temperature in the reaction kettle 2 is controlled to be 180-250 ℃, the vacuum degree of the reaction kettle is continuously controlled to be in a negative pressure state, the first condenser 2-2, the stop valve 2f and the stop valve 13 are in an open state, the working temperature of the first condenser 2-2 is controlled to be 90-110 ℃, the second condenser 2-3 is not started, the stop valve 2g is in a closed state, liquid benzoic acid recovery is started, the recovered liquid benzoic acid is output through the liquid outlet 2b of the first condenser 2-2, during working, benzoic acid gas separated from the purified terephthalic acid residue A enters the rectifying tower 2-1 and enters the first condenser 2-2 from the gas outlet 2e of the rectifying tower 2-1, under the condensation action of the first condenser 2-2, the benzoic acid gas is condensed from a gas state to a liquid benzoic acid liquid state and is output to the slicing machine 8 through a pipeline from the liquid outlet 2b of the first condenser 2-2 for slicing, slicing, packaging and outputting; after the recovery of the benzoic acid is finished, the waste residues in the reaction kettle 2 are output to a waste residue cooling box 3 and cooled at normal temperature, the cooled waste residues are sent to a crusher 4 for crushing, and then the crushed waste residues are sent to a front bin 15 of an incinerator through a pipe chain conveyor 14; then the waste residue in the front storage bin 15 of the incinerator is sent into a ball mill 5 through a screw conveyor 16 for crushing and grinding; the waste residue after being ground by the ball mill 5 is sprayed into the incinerator 1 by the fan 6 to be incinerated.

Through trying out, the utility model discloses not only realize the waste recycling, extracted the raw materials that are used for producing polyester fiber and PET resin with useful benzoic acid, burn the volume moreover and compare with prior art and improved more than the triple, greatly improved and burned the volume to the residue burning is more abundant, and resourceful treatment is more thorough, and more environmental protection, the energy consumption is low during the processing, has gained good effect.

Claims (7)

1. The utility model provides a purified terephthalic acid residue resourceful incineration disposal device, includes incinerator (1), its characterized in that: still include reation kettle (2), reation kettle (2) have rectifying column (2-1), first condenser (2-2) and second condenser (2-3), first condenser (2-2) have gas inlet (2 a) and liquid outlet (2 b), second condenser (2-3) have gas inlet (2 c) and liquid outlet (2 d), gas inlet (2 a) of first condenser (2-2), gas inlet (2 c) of second condenser (2-3) are linked together with gas outlet (2 e) of rectifying column (2-1) respectively.

2. The purified terephthalic acid residue resource incineration disposal device according to claim 1, characterized in that: still be equipped with waste residue cooler bin (3), breaker (4) and ball mill (5) that connect gradually between reation kettle (2) and burning furnace (1), waste residue cooler bin (3) link to each other with reation kettle's (2) discharge gate, ball mill (5) link to each other with the feed inlet that burns burning furnace (1) through fan (6).

3. The purified terephthalic acid residue resource incineration disposal device according to claim 1, characterized in that: and a liquid outlet (2 d) of the second condenser (2-3) is connected with a wastewater pool (7).

4. The purified terephthalic acid residue resource incineration disposal device according to claim 1, characterized in that: the liquid outlet (2 b) of the first condenser (2-2) is connected with a slicing machine (8) through a pipeline, and the working temperature of the slicing machine (8) is controlled to be 25-40 ℃.

5. The purified terephthalic acid residue resource incineration disposal device according to claim 1, characterized in that: a vacuum pump (9) is installed between the first condenser (2-2) and the second condenser (2-3), and the vacuum pump (9) is respectively connected with the first condenser (2-2) and the second condenser (2-3) through pipelines.

6. The purified terephthalic acid residue resource incineration disposal device according to claim 1, characterized in that: a membrane wall boiler (10) is arranged in a hearth of the incinerator (1), heat energy generated during incineration is directly transferred to the membrane wall boiler (10), and the membrane wall boiler (10) outputs and utilizes the heat energy.

7. The purified terephthalic acid residue resource incineration treatment device according to any one of claims 1 to 6, characterized in that: the reaction kettle (2) is a heat conduction oil reaction kettle or a steam reaction kettle.

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