Tar treatment method and treatment device

The technology of a processing device and a processing method is applied in the processing of tar, the processing of tar by heat treatment, the petroleum industry, etc., and can solve the problems of high energy consumption, inability to transport, and the inability to transport coal tar over long distances in the pipeline, and achieve The effect of saving energy, avoiding the release of harmful substances, and safe disposal process

Inactive Publication Date: 2017-06-09
福建省环境工程有限公司
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  • Summary
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  • Application Information

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Problems solved by technology

Through the heating device, the coal tar is always in a liquid state during the whole supply process, which reduces the labor intensity of the workers with less capital investment, reduces the occupation of the site, improves the working e...

Method used

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  • Tar treatment method and treatment device

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Experimental program
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Effect test

Embodiment 1

[0045] Please refer to figure 1 Shown, embodiment one of the present invention is:

[0046] Tar processing method provided by the invention comprises the steps:

[0047] Step 1: Heat the DMF circulating solvent containing tar to 140°C in a closed environment, and adjust the pressure to -0.075MPa by vacuuming. Under negative pressure, the DMF solvent becomes a gas and is separated to obtain the separated tar , and keep the temperature of the tar at 140° C.; when the content of the tar-containing DMF circulating solvent in the tar is as low as 8%, stop the extraction, and feed nitrogen to adjust the pressure to 0.1 MPa at normal pressure.

[0048] Step 2: Heat the ethylene pan oil to 130°C in a closed environment;

[0049] Step 3: Transport the tar separated in step 1 with a temperature of 120°C to 150°C into the closed environment of step 2. The temperature of the ethylene pan oil is kept at 125°C to 135°C. The tar is continuously heated during the transportation process, and...

Embodiment 2

[0051] Please refer to figure 1 Shown, embodiment two of the present invention is:

[0052] On the basis of Embodiment 1, the tar oil treatment device is further improved. The heating device on the first container 1 is a heating coil 6, and the heating coil 6 is arranged inside the first container 1. The first The heating device on the second container 2 is a steam heating jacket 8, and the steam heating jacket 8 is provided with a condensed water pipe 81. The delivery system 3 includes a delivery pump 31 and a delivery pipeline, and the delivery pump 31 is arranged on the delivery pipeline. Above, the delivery pipeline at the front end of the delivery pump 31 is provided with a second valve 32, and the delivery pump 31 is respectively connected to the first container 1 and the second container 2 through the delivery pipeline, and the connection between the delivery pump 31 and the first container A third valve 33 is provided on the delivery pipeline, and a fourth valve 34 is...

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Abstract

The invention relates to the technical field of petrochemical industry and aims to provide a tar treatment method and a tar treatment device. The tar treatment method comprises the following steps: 1, treating a tar-containing DMF cycling solvent through heating and pressure-reducing treatment and separating out tar; 2, heating ethylene disk oil; 3, mixing separated tar and the ethylene disk oil. The tar treatment device comprises a first container, a second container and a conveying system; heating devices and discharge pipes are arranged on the first container and the second container; the conveying system is connected with the second container. The tar treatment method and the tar treatment device have the beneficial effects that the tar is separated out through proper temperature and vacuum degree; the tar is diluted and dissolved by the ethylene disk oil, conveying of the tar is facilitated and the tar can be conveyed to the required procedure in a long distance; the whole process is sealed, a worker does not need to be in direct contact with the art, and the treatment process is safe and environmentally-friendly.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a tar treatment method and treatment device. Background technique [0002] Petrochemical companies generally use extractive distillation to obtain butadiene from C4 raw materials, and the commonly used extraction solvent is dimethylformamide (DMF for short). After rectifying butadiene from DMF, DMF will continue to be used as a circulating solvent. In order to ensure the quality of the circulating solvent, it is necessary to remove the heavy component impurity in the circulating solvent—tar. Usually the first container is used to extract DMF, and the remaining tar containing a very small amount of DMF is in a fluid state above 120°C, and is discharged out of the kettle under heat preservation. Due to the small amount of tar, petrochemical companies generally discharge the tar directly to the ground, then divide it manually, and then send it to an incineration plant for d...

Claims

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Application Information

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IPC IPC(8): C10C1/00C10C1/19F17D1/17
CPCF17D1/17C10C1/00C10C1/19
Inventor 江荣生龙沛沛唐庆霖
Owner 福建省环境工程有限公司
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