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Secondary evaporator series production device in tar distillation and its application

A technology of secondary evaporator and production device, which is applied in the direction of tar processing by distillation method, etc., to achieve the effects of convenient operation, safe operation and rapid replacement.

Active Publication Date: 2017-03-22
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a series production device of secondary evaporators in tar distillation, which integrates two sets of independent production systems, solves the problem of the series use of two sets of independent production systems, and realizes a single When the set of evaporators and subsequent series equipment fail, the rapid switching between the two systems ensures the non-stop and uninterrupted production of the tar distillation system

Method used

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  • Secondary evaporator series production device in tar distillation and its application
  • Secondary evaporator series production device in tar distillation and its application

Examples

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Effect test

Embodiment 1

[0038] A series production device for secondary evaporators in tar distillation, comprising a first-stage evaporator connected in sequence, a parallel I system production part and a II system production part, respectively connected to the parallel I system production part and II system production part The second-stage evaporation part of system I and the second-stage evaporation part of system II;

[0039] A first three-way pipe 13 is provided between the production part of the I system and the second-stage evaporation part of the I system, and a second three-way pipe 19 is provided between the production part of the II system and the second-stage evaporation part of the II system, The first three-way pipe 13 and the second three-way pipe 19 are connected.

[0040] The first-stage evaporator includes a raw material tar tank 1, a first-stage plunger pump 2, a tubular heating furnace 3, an anhydrous tar tank 4, and a first-stage evaporator 5 connected in sequence.

[0041] The I syste...

Embodiment 2

[0047] According to the second evaporator tandem production device in the tar distillation described in Example 1, the difference is that the discharge port of the tubular heating furnace 8 of the I system and the input port of the two-stage evaporator 10 of the I system are different A steam purge valve 27 of the I system is provided between the two; a steam purge valve 28 of the II system is provided between the discharge port of the tube heating furnace 9 of the II system and the feed port of the second-stage evaporator 11 of the II system.

Embodiment 3

[0049] A working method in tar distillation using the secondary evaporator series production device as described in Examples 1 and 2, including the following steps:

[0050] The production department of the I system is connected in series with the two-stage evaporation part of the I system to form the I system; the production department of the system II is connected in series with the two-stage evaporation part of the II system to form the II system;

[0051] When I system and II system work in parallel:

[0052] Open the first tar control valve 12 and the first feed valve 14, close the first control valve 15, and make the I system work;

[0053] Open the second tar control valve 18 and the second feed valve 20, close the second control valve 17 to make the II system work;

[0054] When the second stage evaporation part of the I system fails, the first feed valve 14 is closed; the first control valve 15 and the second control valve 17 are opened to realize rapid switching to the II syst...

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Abstract

The invention relates to a secondary evaporator series production device in tar distillation. The secondary evaporator series production device comprises a one-stage evaporation part, an I system production part, an II system production part, an I system two-stage evaporation part and an II system two-stage evaporation part, which are connected sequentially, wherein the I system production part and the II system production part are connected in parallel; the I system two-stage evaporation part and the II system two-stage evaporation part are respectively connected with the I system production part and the II system production part which are connected in parallel; a first three-way pipe is arranged between the I system production part and the I system two-stage evaporation part, and a second three-way pipe is arranged between the II system production part and the II system two-stage evaporation part; the first three-way pipe is connected with the second three-way pipe. The secondary evaporator series production device adopts two parallel or switchable two-stage evaporation parts and utilizes a pair of three-way pipes to realize fast switch. When a failure the two-stage evaporation parts of the production device happens, the fast switch of the two parallel two-stage evaporation parts is realized by regulating the three-way pipes and the control valve, and the continuous production of a tar distillation system is ensured.

Description

Technical field [0001] The invention relates to a secondary evaporator series production device in tar distillation and its application, and belongs to the technical field of tar distillation equipment. Background technique [0002] At present, the processing and production of tar in the coking plant uses the traditional domestic distillation process. The tar distillation process is to use a plunger pump to pump the raw material tar after standing and heating into the tube furnace, and then enter the evaporation after preheating. Distillation in the distillation vessel and fraction tower, using the different boiling points of the components in the raw material tar, to achieve effective separation of the components, to obtain the required light oil and three-mix distillate. The tar distillation process is relatively simple, with a single system and few equipment. In the existing production process, tar distillation is divided into two independent systems, which do not interfere w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C1/04
CPCC10C1/04
Inventor 田茂林邓群张希隆石荣翔张帅梁亚锋
Owner LAIWU IRON & STEEL GRP
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