CN217103725U

CN217103725U - Modified asphalt apparatus for producing

Info

Publication number: CN217103725U
Application number: CN202123297157.XU
Authority: CN
Inventors: 朱传平
Original assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Current assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-08-02
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a modified asphalt apparatus for producing, including heat-carrying agent heating furnace, reation kettle, modification groove, heat-carrying agent heating furnace, reation kettle, modification groove pass through the tube coupling, set up the heater in the reation kettle, and the heat-carrying agent heating furnace provides the heat-carrying agent for the heater. The utility model has the advantages that: the reaction kettle is divided into a heating mixing area and a reaction area by the arrangement of the partition plate, so that heating and reaction are completed in the same reaction kettle, the heat supply required by the reaction is ensured, and the time and the space required by the reaction are also ensured.

Description

Modified asphalt apparatus for producing

Technical Field

The utility model belongs to the technical field of the pitch production, especially, relate to a modified pitch apparatus for producing.

Background

The typical production methods of modified asphalt at home and abroad mainly comprise a vacuum flash evaporation method and a thermal polycondensation method. Among them, the vacuum flash evaporation method is not ideal in product quality and is rarely used at present, so that the thermal polycondensation method is gradually popularized.

The thermal polycondensation method can be divided into a kettle type heating method and a tube furnace heating method according to different heating modes, wherein the kettle type heating method is to place a reaction kettle in a heating furnace, see fig. 1, the multiple kettles are connected in series for operation, the reaction kettle is directly heated by using flue gas after fuel gas combustion, the actual control difficulty is higher, and the asphalt is coked in the kettle and even the situation that the reaction kettle is burnt through occurs occasionally.

The tube furnace heating method is to directly heat asphalt in a tube by using flame in a hearth, as shown in figure 2, due to uneven heating, the asphalt is inevitably coked on the inner wall of the tube, so that the resistance of a heating furnace system is increased, the furnace needs to be frequently shut down and coke cleaning is needed, and normal production is influenced.

Disclosure of Invention

For overcoming the defects of the prior art, the utility model aims to provide a modified asphalt production device, which realizes the control of asphalt heating temperature and delays the coking of equipment and pipelines.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

a modified asphalt production device comprises a heat carrier heating furnace, a reaction kettle and a modified tank, wherein the heat carrier heating furnace, the reaction kettle and the modified tank are connected through pipelines, a heater is arranged in the reaction kettle, the heat carrier heating furnace heats a heat carrier, and the heat carrier heating furnace conveys the heat carrier to the heater through a pipeline.

The heater is of a pipeline structure.

The heater is of a coil structure.

The system also comprises a heat carrier circulating pump and an asphalt circulating pump, wherein the heat carrier circulating pump is connected to a pipeline between the heat carrier heating furnace and the reaction kettle, and the asphalt circulating pump is connected to an outlet pipeline of the reaction kettle.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a heat-carrying agent heating furnace provides higher temperature heating heat-carrying agent through the fuel burning, and the heat-carrying agent rerum natura is stable, and difficult coking is rotten, with the indirect pitch that supplies with of heat, makes it take place the reaction in milder environment to reduce its coking, be favorable to the long-term steady operation of device.

The device for producing the modified asphalt has reasonable process and simple operation, and can meet the product quality requirement. The utility model discloses a heat-carrying agent heating pitch, heating temperature is moderate, and temperature control is accurate, can delay equipment, pipeline coking, and the operating cycle is long, and economic benefits is better.

Drawings

FIG. 1 is a schematic flow diagram of a kettle heating process for producing modified asphalt.

In fig. 1: 1-1# heating furnace 2-1# reaction kettle 3-2# heating furnace 4-2# reaction kettle.

FIG. 2 is a schematic flow diagram of a tube furnace heating process for producing modified asphalt.

In fig. 2: 1-a reaction kettle 2-a heating furnace 3-a modification tank 4-a circulating pump 5-a product pump.

FIG. 3 is a schematic view of a production flow of an apparatus for producing upgraded asphalt.

In fig. 3: 1-heating medium heating furnace 2-reaction kettle 3-modifying tank 4-heating medium circulating pump 5-asphalt circulating pump 6-modified asphalt product pump 7-pipeline 8-heater.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.

Referring to fig. 3, the modified asphalt production device comprises a heat carrier heating furnace 1, a reaction kettle 2 and a modification tank 3, wherein the reaction kettle 2 is of a vertical structure, the heat carrier heating furnace 1, the reaction kettle 2 and the modification tank 3 are connected through a pipeline 7, a heater 8 is arranged in the reaction kettle 2, and the heat carrier heating furnace 1 provides a heat carrier for the heater 8. In the heating furnace 1 for heat medium, fuel directly supplies heat to the heat medium, and the heat medium is indirectly contacted with asphalt by the heater 8. The heat carrier is inorganic salt, and the heat carrier can be inorganic salt or a mixture of more than two inorganic salts.

Examples

Referring to fig. 3, the modified asphalt production device mainly comprises a heat carrier heating furnace 1, a reaction kettle 2, a modifying tank 3, a heat carrier circulating pump 4, an asphalt circulating pump 5, a modified asphalt product pump 6, a pipeline 7 and a heater 8, wherein an outlet pipeline 7 of the heat carrier heating furnace 1 is connected with the heater 8 arranged in the reaction kettle 2, the heat carrier circulating pump 4 is connected with the outlet pipeline 7 of the heat carrier heating furnace 1, the outlet pipeline 7 at the bottom of the reaction kettle 2 is connected with the modifying tank 3 through the asphalt circulating pump 5, the pipeline 7 between the asphalt circulating pump 5 and the modifying tank 3 is divided into two paths, one path returns to the reaction kettle 2 and is connected with the upper part of the reaction kettle 2, and the other path is connected with the modifying tank 3; an outlet pipeline 7 of the upgrading tank 3 is connected with a pump 6 for upgrading asphalt products. Heater 8 is for arranging the coil structure in reation kettle 2, and the coil is the spiral and arranges, and the coil entry sets up in coil export below, ensures that can empty the heat-carrying agent in heater 8 when stopping, also enables the pitch heating more evenly simultaneously. The heater 8 may have other configurations.

The medium temperature asphalt raw material enters the upper part of a reaction kettle 2 through a pipeline 7, is mixed with circulating asphalt in the reaction kettle 2, is indirectly heated to a proper temperature by a heat carrier in a heater 8 and reacts, is pumped out from the bottom of the reaction kettle 2 by an asphalt circulating pump 5, returns a part of the mixture to the reaction kettle 2, sends a part of the mixture to a modification tank 3, further reacts in the modification tank 3, and is pumped out from the bottom of the modification tank 3 by a modified asphalt product pump 6 to obtain a modified asphalt product. And a byproduct flash oil is obtained from the tops of the reaction kettle 2 and the modification tank 3.

Inlet and outlet temperatures of the heat carrier heating furnace 1: above 350 ℃; temperature of reaction vessel 2: 360-380 ℃; temperature of reforming tank 3: 350-370 ℃; the heating temperature precision of the asphalt in the reaction kettle 2 is controlled to be +/-20 ℃ of the target temperature.

Claims

1. The modified asphalt production device is characterized by comprising a heat carrier heating furnace, a reaction kettle and a modification tank, wherein the heat carrier heating furnace, the reaction kettle and the modification tank are connected through a pipeline, a heater is arranged in the reaction kettle, the heat carrier heating furnace heats a heat carrier, and the heat carrier heating furnace conveys the heat carrier to the heater through a pipeline.

2. The apparatus for producing upgraded asphalt of claim 1, wherein the heater has a pipe structure.

3. The apparatus for producing upgraded asphalt of claim 1, wherein the heater is of a coil structure.

4. The apparatus for producing the modified asphalt according to claim 1, further comprising a heat carrier circulating pump and an asphalt circulating pump, wherein the heat carrier circulating pump is connected to a pipeline between the heat carrier heating furnace and the reaction kettle, and the asphalt circulating pump is connected to an outlet pipeline of the reaction kettle.