阅读说明：本技术 一种沥青空冷汽化冷却器 (Asphalt air cooling vaporization cooler ) 是由 杨雪松 于 2020-12-28 设计创作，主要内容包括：本发明涉及一种沥青空冷汽化冷却器,为一体式结构,包括空气冷凝冷却器和沥青冷却器两部分,其特征在于,所述空气冷凝冷却器设置在沥青冷却器的上方,之间通过隔板隔开,隔板上设有水蒸气排气帽。其有益效果是：采用以空气为冷却介质的空气冷凝冷却器替代以循环水为冷却介质的水蒸气冷凝冷却器,简化了配管设计,不仅节能而且节省水资源；沥青冷却器采用盘管冷却代替蛇管冷却,可以减少阻力,便于吹扫和放空；特别适用于北方地区使用或备用,采用空冷替代水冷也是北方节能的重要措施之一。(The invention relates to an asphalt air-cooling vaporization cooler which is of an integrated structure and comprises an air condensation cooler and an asphalt cooler. The beneficial effects are as follows: an air condensing cooler taking air as a cooling medium is adopted to replace a steam condensing cooler taking circulating water as a cooling medium, so that the piping design is simplified, the energy is saved, and the water resource is saved; the asphalt cooler adopts coil cooling instead of coil cooling, so that resistance can be reduced, and purging and emptying are facilitated; the air cooling system is particularly suitable for being used or standby in northern areas, and the air cooling is adopted to replace water cooling and is one of important measures for energy conservation in northern areas.)

1. An asphalt air-cooling vaporization cooler is of an integrated structure and comprises an air condensation cooler and an asphalt cooler, and is characterized in that the air condensation cooler is arranged above the asphalt cooler and is separated by a partition plate, and a steam exhaust cap is arranged on the partition plate;

the air condensing cooler is a finned tube type heat exchanger, the top of the air condensing cooler is provided with an exhaust hole, the middle of the air condensing cooler is a finned tube, the lower part of the air condensing cooler is provided with a circulating water inlet and a circulating water outlet, and a steam condensate outlet is arranged above the lowest end partition plate;

the asphalt cooler is a coil type heat exchanger, a make-up water inlet, an asphalt inlet, a steam purging inlet and an emptying pipe are sequentially arranged on the left side from top to bottom, and a steam condensate inlet is sequentially arranged on the right side from bottom to top and is connected with a steam condensate outlet through a steam condensate liquid discharge pipe and an asphalt outlet.

Technical Field

The invention relates to the technical field of tar distillation in the coking industry, in particular to an asphalt air-cooled vaporization cooler.

Background

About 50 to 60 percent of medium temperature pitch is generally generated in the coal tar processing process, and belongs to a bulk product for tar processing. The modified asphalt is a main downstream product of medium-temperature asphalt and is mainly used for producing prebaked anodes in the electrolytic aluminum industry and preparing battery rods or electrode binders. The softening point of the medium-temperature asphalt is more than 80 ℃, the softening point of the modified asphalt is more than 105 ℃, and the viscosity of the asphalt is greatly changed along with the temperature. Currently, in the asphalt production process, an asphalt vaporization cooler is usually selected as asphalt cooling equipment. The asphalt vaporization cooler is composed of two parts, the upper part is a steam condensation cooler, the lower part is an asphalt cooler, water is heated and vaporized in the cooling process of the lower part of the asphalt, the steam enters the steam condensation cooler on the upper part and is condensed and cooled by circulating water to form condensate, and then the condensate returns to the lower part, so that closed cycle of the water and the steam is formed, and the following defects are mainly existed:

1) the upper part is a water vapor condensation cooler with a cooling medium of circulating water, and a certain amount of water resources are required to be consumed;

2) the lower part is an asphalt cooler, a coil pipe or a similar heat exchanger is usually selected, although the heat exchange area in unit volume is large, the number of elbows of an asphalt pipe pass pipeline is large, the resistance is very large, and the blockage is easily caused;

3) with the continuous progress of the technology, the heat recovery capacity of the heat exchange equipment is continuously improved, so that the cooling load of the existing asphalt vaporization cooler is smaller and smaller, and the original design can not meet the new change requirement.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention solves the technical problem of providing the asphalt air-cooling vaporization cooler, and the air condensation cooler which takes air as a cooling medium is adopted to replace a steam condensation cooler which takes circulating water as a cooling medium, so that the piping design is simplified, the energy is saved, and the water resource is saved; the asphalt cooler adopts coil cooling instead of coil cooling, so that resistance can be reduced, and purging and emptying are facilitated.

In order to achieve the purpose, the invention adopts the following technical scheme:

an asphalt air-cooling vaporization cooler is of an integrated structure and comprises an air condensation cooler and an asphalt cooler, and is characterized in that the air condensation cooler is arranged above the asphalt cooler and is separated by a partition plate, and a steam exhaust cap is arranged on the partition plate;

the air condensing cooler is a finned tube type heat exchanger, the top of the air condensing cooler is provided with an exhaust hole, the middle of the air condensing cooler is a finned tube, the lower part of the air condensing cooler is provided with a circulating water inlet and a circulating water outlet, and a steam condensate outlet is arranged above the lowest end partition plate;

the asphalt cooler is a coil type heat exchanger, a make-up water inlet, an asphalt inlet, a steam purging inlet and an emptying pipe are sequentially arranged on the left side from top to bottom, and a steam condensate inlet is sequentially arranged on the right side from bottom to top and is connected with a steam condensate outlet through a steam condensate liquid discharge pipe and an asphalt outlet.

Compared with the prior art, the invention has the beneficial effects that:

1) an air condensing cooler taking air as a cooling medium is adopted to replace a steam condensing cooler taking circulating water as a cooling medium, so that the piping design is simplified, the energy is saved, and the water resource is saved;

2) the asphalt cooler adopts coil cooling instead of coil cooling, so that resistance can be reduced, purging and emptying are facilitated, and operation is facilitated;

3) the air cooling system is particularly suitable for selection or standby in northern areas, and the air cooling is adopted to replace water cooling and is one of important measures for energy conservation in northern areas.

Drawings

Fig. 1 is a schematic diagram of the structural principle of the present invention.

In the figure: 1-asphalt inlet 2-asphalt outlet 3-circulating water inlet 4-circulating water outlet 5-make-up water inlet 6-steam purging inlet 7-steam exhaust cap 8-exhaust hole 9-steam condensate outlet 10-steam condensate inlet 11-steam condensate drain pipe 12-blow-down pipe 13-finned pipe

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1, the asphalt air-cooling vaporization cooler related to the invention is of an integrated structure and comprises an air condensation cooler and an asphalt cooler, wherein the air condensation cooler is arranged above the asphalt cooler and is separated by a partition plate, and a water vapor exhaust cap 7 is arranged on the partition plate, so that steam can be exhausted and condensate can be prevented from flowing backwards;

the air condensing cooler is a finned tube type heat exchanger, the top of the air condensing cooler is provided with an exhaust hole 8 (used for exhausting non-condensable gas-air), the middle of the air condensing cooler is provided with a finned tube 13, the lower part of the air condensing cooler is provided with a circulating water inlet 3 and a circulating water outlet 4 (for standby, the water cooling auxiliary function is achieved, circulating water enters from the circulating water inlet 3 and exits from the circulating water outlet 4, and the air condensing cooler is convenient to use when the capacity of the air condensing cooler is insufficient), and a steam condensate outlet 9 is arranged on the;

the asphalt cooler is a coil type heat exchanger, a make-up water inlet 5 (used for adding water before start-up or supplementing water after vaporization in the use process) and an asphalt inlet 1, a steam purging inlet 6 and an emptying pipe 12 are sequentially arranged on the left side from top to bottom, and a steam condensate inlet 10 and a steam condensate outlet 2 are sequentially arranged on the right side from bottom to top and are connected with the steam condensate outlet 9 through a steam condensate liquid discharge pipe 11.

A cooling process comprising the steps of:

1) preparation work: before start-up, hot water with the temperature of 80-100 ℃ is injected into the shell pass of the asphalt cooler from a supplementing water inlet 5;

2) and (3) cooling asphalt: the asphalt has high softening point and high viscosity, and is convenient to purge and empty, asphalt at about 220 ℃ enters a coil pipe from an asphalt inlet 1, exchanges heat with hot water at 80-100 ℃ of a shell pass, flows out from an asphalt outlet 2 at the lower part of an asphalt cooler, is heated and vaporized, and enters an air condensing cooler at the upper part of the asphalt cooler through a water vapor exhaust cap 7 at the top of the asphalt cooler;

3) condensing and heat exchanging water vapor: the water vapor from the exhaust cap 7 enters the finned tube 13, is condensed and cooled by air to form steam condensate, falls onto a partition plate at the lower part of the air condensing cooler, passes through a steam condensate drain pipe 11 from a steam condensate outlet 9, and enters the shell side of the asphalt cooler from a steam condensate inlet 10 at the lower part of the asphalt cooler to form closed cycle of the water and the water vapor;

4) when the capacity of the air condensing cooler is insufficient, circulating water is fed in from a circulating water inlet 3 and discharged from a circulating water outlet 4, so that the problem of insufficient capacity of the air condensing cooler is solved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.