阅读说明：本技术 一种洗油蒸馏装置 (A kind of wash oil device ) 是由 许垒 史争光 张建宁 周涛 李江 李玉川 于 2019-09-30 设计创作，主要内容包括：本发明涉及煤焦油的洗油技术领域,具体涉及一种洗油蒸馏装置,包括有工业萘精馏塔系统,所述工业萘精馏塔系统包括有精馏塔、精馏塔循环泵以及精馏塔加热炉,还包括有洗油蒸馏系统以及真空机组,所述洗油蒸馏系统分别连接工业萘精馏塔系统以及真空机组,所述真空机组用于将洗油塔的内部保持负压状态；洗油蒸馏系统包括有洗油塔、洗油塔再沸器、甲基萘回流槽、甲基萘回流泵以及洗苯洗油冷却器,洗油塔包括五层结构,从上到下依次为第一层结构、第二层结构、第三层结构、第四层结构、第五层结构,在所述第一层结构的上方设有洗油塔塔顶,在所述第五层结构的下方设有洗油塔塔底。本发明一种洗油蒸馏装置,降低了蒸馏煤气的消耗,减少了能源的浪费。(The present invention relates to the washing oil technical fields of coal tar, more particularly to a kind of wash oil device, it include crude naphthalene rectifying tower system, the crude naphthalene rectifying tower system includes rectifying column, rectifying column circulating pump and rectifying column heating furnace, it further include having wash oil system and vacuum pump set, the wash oil system is separately connected crude naphthalene rectifying tower system and vacuum pump set, and the vacuum pump set is used to the inside of washing oil tower keeping negative pressure state；Wash oil system includes washing oil tower, washing oil tower reboiler, methyl naphthalene backflash, methyl naphthalene reflux pump and washes benzene washing oil cooler, washing oil tower includes five-layer structure, it is followed successively by first layer structure, second layer structure, third layer structure, four-layer structure, layer 5 structure from top to bottom, it is equipped with washing oil column overhead in the top of the first layer structure, is equipped with washing oil tower tower bottom in the lower section of the layer 5 structure.A kind of wash oil device of the present invention, reduces the consumption of distillation coal gas, reduces the waste of the energy.)

1. a kind of wash oil device includes crude naphthalene rectifying tower system, the crude naphthalene rectifying tower system includes rectifying Tower, rectifying column circulating pump and rectifying column heating furnace, which is characterized in that it further include having wash oil system and vacuum pump set, The wash oil system is separately connected crude naphthalene rectifying tower system and vacuum pump set, and the vacuum pump set is used for washing oil tower Inside keep negative pressure state；Wash oil system includes washing oil tower, washing oil tower reboiler, methyl naphthalene backflash, methyl naphthalene Reflux pump and benzene washing oil cooler is washed, the washing oil tower includes five-layer structure, is followed successively by first layer structure, second from top to bottom Layer structure, third layer structure, four-layer structure, layer 5 structure are equipped with washing oil column overhead in the top of the first layer structure, Washing oil tower tower bottom is equipped in the lower section of the layer 5 structure；The washing oil tower reboiler include washing oil tower reboiler shell side with And the inside of washing oil tower reboiler shell side is arranged in washing oil tower reboiler tube side, the washing oil tower reboiler tube side；The rectifying The bottom of the suction side connection rectifying column of tower circulating pump, output end are connected to the inside of second layer structure through the first control valve, And shell side of the end simultaneously through the second control valve connection washing oil tower, the rectifying column circulating pump is by rectifying column washing oil by rectifying column Bottom extraction, and rectifying column washing oil is divided into rectifying column washing oil first part and rectifying column washing oil second part conveys, Rectifying column washing oil first part is sent directly into the second layer structure of washing oil tower, and rectifying column washing oil second part is conveyed into washing oil In tower casing journey, for carrying out heat exchange cycle with washing oil tower tower bottom recycle stock；The rectifying column heating furnace is connected separately with washing oil The output end of the shell side of tower, the second control valve and rectifying column circulating pump；Rectifying column washing oil second part after heat exchange is by washing oil Tower casing journey is conveyed into rectifying column heating furnace, and rectifying column heating furnace heats rectifying column washing oil second part, it is heated to 270 ~ It is transmitted back in rectifying column after 290 DEG C, supplies rectifying column heat in a looping fashion；The washing oil tower tower bottom connection washing oil tower bottom circulation Pump, one end of the washing oil tower bottom circulating pump connect washing oil tower tower bottom, other end be separately connected washing oil tower reboiler tube side with And heavy wash oil cooler, the washing oil tower reboiler tube side are separately connected washing oil tower bottom circulating pump and washing oil tower tower bottom, institute State the shell side of the third layer structure of washing oil tower reboiler shell side connection washing oil tower；One end connection of the heavy wash oil cooler is washed Oily tower bottom circulating pump, other end connect heavy wash oil product slot；The washing oil tower bottom circulating pump is by washing oil tower bottom washing oil by washing Oily tower tower bottom extraction, and washing oil tower bottom washing oil is divided into washing oil tower bottom washing oil first part and second, washing oil tower bottom washing oil Point, washing oil tower bottom washing oil first part back flows back into washing oil tower tower bottom through washing oil tower reboiler tube side, realizes and washing oil tower Rectifying column washing oil second part in shell side exchanges heat, and washing oil tower bottom washing oil second part is transported to weight through heavy oil cooler Matter washing oil product slot；One end of the vacuum pump group is connected to the top of methyl naphthalene backflash by exhaust tube, and other end is logical Offgas duct connection external exhaust gas purification device is crossed, for reducing the pressure of washing oil tower.

2. a kind of wash oil device according to claim 1, which is characterized in that the washing oil column overhead, which is separately connected, washes One end of oily overhead condensation cooler and third control valve, the washing oil overhead condensation cooler connects washing oil column overhead, separately Outer one end connects methyl naphthalene backflash, the bottom of the suction side connection methyl naphthalene backflash of the methyl naphthalene reflux pump, and in addition one End connects washing oil column overhead by third control valve respectively, connects methyl naphthalene pan tank by the 4th control valve.

3. a kind of wash oil device according to claim 1, which is characterized in that described to wash the one of benzene washing oil cooler End is separately connected the inside of the third layer structure of washing oil tower, the 4th layer of mechanism and layer 5 structure, and benzene is washed in other end connection Benzene washing oil product slot is washed in the suction side of washing oil drawing pump, the output end connection for washing benzene washing oil drawing pump.

Technical field

The present invention relates to the washing oil technical fields of coal tar, and in particular to a kind of wash oil device.

Background technique

Washing oil is one of the important fraction during coal tar distillation, 230-300 DEG C of boiling range, accounts for about the 4.5- of coal tar 10%, it is a kind of mixture of complexity.

Traditional washing oil reprocessing includes autoclave and tower, is 60 DEG C of low temperature washing oil <, need to be by the 270 of rectifying column output DEG C washing oil is cooled to 60-80 DEG C, and washing oil puts into wash oil device as raw material again later, then by heating, by material There is the problems such as distillation coal gas consumption is higher, and energy consumption is high in secondary separation.

Summary of the invention

In consideration of it, the present invention provides a kind of wash oil device, by the way that the washing oil in rectifying column is direct plungeed into washing oil tower It is distilled, while washing oil tower reboiler being cooperated to exchange heat, reduced the consumption of distillation coal gas, reduce the waste of the energy.

In order to achieve the above objectives, technical scheme is as follows:

The present invention provides a kind of wash oil device, comprising:

A kind of wash oil device includes crude naphthalene rectifying tower system, and the crude naphthalene rectifying tower system includes essence Tower, rectifying column circulating pump and rectifying column heating furnace are evaporated, further includes having wash oil system and vacuum pump set, the washing oil steams The system of evaporating is separately connected crude naphthalene rectifying tower system and vacuum pump set, and the vacuum pump set is used to keep the inside of washing oil tower Negative pressure state；

Wash oil system includes washing oil tower, washing oil tower reboiler, methyl naphthalene backflash, methyl naphthalene reflux pump and washes Benzene washing oil cooler, the washing oil tower includes five-layer structure, is followed successively by first layer structure, second layer structure, third from top to bottom Layer structure, four-layer structure, layer 5 structure are equipped with washing oil column overhead in the top of the first layer structure, the described 5th The lower section of layer structure is equipped with washing oil tower tower bottom；

The washing oil tower reboiler includes washing oil tower reboiler shell side and washing oil tower reboiler tube side, the washing oil tower The inside of washing oil tower reboiler shell side is arranged in reboiler tube side；

The bottom of the suction side connection rectifying column of the rectifying column circulating pump, output end are connected to the through the first control valve The inside of two-layer structure, and shell side of the end simultaneously through the second control valve connection washing oil tower, the rectifying column circulating pump is by rectifying Tower washing oil is extracted out by the bottom of rectifying column, and rectifying column washing oil is divided into rectifying column washing oil first part and rectifying column washing oil the Two parts are conveyed, and rectifying column washing oil first part is sent directly into the second layer structure of washing oil tower, rectifying column washing oil Two parts are conveyed into washing oil tower casing journey, for carrying out heat exchange cycle with washing oil tower tower bottom recycle stock；

The rectifying column heating furnace is connected separately with the defeated of the shell side of washing oil tower, the second control valve and rectifying column circulating pump Outlet；Rectifying column washing oil second part after heat exchange is conveyed by washing oil tower casing journey into rectifying column heating furnace, rectifying column heating furnace pair Rectifying column washing oil second part is heated, and is transmitted back in rectifying column after being heated to 270~290 DEG C, in a looping fashion supply essence Evaporate tower heat；

The washing oil tower tower bottom connects washing oil tower bottom circulating pump, and one end of the washing oil tower bottom circulating pump connects washing oil tower tower Bottom, other end are separately connected washing oil tower reboiler tube side and heavy wash oil cooler, the washing oil tower reboiler tube side point Not Lian Jie washing oil tower bottom circulating pump and washing oil tower tower bottom, the third layer structure of washing oil tower reboiler shell side connection washing oil tower Shell side；One end of the heavy wash oil cooler connects washing oil tower bottom circulating pump, and other end connects heavy wash oil product slot；

The washing oil tower bottom circulating pump is extracted washing oil tower bottom washing oil out by washing oil tower tower bottom, and washing oil tower bottom washing oil is divided into Washing oil tower bottom washing oil first part and washing oil tower bottom washing oil second part, washing oil tower bottom washing oil first part boil again through washing oil tower Device tube side back flows back into washing oil tower tower bottom, and realization exchanges heat with the rectifying column washing oil second part in washing oil tower casing journey, Washing oil tower bottom washing oil second part is transported to heavy wash oil product slot through heavy oil cooler；

One end of the vacuum pump group is connected to the top of methyl naphthalene backflash by exhaust tube, and other end passes through tail gas Pipe connects external exhaust gas purification device, for reducing the pressure of washing oil tower.

As an improvement: the washing oil column overhead is separately connected washing oil overhead condensation cooler and third control valve, One end of the washing oil overhead condensation cooler connects washing oil column overhead, and other end connects methyl naphthalene backflash, the methyl The bottom of the suction side connection methyl naphthalene backflash of naphthalene reflux pump, other end connect washing oil tower tower by third control valve respectively Top connects methyl naphthalene pan tank by the 4th control valve.

As an improvement: described one end for washing benzene washing oil cooler is separately connected the third layer structure of washing oil tower, The inside of four layers of mechanism and layer 5 structure, other end connect the suction side for washing benzene washing oil drawing pump, wash the extraction of benzene washing oil Benzene washing oil product slot is washed in the output end connection of pump.

In conclusion the present invention has following technical effect that

Rectifying column washing oil first part is directly thrown into washing oil tower to distill, rectifying column washing oil second part convey into In washing oil tower casing journey, for carrying out heat exchange cycle with washing oil tower tower bottom recycle stock, washing oil tower bottom washing oil first part is through washing oil Tower reboiler tube side back flows back into washing oil tower tower bottom, realizes and carries out with the rectifying column washing oil second part in washing oil tower casing journey Heat exchange, the consumption of the waste and coal gas of the energy is reduced by multiple heat exchange；

Vacuum pump group is connected to the top of methyl naphthalene backflash, can reduce the pressure in washing oil tower；

It is realized by washing oil overhead condensation cooler, methyl naphthalene backflash and methyl naphthalene reflux pump to methyl naphthalene product Production washes the production of benzene washing oil product by washing benzene washing oil cooler and washing benzene washing oil drawing pump and realize.

Detailed description of the invention

It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art Needed in attached drawing be briefly described.

Fig. 1 is a kind of attachment structure schematic diagram of wash oil device；

Wherein: 1, crude naphthalene rectifying tower system；11, rectifying column；12, rectifying column circulating pump；13, rectifying column heating furnace；2, Wash oil system；21, washing oil tower reboiler；22, methyl naphthalene backflash；23, methyl naphthalene reflux pump；24, washing oil tower；241, it washes Oily column overhead；242, first layer structure；243, second layer structure；244, third layer structure；245 four-layer structures；246, the 5th Layer structure；247, washing oil tower tower bottom；25, benzene washing oil cooler is washed；26, washing oil tower bottom circulating pump；27, the first control valve；28, Two control valves；29, heavy wash oil cooler；210, heavy wash oil product slot；211, washing oil overhead condensation cooler；212, third Control valve；213, the 4th control valve；214, methyl naphthalene pan tank；215, benzene washing oil drawing pump is washed；216, benzene washing oil product slot is washed； 3, vacuum pump group.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

Illustrate exemplary embodiment of the present invention below in conjunction with concrete condition:

Referring to FIG. 1, a kind of wash oil device, includes crude naphthalene rectifying tower system 1, crude naphthalene rectifying tower system 1 Include rectifying column 11, rectifying column circulating pump 12 and rectifying column heating furnace 13, further includes having wash oil system 2 and vacuum Unit 3, wash oil system 2 are separately connected crude naphthalene rectifying tower system 1 and vacuum pump set 3, and vacuum pump set 3 is used for washing oil The inside of tower 24 keeps negative pressure state.

Wash oil system 2 includes washing oil tower 24, washing oil tower reboiler 21, methyl naphthalene backflash 22, methyl naphthalene reflux Pump 23 and wash benzene washing oil cooler 25, washing oil tower 24 includes five-layer structure, is followed successively by first layer structure 242, the from top to bottom Two-layer structure 243, third layer structure 244, four-layer structure 245, layer 5 structure 246 are set in the top of first layer structure 242 There is washing oil column overhead 241, is equipped with washing oil tower tower bottom 247 in the lower section of layer 5 structure 246.

Washing oil tower reboiler 21 includes washing oil tower reboiler shell side and washing oil tower reboiler tube side, washing oil tower reboiler The inside of washing oil tower reboiler shell side is arranged in tube side.

The bottom of the suction side connection rectifying column 11 of rectifying column circulating pump 12, output end are connected to through the first control valve 27 The inside of second layer structure 243, and shell side of the end simultaneously through the second control valve 28 connection washing oil tower 24, rectifying column circulating pump 12 Rectifying column washing oil is extracted out by the bottom of rectifying column 11, and rectifying column washing oil is divided into rectifying column washing oil first part and rectifying Tower washing oil second part is conveyed, and rectifying column washing oil first part is sent directly into washing oil tower 24 by rectifying column circulating pump 12 In second layer structure 243, rectifying column washing oil second part is conveyed into washing oil tower casing journey, for following with washing oil tower tower bottom 247 Ring material carries out heat exchange cycle.

Rectifying column heating furnace 13 is connected separately with the shell side of washing oil tower 24, the second control valve 28 and rectifying column circulating pump 12 Output end；Rectifying column washing oil second part after heat exchange is conveyed by washing oil tower casing journey into rectifying column heating furnace 13, and rectifying column adds Hot stove 13 heats rectifying column washing oil second part, is transmitted back in rectifying column 11 after being heated to 270~290 DEG C, with circulation Mode supplies 11 heat of rectifying column；

Washing oil tower tower bottom 247 connects washing oil tower bottom circulating pump 26, and one end of washing oil tower bottom circulating pump 26 connects washing oil tower tower Bottom 247, other end are separately connected 21 tube side of washing oil tower reboiler and heavy wash oil cooler 29, and washing oil tower reboiler 21 is managed Journey is separately connected 24 bottoming cycle of washing oil tower pump and 24 tower bottom of washing oil tower, and 21 shell side of washing oil tower reboiler connects the of washing oil tower 24 The shell side of three-decker 244；One end of heavy wash oil cooler 29 connects washing oil tower bottom circulating pump 26, and other end connects heavy Washing oil product slot 210.

Washing oil tower bottom circulating pump 26 is extracted washing oil tower bottom washing oil out by washing oil tower tower bottom 247, and washing oil tower bottom washing oil is divided For washing oil tower bottom washing oil first part and washing oil tower bottom washing oil second part, 4 bottom washing oil first part of washing oil through washing oil tower again Boiling 21 tube side of device back flows back into 24 tower bottom of washing oil tower, realizes and the 11 washing oil second part of rectifying column in 24 shell side of washing oil tower It exchanges heat, heat exchange to temperature is between 240~250 DEG C, and washing oil tower bottom washing oil second part is cold through heavy wash oil cooler 29 But 90-100 DEG C is arrived, heavy wash oil product slot 210 is then transported to, becomes heavy wash oil finished product.

The present invention is distilled by the way that rectifying column washing oil first part is directly thrown into washing oil tower 24,1 oil of rectifying column Two parts are conveyed into washing oil tower casing journey, for carrying out heat exchange cycle, washing oil tower bottom 247 with 247 recycle stock of washing oil tower tower bottom Washing oil first part back flows back into washing oil tower tower bottom 247 through 21 tube side of washing oil tower reboiler, in realization and washing oil tower casing journey Rectifying column washing oil second part exchange heat, the consumption of the waste and coal gas of the energy is reduced by multiple heat exchange.

One end of vacuum pump group 3 is connected to the top of methyl naphthalene backflash 22 by exhaust tube, and other end passes through tail gas Pipe connects external exhaust gas purification device, for reducing the pressure of washing oil tower 24.

Washing oil column overhead 241 is separately connected washing oil overhead condensation cooler 211 and third control valve 212, washing oil tower 24 The one end for pushing up condensate cooler connects washing oil column overhead 241, and other end connects methyl naphthalene backflash 22, methyl naphthalene reflux pump 23 Suction side connection methyl naphthalene backflash 22 bottom, other end pass through respectively third control valve 212 connect washing oil column overhead 241, methyl naphthalene pan tank 214 is connected by the 4th control valve 213.

The oil gas of washing oil column overhead 241 is cooled to 70-80 DEG C by methyl naphthalene cooler, into methyl naphthalene backflash 22, Then divide by methyl naphthalene reflux pump 23 for phegma and methyl naphthalene finished product, phegma is conveyed by third control valve 212 Into washing oil column overhead 241, methyl naphthalene finished product is fed in methyl naphthalene pan tank 214, becomes methyl naphthalene finished product.

It is realized by washing oil top condensate cooler 211, methyl naphthalene backflash 22 and methyl naphthalene reflux pump 23 to methyl naphthalene The production of product.

The one end for washing benzene washing oil cooler 25 is separately connected the third layer structure 244 of washing oil tower 24, the 4th layer of mechanism 245 And the inside of layer 5 structure 246, other end connect the suction side for washing benzene washing oil drawing pump 215, wash benzene washing oil drawing pump Benzene washing oil product slot 216 is washed in 215 output end connection.

It is realized by washing oil overhead condensation cooler 211, methyl naphthalene backflash 22 and methyl naphthalene reflux pump 23 to methyl The production of naphthalene product washes the life of benzene washing oil product by washing benzene washing oil cooler 25 and washing benzene washing oil drawing pump 215 and realize It produces.

Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except there is also other identical elements in the process, method, article or equipment for including element.

Specific embodiment provided by the present invention is described in detail above, specific case pair used herein The principle of the present invention and embodiment are expounded, method of the invention that the above embodiments are only used to help understand And its core concept；At the same time, for those skilled in the art, according to the thought of the present invention, in specific embodiment and There will be changes in application range, and to sum up, the contents of this specification are not to be construed as limiting the invention.