CN212282928U

CN212282928U - Dicyclopentadiene rectifying device

Info

Publication number: CN212282928U
Application number: CN202020733139.8U
Authority: CN
Inventors: 姜东成; 刘玉国; 高军亮; 王海涛
Original assignee: Shandong Kerong Chemical Co ltd
Current assignee: Shandong Kerong Chemical Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-01-05
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to a dicyclopentadiene rectifier unit belongs to chemical industry equipment technical field, including the retort, the retort is equipped with outward and presss from both sides the cover, the retort heats through letting in steam pressing from both sides the cover, the retort bottom passes through the pipe connection and sprays the jar, it is equipped with a toroidal tube to spray jar interior upper portion, the lower extreme of toroidal tube is equipped with a plurality of shower nozzles, the toroidal tube passes through inlet tube and external intercommunication, be equipped with the water pump on the inlet tube, be equipped with an air distribution plate in the below of the inside toroidal tube of spray tank, a plurality of air outlets have been seted up on the air distribution plate, the below of the inside air distribution plate of spray tank is equipped with an inlet pipe, one row of discharge gate has been seted up on inlet pipe upper portion, the inlet pipe passes through feed inlet and external intercommunication, be equipped with the draught fan on the feed inlet. The utility model discloses separation dicyclopentadiene purity is higher, the loss is lower.

Description

Dicyclopentadiene rectifying device

Technical Field

The utility model relates to a dicyclopentadiene rectifier unit belongs to chemical industry equipment technical field.

Background

Rectification is the most mature and widely applied separation technology in petrochemical production, but the energy consumption in the rectification process is huge, and it is estimated that 40-70% of the energy consumption in the chemical process is used for separation, and the rectification energy consumption accounts for 95% of the energy consumption.

Dicyclopentadiene (DCPD) is one of the important components of the C9 fraction produced by ethylene cracking and is also the dimerization product of Cyclopentadiene (CPD) in the C5 fraction. The ethylene propylene diene monomer is mainly used for medicines, pesticides, resin products, third monomers of ethylene propylene diene monomer and the like. Dicyclopentadiene in industry is divided into chemical grade and polymeric grade dicyclopentadiene. The polymerization-grade dicyclopentadiene contains impurities such as dimethyl dicyclopentadiene, monomethyl dicyclopentadiene, water and the like, the quality of dicyclopentadiene products is influenced, and the dicyclopentadiene needs to be purified and refined in order to provide high-purity dicyclopentadiene for high-end product application. The separation and separation by using a common rectifying tower are difficult, the purity is insufficient, and the energy consumption loss is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve exist among the prior art not enough, provide a dicyclopentadiene rectifier unit that separation purity is higher, the loss is lower.

The utility model discloses a realize through following technical scheme:

the utility model provides a dicyclopentadiene rectifier unit, including the retort, the retort is equipped with outward and presss from both sides the cover, the retort heats through letting in steam at pressing from both sides the cover, retort bottom end passes through the pipe connection and sprays the jar, it is equipped with a toroidal tube to spray jar inside upper portion, the lower extreme of toroidal tube is equipped with a plurality of shower nozzles, the toroidal tube passes through inlet tube and external intercommunication, be equipped with the water pump on the inlet tube, be equipped with an air distribution plate in the below of the inside toroidal tube of jar that sprays, a plurality of air outlets have been seted up on the air distribution plate, the below that sprays the inside air distribution plate of jar is equipped with an inlet pipe, one row of discharge gate has been seted up on inlet pipe upper portion, the inlet pipe passes through feed inlet and external intercommunication, be equipped with the draught fan on.

The utility model discloses relative raw materials gas carries out quick cooling and sprays for raw materials gas liquefaction, then distills, sieves out impurity such as the big dimethyl dicyclopentadiene of ratio dicyclopentadiene granule, monomethyl dicyclopentadiene at last again, and whole process separation purity is higher, the loss is lower.

Further preferably, a plurality of partition plates are transversely and alternately arranged in the impurity removing tower.

Preferably, the filler is a molecular sieve, the diameter of the molecular sieve is within the range of 0.3nm to 10nm, the contact time of the gas and the molecular sieve is greatly prolonged, and the impurity removal effect is better.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the air distribution plate.

In the figure: 1. a spray tank; 2. a water inlet pipe; 3. a water pump; 4. an annular tube; 5. a spray head; 6. a wind distribution plate; 7. an air outlet; 8. a feed inlet; 9. an induced draft fan; 10. a feed pipe; 11. a discharge port; 12. a distillation tank; 13. a jacket; 14. a water vapor outlet; 15. an impurity removal tower; 16. a partition plate; 17. a filler; 18. and (4) a discharge port.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in figures 1 and 2, a dicyclopentadiene rectifying device comprises a distillation tank 12, a jacket 13 is arranged outside the distillation tank 12, the distillation tank 12 is heated by introducing steam into the jacket 13, the bottom end of the distillation tank 12 is connected with a spray tank 1 through a pipeline, an annular pipe 4 is arranged at the upper part in the spray tank 1, a plurality of spray heads 5 are arranged at the lower end of the annular pipe 4, the annular pipe 4 is communicated with the outside through a water inlet pipe 2, a water pump 3 is arranged on the water inlet pipe 2, an air distribution plate 6 is arranged below the annular pipe 4 in the spray tank 1, a plurality of air outlets 7 are arranged on the air distribution plate 6, a feed pipe 10 is arranged below the air distribution plate 6 in the spray tank 1, a row of discharge outlets 11 are arranged at the upper part of the feed pipe 10, the feed pipe 10 is communicated with the outside through a feed inlet 8, a draft fan 9 is arranged on the feed inlet 8, the top end of the distillation tank, the impurity removing tower 15 is filled with a filling material 17, the filling material 17 is a molecular sieve, the diameter of the molecular sieve is within the range of 0.3nm to 10nm, and the top end of the impurity removing tower 15 is provided with a discharge hole 18.

The working process is as follows:

the dicyclopentadiene which is just prepared is gaseous and contains impurities such as dimethyl dicyclopentadiene, monomethyl dicyclopentadiene, moisture and the like, the mixed gas is introduced into the spraying tank 1, the mixed gas is sprayed out from a plurality of discharge holes 11 on the feeding pipe 10, and the air distribution plate 6 plays a role in dispersing the mixed gas, so that the mixed gas is more uniformly distributed in the spraying tank 1. Meanwhile, water is pumped into the annular pipe 4 through the water inlet pipe 2 by the water pump 3, and is sprayed out by the plurality of spray heads 5, mixed gas is rapidly cooled to be liquefied, then the mixed liquid enters the distillation retort 12, the temperature is controlled, water in the mixed liquid is evaporated and is discharged from the water vapor outlet 14, the boiling points of other components are higher than that of water, the temperature is raised, other components are distilled and enter the impurity removing tower 15, and by utilizing the principle that the diameter of the inner hole of the molecular sieve is larger than that of a water molecule and is smaller than that of the molecular diameter of dicyclopentadiene, a small amount of water molecules remained in the mixed gas are absorbed by the molecular sieve, and similarly, the diameters of impurity molecules such as dimethyl dicyclopentadiene and monomethyl dicyclopentadiene are also smaller than that of the sieve holes of the molecular sieve and can also be absorbed. The interlaced baffles 16 can prolong the contact time of the mixed gas and the molecular sieve, the absorption effect is the best, and finally, the high-purity dicyclopentadiene gas is discharged and recycled through the discharge hole 18.

In the description of the present invention, the terms "inside", "outside", "up", "down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and does not require the present invention to be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a dicyclopentadiene rectifier unit, includes retort (12), and retort (12) are equipped with jacket (13) outward, and retort (12) are through letting in steam at jacket (13) and are heated, its characterized in that: the utility model discloses a solar energy water heater, including retort (12), retort (12) bottom is through pipe connection spraying tank (1), upper portion is equipped with a toroidal tube (4) in spraying tank (1), the lower extreme of toroidal tube (4) is equipped with a plurality of shower nozzles (5), toroidal tube (4) communicate with the external world through inlet tube (2), be equipped with water pump (3) on inlet tube (2), be equipped with one cloth wind board (6) below spraying tank (1) inside toroidal tube (4), a plurality of air outlet (7) have been seted up on cloth wind board (6), be equipped with an inlet pipe (10) below spraying tank (1) inside cloth wind board (6), a row of discharge gate (11) have been seted up on inlet pipe (10) upper portion, inlet pipe (10) communicate with the external world through feed inlet (8), be equipped with draught fan (9) on feed inlet (8), retort (12) top links to each other through pipeline and edulcoration tower (15), be full of, the top end of the impurity removing tower (15) is provided with a discharge hole (18).

2. The dicyclopentadiene rectification apparatus of claim 1, wherein: a plurality of clapboards (16) are transversely arranged inside the impurity removing tower (15) in a staggered manner.

3. The dicyclopentadiene rectification apparatus according to claim 1 or 2, characterized in that: the filler (17) is a molecular sieve, and the diameter of the molecular sieve is within the range of 0.3nm to 10 nm.