JPWO2018149776A5

JPWO2018149776A5 -

Info

Publication number: JPWO2018149776A5
Application number: JP2019543775A
Authority: JP
Publication date: 2022-03-04
Anticipated expiration: 2038-02-12

Claims

A device (10000) suitable for uniformly dividing a fluid (10) into n fluid streams, each containing a gas (11) and a liquid (12), where n is a natural number of 2 or more. , The device (10000)
・ An upright cap (100) whose bottom is partitioned by a plate (900),
An inflow port (200) for the fluid (10) arranged on the boundary side wall of the cap (100), through which the inflow of the fluid (10) is performed in the tangential direction. The inlet (200), which is configured as
-An internal component (300) that is placed upright inside the cap.
-The internal component (300) , together with the inner wall (100) of the cap, forms an annular gap (400) through which the liquid (12) flows.
-The upper edge of the internal component (300) is such that the upper boundary of the internal component (300) and the upper boundary of the cap (100) form the flow path (510) of the gas (11). It terminates above (200) and below the upper boundary of the cap (100).
-The internal component (300) has at least one opening (310) at the top for the inflow of gas (11).
-The lower edge of the internal component ( 300 ) is of the plate (900) such that the lower edge of the internal component (300) and the plate (900) form a flow path (520) of the liquid (12). It ends at the top and
-The internal component (300) has at least one opening (320) at the bottom that is hydraulically connected to the at least one upper opening (310).
Internal parts (300) and
N n guide devices (800) for n fluid flows composed of a liquid (12) and a gas (11), wherein the guide device (800) is said through the opening (320). A guide device that projects into the internal component (300) and has an inlet opening (810) for the liquid (12) and an inlet opening (820) for the gas (11).
Equipped with
An apparatus (10000), characterized in that a swirl breaker (600) for the downflow gas (11) is located inside the internal component (300 ).

A swirl breaker (700) for a liquid (12) having a through opening (710) for the liquid (12) is located in the annular gap (400) below the inlet (200), claim 1. The device according to (10000).

The device according to claim 1 or 2, wherein the n guide devices (800) are tubular spouts or pipe components (1000).

The inlet opening (810) for the liquid (12) is
A slit in the tangential direction, the flow of the liquid (12) produced inside the guide device (800) is the liquid produced in the annular gap (400) by the arrangement of the inlet (200). The slits are arranged so as to be in the same direction as the flow of (12), or
The device according to claim 3, which is a slit in the axial direction.

The swirl breaker (600) for the downflow gas (11) is selected from the group consisting of swirl cloth, structured packing , knitted wire mesh, perforated plate, and deflecting plate, any one of claims 1 to 4. The device described in the section.

It is a flow-down thin film type evaporator (100,000).
-Outer siege shell (2000) and
-N tubes (1000) fixed to the upper tube plate and the lower tube plate, where n is a natural number of 2 or more, and the liquid film can flow down inside the tube (1000). ,
An upper distributor for distributing liquid and gas to the separate pipes (1000),
A supply device (3100) that supplies the heat transfer medium (20) to the tube outer space formed by the outside of the tube (1000) and the shell (2000).
A discharge device (3200) for discharging the cooled heat transfer medium (21) from the pipe outer space, and a discharge device (3200).
-The steam discharge device (4100) for steam (13) and
A liquid discharge device (4200) for the residual liquid (14) that has not been vaporized inside the pipe, and
An apparatus (5000) for separating and collecting residual liquid (14) and vapor (13), and
Equipped with
The upper distribution device for distributing liquid and vapor to individual pipes (1000) is the device (10000) according to any one of claims 1 to 5 , and the bottom of the device (10000). (900) forms an upper tube plate of the flow thin film type evaporator (1000000), and the n guide devices (800) are connected to the n tubes (1000) at the upper end thereof. Alternatively, the flow-down thin film evaporator (100,000), wherein the n guide devices (800) are constituents of the n tubes (1000).

A return device (6000) for recirculating a part of the residual liquid (14) to the distribution device (10000) is further provided, and the return device (6000) is provided.
A mixing device (6100) for mixing the circulating portion of the residual liquid (14) with the fluid (10) before flowing into the dispensing device (10000) is provided.
6. The sixth aspect of the invention, wherein the inlet (210) is different from the inlet (200) and is open to the inlet (210) arranged on the boundary side wall of the cap (100). Flow thin film type evaporator.

The distributor according to any one of claims 1 to 5 in the production and / or post-treatment of a chemical product selected from the group consisting of organic nitro compounds, organic primary amines, isocyanates, polyether polyols, and polycarbonates. Use of 10000), use of the flow-down thin film type evaporator (100,000) according to claim 6 or 7.

The use according to claim 8, wherein the flow-down thin film evaporator (100,000) is used in the post-treatment of the isocyanate for vaporizing the isocyanate.

The vaporization of the isocyanate is used to at least partially remove the isocyanate from the residue-containing distillation bottom flow of the isocyanate production and / or to separate the vaporized monomeric isocyanate fraction from the polymer isocyanate fraction. , The use according to claim 9.