CN212158200U

CN212158200U - Methanol gas condensing device in biodiesel production

Info

Publication number: CN212158200U
Application number: CN202020721713.8U
Authority: CN
Inventors: 叶活动; 阙锋才; 王长南
Original assignee: LONGYAN ZHUOYUE NEW ENERGY DEVELOPMENT CO LTD
Current assignee: LONGYAN ZHUOYUE NEW ENERGY DEVELOPMENT CO LTD
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-12-15
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a methanol gas condensing device in biodiesel production, which adopts a vertical tube array condenser structure and comprises an upper head, an upper head flange, a lower head flange, an upper tube plate, a lower tube plate, a heat exchange tube, a cylinder, a baffle plate, a fixed rod and a water distribution plate; the upper end enclosure with a cooling water outlet at the top and the lower end enclosure with a cooling water inlet at the bottom are respectively connected with the cylinder body through upper and lower end enclosure flanges; the heat exchange tubes are provided with a plurality of tubes which are uniformly arranged in a row and welded on the upper tube plate and the lower tube plate; a plurality of baffle plates are locked on a fixing rod with threads through screw caps and are uniformly staggered in the height direction; a water distribution disc provided with a plurality of small holes which are uniformly distributed is arranged on the lower seal head; the methanol gas inlet and the exhaust port are arranged on the upper part of the barrel, the methanol liquid outlet and the methanol liquid exhaust port are arranged on the lower part of the barrel, and the barrel is fixed on a workshop steel frame through a hanging frame uniformly arranged on the outer wall of the barrel. The utility model discloses the condensation is effectual, the cooling water passageway washs easily, the welding seam corrodes the back easy maintenance high-efficient.

Description

Methanol gas condensing device in biodiesel production

Technical Field

The utility model relates to a biodiesel apparatus for producing, concretely relates to methanol gas congeals device in biodiesel production.

Background

Methanol is used in the production process of biodiesel, and hot methanol gas is often condensed into methanol liquid through heat exchange of cooling water in the processes of recovering and purifying the methanol. Because the shell and tube condenser generally adopts horizontal structure, there is the defect that the heat transfer is poor, the condensation effect is not good, consequently, condenser among the prior art generally adopts spiral plate condenser's structure, and this spiral plate structure's condenser has the advantage that heat transfer coefficient is higher, the condensation is effectual, but the defect that exists is: on one hand, the condensation effect is obviously poor after the water channel is used for a period of time because the water channel is easy to block and scale and is difficult to clean; on the other hand, once the welding seam is corroded to cause inner leakage, the welding cannot be repaired, and only the welding seam can be discarded.

Disclosure of Invention

The utility model aims at providing a methanol gas condensing device in the efficient biodiesel production of condensation effectual, cooling water passageway wash easy, easy maintenance after the welding seam corrodes.

In order to realize the purpose, the methanol gas condensation device in the biodiesel production adopts a vertical tube still condenser structure, which comprises an upper end enclosure, an upper end enclosure flange, a lower end enclosure flange, an upper tube plate, a lower tube plate, a heat exchange tube, a cylinder, a baffle plate, a fixed rod and a water distribution plate; the upper end enclosure with a cooling water outlet at the top and the lower end enclosure with a cooling water inlet at the bottom are respectively connected with the cylinder body through an upper end enclosure flange and a lower end enclosure flange; the heat exchange tubes are provided with a plurality of heat exchange tubes which are uniformly arranged in a row and welded on the upper tube plate and the lower tube plate; a plurality of baffle plates are arranged, are locked on the fixing rod with the threads through screw caps and are arranged in a uniformly staggered manner along the height direction; the water distribution disc provided with a plurality of small holes which are uniformly distributed is arranged on the lower end enclosure; the upper portion of barrel is equipped with methyl alcohol gas import and gas vent, and the lower part is equipped with methyl alcohol liquid export and methanol liquid clean out mouth, and this barrel is fixed on the workshop steelframe through establishing a plurality of stores pylons of evenly arranging on its outer wall.

The number of the hangers is four.

As methanol gas is faintly acid, all methanol gas condensing devices in the biodiesel production with the structure are made of 304 stainless steel, and welding seams are welded by stainless steel argon arc welding.

The utility model discloses methanol gas condensing unit adopts vertical tubulation condenser structure in the biodiesel production, has following technical characterstic and beneficial effect:

(1) different from a horizontal type tube array condenser, the condenser is vertically installed, the shell pass of methanol gas is changed, a plurality of baffle plates are additionally arranged on the shell pass, the residence time of the methanol gas is greatly prolonged, the methanol gas can fully exchange heat with cooling water and is condensed into liquid, and the condensing effect is good.

(2) The water distribution plate is additionally arranged at the cooling water inlet, so that the cooling water is uniformly distributed, the short circuit is avoided, and the condensation effect is favorably improved.

(3) The cooling water is easy to clean and remove scale in the pipe.

(4) The device has the advantages of simple structure, low manufacturing cost, easy repair welding after the welding line of the tube plate is corroded, convenient and efficient maintenance and greatly reduced equipment maintenance cost.

Drawings

FIG. 1 is a schematic structural diagram of a methanol gas condensing device in biodiesel production according to the present invention.

Reference numerals: the device comprises a cooling water outlet 1, an upper seal head 2, an upper seal head flange 3, an upper tube plate 4, an exhaust port 5, a methanol gas inlet 6, a heat exchange tube 7, a cylinder 8, a hanger 9, a baffle plate 10, a fixing rod 11, a methanol liquid outlet 12, a methanol liquid exhaust port 13, a lower tube plate 14, a lower seal head flange 15, a water distribution disc 16, a lower seal head 17 and a cooling water inlet 18.

Detailed Description

The methanol gas condensing device in the biodiesel production of the present invention will be further described in detail with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 1, the methanol gas condensation device in the biodiesel production of the present invention adopts a vertical tube still condenser structure, which comprises an upper head 2, an upper head flange 3, a lower head 17, a lower head flange 15, an upper tube plate 4, a lower tube plate 14, a heat exchange tube 7, a cylinder 8, a baffle plate 10, a fixing rod 11 and a water distribution plate 16; an upper seal head 2 with a cooling water outlet 1 at the top and a lower seal head 17 with a cooling water inlet 18 at the bottom are respectively connected with the cylinder body 8 through an upper seal head flange 3 and a lower seal head flange 15; the heat exchange tubes 7 are uniformly arranged in a row and welded on the upper tube plate 4 and the lower tube plate 14; a plurality of baffle plates 10 are arranged, are locked on a fixing rod 11 with threads by screw caps and are arranged in a staggered manner along the height direction; the water distribution disc 16 provided with a plurality of small holes which are uniformly distributed is arranged on the lower end enclosure 17; the upper portion of barrel 8 is equipped with methyl alcohol gas import 6 and gas vent 5, and the lower part is equipped with methyl alcohol liquid export 12 and methyl alcohol liquid drain hole 13, and this barrel 8 is fixed on the workshop steelframe through four stores pylons 9 of establishing on its outer wall.

When the water cooling device is used, the cooling water pump is started firstly, cooling water from the circulating water tank enters from the cooling water inlet 18 at the bottom of the condenser, and after passing through the newly-added water distribution disc 16 with the drilled holes, water flow is uniformly distributed, so that the amount of the cooling water entering each heat exchange tube 7 is basically the same; after heat exchange is carried out between cooling water and hot methanol gas, hot water flows out from a cooling water outlet 1 at the top and flows to a cooling water tower for cooling; hot methanol gas from the methanol distillation tower enters from a methanol gas inlet 6 at the upper part of a shell pass, flows away from the shell pass, exchanges heat with cooling water in a heat exchange tube 7 in the process of flowing through a plurality of newly added baffle plates 10 which are arranged in a staggered way, is condensed into methanol liquid, flows out from a methanol liquid outlet 12 at the lower part of the shell pass, and then flows to a methanol receiving tank.

In the use process, if a cooling water channel is blocked and scales, the upper flange 3 of the unsealing head can be detached, the upper sealing head 2 is removed, and the heat exchange tube 7 is cleaned by high-pressure water; if the upper tube plate 4 and the lower tube plate 14 are to be inspected for corrosion, the upper seal head 2 and the lower seal head 17 can be detached, and the welding seams can be inspected; if the welding line is corroded, the exhaust port 5 is opened, residual methanol liquid in the shell side is exhausted from the methanol exhaust port 13, then the residual methanol liquid is cleaned and replaced by water, all pipe orifices for connecting the condenser and the system are disconnected by using blind plates, and then repair welding is carried out.

Claims

1. A methanol gas condensing device in biodiesel production is characterized in that: the condenser adopts a vertical type tubular condenser structure and comprises an upper seal head, an upper seal head flange, a lower seal head flange, an upper tube plate, a lower tube plate, a heat exchange tube, a cylinder, a baffle plate, a fixed rod and a water distribution disc; the upper end enclosure with a cooling water outlet at the top and the lower end enclosure with a cooling water inlet at the bottom are respectively connected with the cylinder body through an upper end enclosure flange and a lower end enclosure flange; the heat exchange tubes are provided with a plurality of heat exchange tubes which are uniformly arranged in a row and welded on the upper tube plate and the lower tube plate; a plurality of baffle plates are arranged, are locked on the fixing rod with the threads through screw caps and are arranged in a uniformly staggered manner along the height direction; the water distribution disc provided with a plurality of small holes which are uniformly distributed is arranged on the lower end enclosure; the upper portion of barrel is equipped with methyl alcohol gas import and gas vent, and the lower part is equipped with methyl alcohol liquid export and methanol liquid clean out mouth, and this barrel is fixed on the workshop steelframe through establishing a plurality of stores pylons of evenly arranging on its outer wall.

2. The methanol gas condensing apparatus in biodiesel production according to claim 1, wherein: the number of the hangers is four.