CN212152194U

CN212152194U - Overheat methanol gas generating device in biodiesel continuous production

Info

Publication number: CN212152194U
Application number: CN202020443607.8U
Authority: CN
Inventors: 叶活动; 李俊雄; 陈丹
Original assignee: LONGYAN ZHUOYUE NEW ENERGY DEVELOPMENT CO LTD
Current assignee: LONGYAN ZHUOYUE NEW ENERGY DEVELOPMENT CO LTD
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-15
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses an overheated methanol gas generating device in the continuous production of biodiesel, a vaporized methanol generator body is provided with a liquid methanol inlet, a heating medium inlet and outlet, a silk screen defoaming filler filling port, a vaporized methanol outlet, a liquid level meter, a low-boiling-point grease outlet and a thermometer, a methanol distributor with a plurality of uniformly distributed through holes is arranged at the upper part in the body, and the positions of all the through holes correspond to the solid plate surface of a tube plate on a heat exchange tube array below the through holes; a wire mesh defoaming filler and a cylindrical wire mesh defoaming filler support frame without holes at the periphery are arranged at the outlet of the vaporized methanol, a notch is reserved between the wire mesh defoaming filler and the vaporized methanol generator body, and a row of uniformly distributed small holes are arranged at the lowest part of the support frame; the low boiling-point oil and fat collecting pit of taking the level gauge is established to the body bottom, and the methyl alcohol gas that smugglies secretly in vaporization methyl alcohol gas and the low boiling-point oil and fat collecting pit gets into silk screen defoaming filler from the breach of silk screen defoaming filler support frame. The utility model discloses difficult coking and carbon deposition, convenient operation is high-efficient, and the energy consumption is low.

Description

Overheat methanol gas generating device in biodiesel continuous production

Technical Field

The utility model relates to a biodiesel production facility, concretely relates to overheated methyl alcohol gas generating device in biodiesel continuous production.

Background

The domestic biodiesel is obtained by taking waste animal and vegetable oil and methanol as raw materials, performing esterification, ester exchange, impurity removal and purification processes to obtain a mixture of fatty acid methyl ester, and performing reduced pressure rectification, impurity removal and purification. CN105001999B discloses a method for producing biodiesel by continuous esterification of waste oil, wherein animal and vegetable oil is preheated and fed from the top of an esterification tower, the waste oil flowing from top to bottom and methanol steam flowing from bottom to top flow in the tower through a plurality of layers of sieve plates in reverse flow contact and collide to generate esterification reaction, the temperature of vaporized methanol and the reaction temperature are 230-, the vaporized methanol superheater is easy to coke and form carbon to influence the heat transfer efficiency, so that the superheater needs to be shut down for manual cleaning every five months or so to influence the power production efficiency. Therefore, it is necessary to develop a device for generating superheated methanol gas in the continuous production of biodiesel, which can ensure the continuous production and can not generate coking.

Disclosure of Invention

The utility model aims at providing an overheated methyl alcohol gas generating device in biodiesel continuous production that difficult coking is coked and is carbonized, convenient operation is high-efficient, the energy consumption is low.

In order to realize the purpose, the overheating methanol gas generating device in the continuous production of the biodiesel comprises a vaporizing methanol generator body; the device comprises a vaporized methanol generator body, a liquid methanol distributor and a low-boiling-point grease distributor, wherein the vaporized methanol generator body is provided with a liquid methanol inlet a, a heating medium outlet b, a heating medium inlet c, a wire mesh defoaming filler filling port d, a vaporized methanol outlet e, a liquid level meter upper port f, a liquid level meter lower port g, a low-boiling-point grease outlet h and a thermometer interface i; the vaporized methanol recovery device is characterized in that a wire mesh defoaming filler and a wire mesh defoaming filler support frame are arranged at a vaporized methanol outlet e, the wire mesh defoaming filler support frame is cylindrical, the periphery of the wire mesh defoaming filler support frame is not perforated, a notch is reserved between the wire mesh defoaming filler support frame and a vaporized methanol generator body, a row of uniformly distributed small holes are formed in the lowest position of the support frame, so that low-boiling-point grease is ensured to smoothly flow to a low-boiling-point grease collection pool, and the vaporous low-boiling-point grease carried in recovered methanol steam is further intercepted while the low-boiling-point grease is recovered in a centralized manner; the bottom of the vaporized methanol generator body is provided with a low-boiling-point oil and fat collecting pool with a liquid level meter, and the vaporized methanol gas and the methanol gas carried in the low-boiling-point oil and fat collecting pool enter the wire mesh defoaming filler from a gap of the wire mesh defoaming filler supporting frame; and a thermometer i is arranged between the heat exchange tube array and the silk screen defoaming filler support frame and is used for monitoring the temperature of the heated methanol gas and the low-boiling oil.

The oblique angle of the cut between the wire mesh defoaming filler support frame and the vaporized methanol generator body is 30-60 degrees.

The methanol without grease flows out from the vaporized methanol outlet e and then is heated to the temperature of 230 ℃ and 240 ℃ required by the reaction by the two-stage high-temperature vaporized methanol superheater, and finally the production of the superheated vaporized methanol is finished. Because the methanol steam generating device effectively collects low-boiling-point oil, the device avoids the coking of carbon deposition in the device in the high-temperature overheating process of the methanol steam, ensures that the methanol high-temperature superheater behind the device keeps good heat exchange efficiency, saves heat energy, and reduces the frequency of cleaning and maintenance of the superheater.

The utility model discloses overheated methyl alcohol gas generating device has following technical characterstic and beneficial effect in the biodiesel continuous production:

1. the liquid distributor is arranged at the liquid methanol inlet in the device, so that the methanol is uniformly and initially distributed in the upper tube plate without falling into the tube, the effective surface of heat transfer can be effectively improved, and further the vaporization efficiency is improved.

2. The evaporation methanol outlet is provided with a wire mesh defoaming filler and a support frame with a small hole, and the bottom of the device is provided with a low-boiling grease collecting tank, so that valuable low-boiling grease in the recovered methanol can be intercepted on one hand, and on the other hand, the low-boiling grease is prevented from entering the methanol high-temperature superheater for coking to influence the normal production.

3. The silk screen removes the foam and packs the setting in the support frame, and gaseous phase methyl alcohol export sets up directly over silk screen removes foam and packs support frame end cover center, and the dismouting of packing is simple, easy operation.

4. The wire mesh defoaming filler support is cylindrical, the periphery of the wire mesh defoaming filler support is not provided with holes, the lowest part of the wire mesh defoaming filler support is provided with a row of small holes, and a notch of 30-60 degrees is reserved between the small holes and the vaporizing device cylinder body, so that the vaporized methanol can enter a subsequent methanol superheater from a vaporized methanol outlet through the wire mesh defoaming filler while the low-boiling-point oil smoothly flows to the low-boiling-point oil collecting pool.

5. The recycling of the low-boiling oil not only reduces the production cost, but also solves the problem of coking of the superheater in the process of vaporizing the oil-containing recovered methanol.

Drawings

FIG. 1 is a schematic view of the structure of the superheated methanol gas generator in the continuous production of biodiesel according to the present invention.

Fig. 2 is a schematic view of the structure in the direction of a-a in fig. 1.

Reference numerals: the device comprises a methanol distributor 1, a heat exchange tube array 2, a wire mesh defoaming filler 3, a wire mesh defoaming filler support frame 4, a low-boiling-point oil and fat collecting pool 5, a liquid methanol inlet a, a heating medium outlet b, a heating medium inlet c, a wire mesh defoaming filler filling port d, a vaporized methanol outlet e, a liquid level meter upper port f, a liquid level meter lower port g, a low-boiling-point oil and fat outlet h and a thermometer interface i.

Detailed Description

The superheated methanol gas generator in the continuous production of biodiesel according to the present invention will be described in detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1-2, the superheated methanol gas generator in the continuous production of biodiesel according to the present invention comprises a vaporized methanol generator body, which is provided with a liquid methanol inlet a, a heating medium outlet b, a heating medium inlet c, a wire mesh defoaming filler filling port d, a vaporized methanol outlet e, a level meter upper port f, a level meter lower port g, a low boiling point oil and fat outlet h, and a thermometer interface i; the upper part in the vaporized methanol generator body is provided with a methanol distributor 1, a heat exchange array tube 2 is arranged below the methanol distributor 1, the methanol distributor 1 is provided with a plurality of uniformly distributed through holes, and the positions of all the through holes correspond to the solid plate surface of the upper tube plate of the heat exchange array tube, so that methanol uniformly falls down and is distributed on the upper tube plate of the array tube to avoid falling into the tube, and the methanol can be completely vaporized; a wire mesh defoaming filler 3 and a wire mesh defoaming filler support frame 4 are arranged at the position of a vaporized methanol outlet e, the wire mesh defoaming filler support frame 4 is cylindrical and is not perforated, a row of uniformly distributed small holes are arranged at the lowest position, and a 30-60-degree notch is reserved between the wire mesh defoaming filler support frame 4 and the vaporized methanol generator body so as to ensure that low-boiling-point grease smoothly flows to a low-boiling-point grease collecting pool 5, and mist low-boiling-point grease carried in the recovered methanol vapor is further intercepted while the low-boiling-point grease is recovered in a centralized manner, so that the mist low-boiling-point grease is prevented from entering a subsequent methanol; the bottom of the vaporized methanol generator body is provided with a low-boiling-point oil and fat collecting pool 5 with a liquid level meter, vaporized methanol gas and methanol gas carried in the low-boiling-point oil and fat collecting pool 5 enter a wire mesh defoaming filler 3 from a gap of a wire mesh defoaming filler supporting frame 4, and are discharged when the liquid level of low-boiling-point oil and fat reaches the half height of an upper port f of the liquid level meter and a lower port g of the liquid level meter; a thermometer i is arranged between the heat exchange tube array 2 and the wire mesh defoaming filler support frame 4 and is used for monitoring the temperature of heated methanol gas and low-boiling oil and maintaining the temperature at 80-110 ℃, the methanol cannot be vaporized when the temperature is too low, and part of the oil and fat can be vaporized when the temperature is too high.

Claims

1. An overheated methyl alcohol gas generating device in biodiesel continuous production, characterized by: it comprises a vaporized methanol generator body; the device comprises a vaporized methanol generator body, a liquid methanol distributor and a low-boiling-point grease distributor, wherein the vaporized methanol generator body is provided with a liquid methanol inlet a, a heating medium outlet b, a heating medium inlet c, a wire mesh defoaming filler filling port d, a vaporized methanol outlet e, a liquid level meter upper port f, a liquid level meter lower port g, a low-boiling-point grease outlet h and a thermometer interface i; the vaporized methanol recovery device is characterized in that a wire mesh defoaming filler and a wire mesh defoaming filler support frame are arranged at a vaporized methanol outlet e, the wire mesh defoaming filler support frame is cylindrical, the periphery of the wire mesh defoaming filler support frame is not perforated, a notch is reserved between the wire mesh defoaming filler support frame and a vaporized methanol generator body, a row of uniformly distributed small holes are formed in the lowest position of the support frame, so that low-boiling-point grease is ensured to smoothly flow to a low-boiling-point grease collection pool, and the vaporous low-boiling-point grease carried in recovered methanol steam is further intercepted while the low-boiling-point grease is recovered in a centralized manner; the bottom of the vaporized methanol generator body is provided with a low-boiling-point oil and fat collecting pool with a liquid level meter, and the vaporized methanol gas and the methanol gas carried in the low-boiling-point oil and fat collecting pool enter the wire mesh defoaming filler from a gap of the wire mesh defoaming filler supporting frame; and a thermometer i is arranged between the heat exchange tube array and the silk screen defoaming filler support frame and is used for monitoring the temperature of the heated methanol gas and the low-boiling oil.

2. The superheated methanol gas generator in the continuous production of biodiesel according to claim 1, wherein: the oblique angle of the cut between the wire mesh defoaming filler support frame and the vaporized methanol generator body is 30-60 degrees.