CN2380282Y

CN2380282Y - Evaporator

Info

Publication number: CN2380282Y
Application number: CN 99233234
Authority: CN
Inventors: 黄萍
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-26
Filing date: 1999-04-26
Publication date: 2000-05-31
Anticipated expiration: 2009-04-26

Abstract

The utility model discloses an evaporator for recovering waste solvent, which is composed in turn of an evaporating section, a heating section and a sedimentation bucket form top to bottom, wherein the lower part of the evaporating section is provided with a waste solvent inlet and a steam outlet of clean solvent is arranged on the top end of the evaporating section. The heating section is provided with a heating medium inlet and an insertion opening of a heating device, and a large tube and a small tube are arranged in the heating section. Heating mediums are arranged between the tubes, and the heating device is inserted into the heating mediums through the insertion opening of the heating tube. The lower part of the sedimentation bucket is provided with a slag outlet, and the large tube and the small tube are communicated with the evaporating section and the sedimentation bucket. The utility model has the advantages of simple structure, high efficiency and low cost and can continuously process a large amount of waste solvent without discharging slag.

Description

A kind of evaporimeter

The utility model relates to a kind of evaporimeter, specifically a kind of recovery solvent slop evaporimeter.

At present the recovery principle of solvent slop is to utilize solvent and to be washed the boiling point that dissolves in impurity wherein different, is separated with the method for distilling.The problem that in evaporation process, has impurity gum deposit on heat conductive wall unavoidably.As cooking-pot type simple distillation method is heating jacket outside pot, fills with solvent slop in the pot, has steamed one pot after, cooling is uncapped, with the residue removing of tying in the bottom of a pan; For the scarfing cinder difficulty is reduced, also have at the pot inwall and coat non-viscous paint " Teflen (Teflon) ", can be a skin during scarfing cinder and equally shut down; In pot, put a special sack in advance in addition, do not influence heat transfer, after intact one pot to be distilled, connect a bag band slag and throw away together.Mechanical doctor formula method is to install to stir scraper in pot, reduces the bottoms layer that forms because of the pot inwall.Also allow solvent slop flow down from top to bottom, after the solvent gasification, stay residue in the pipe, scrape with scraper then along the heating tube inwall.Above method labour intensity is big, and single batch processing amount is little, poor working environment, and the thermal efficiency is low.

Goal of the invention of the present utility model provides a kind of not gum deposit, and slagging-off is easy, the evaporimeter that single batch processing amount is big and the thermal efficiency is high.

The utility model is to adopt following technical scheme, it comprises clean solvent outlet, heating agent, heating element, evaporimeter is made up of evaporator section, bringing-up section, sedimentation bucket from top to bottom successively, is provided with the solvent slop import in the bottom of evaporator section, and clean solvent vapo(u)r outlet is located at the top of evaporator section; Be provided with hot coal import, heating element insertion mouth in bringing-up section, and in bringing-up section, be provided with big tubulation, little tubulation; Hot coal places between the tubulation, and heating element inserts mouthful insertion wherein by heat-generating pipe, is provided with slag notch in the bottom of sedimentation bucket; Big tubulation, little tubulation communicate with evaporator section and sedimentation bucket.

Because adopt above technical scheme, the utility model has more perfectly been realized goal of the invention, it is simple in structure, the efficient height, and cost is low, can handle relatively large solvent slop continuously and does not need deslagging.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Embodiment:

The concrete structure of the utility model evaporimeter is, shell is by the steel ellipse head, cylinder and awl bucket constitute, evaporimeter is from top to bottom successively by evaporator section 5, bringing-up section 8, sedimentation bucket 12 is formed, evaporator section 5 is mainly gas-phase space, the solvent place that vaporization separates with the vapour foam is provided, be provided with solvent slop import 16 in the bottom of evaporator section 5, clean solvent vapo(u)r outlet 3 is located at the top of evaporator section 5, and near clean solvent vapo(u)r outlet 3, be provided with the foam removal net, evaporator section 5 tops are provided with nozzle for thermometer 1 and vacuum meter takes over 4, for safety, operation is stopped up and is met accident behind the preventer, the top is provided with flame-arrester vent plug 2, is provided with to observe liquid level visor 7 on evaporator section 5, maintenance hand hole 6; Bringing-up section 8 is for having the steel tubular heat exchanger of certain heat transfer area, difference is, tubulation is not of uniform size to be caused, it is inconsistent to be convenient to be subjected to thermal material to be heated, form different severe, realize Natural Circulation, on bringing-up section 8, be provided with heating agent import and export 15, heating element insertion mouth 10, and in bringing-up section 8, being provided with big tubulation 9, little tubulation 14, big tubulation 9 is evenly to arrange with little tubulation 14.The heating agent conduction oil places between the tubulation, and thermoelectric heating device inserts mouthful 10 insertions wherein by heating element; The effect of sedimentation bucket 12 provides enough spaces and gathers residue and be convenient to discharge residue, is provided with manhole 11 on sedimentation bucket 12, and the bottom of sedimentation bucket 12 is provided with slag notch 13; Big tubulation 9, little tubulation 14 communicate with evaporator section 5 and sedimentation bucket 12.

The course of work of the present utility model is: the solvent slop that needs to handle enters between the condensate cooler pipe, carry out entering in the evaporimeter of negative pressure along solvent slop import 16 after heat exchange improves temperature with the hot solvent steam that comes out from evaporimeter epimere evaporator section 5 tops in the pipe, and import by conduit in the big tubulation 9 of bringing-up section 8 in the evaporimeter, charging is by the liquid level ball float control of indoor connection charging aperture; Because temperature is lower, descends along big tubulation 9, and be heated, rise along little tubulation 14, be heated to boiling, vaporization rapidly, the solvent vapour of vaporization is after the foam separation is caught at the evaporimeter top, go out evaporimeter from the end socket top, enter in the condensate cooler pipe, quilt enters condensate cooler after being managed the lower solvent slop partial condensation cooling of outer temperature again, further be cooled to room temperature by the outer cooling water adverse current of pipe, and be collected in the vacuum groove; Nonvolatile component such as resin, powder, pigment, residue, the space turbulence of middle and lower part liquid phase, circulation in evaporimeter, along with increasing of solvent slop treating capacity, concentration, viscosity are cumulative, again because the awl bucket can hold a certain amount of residue, so evaporimeter is a collection of can be handled relatively large solvent slop continuously and not need deslagging, when wanting deslagging, stop heating, strengthen vacuum, make in the residue residual solvent by self (residual oil temperature), heat further gasifies, simultaneously, residue and conduction oil temperature drop are to certain temperature, (conduction oil temperature and residue temperature are more or less the same); Shut down, open the awl end residual cake valve next day to normal temperature, can make residue be flow regime gravity flow deslagging, and do not need by hand or mechanical deslagging; After residue had been arranged, charging again realized the lower whorl cycling.

This evaporimeter has following characteristics;

Material is heated in pipe and seethes with excitement, capacity is little and heat transfer area is big, make solvent slop in pipe, be in good turbulence state, minimizing forms the chance of detention layer and gum deposit at tube wall, simultaneously, when identical heat transfer area, this kind of evaporimeter is much smaller than the volume of other evaporimeters, it is little to take up space, and investment is also few.

Tubulation is not of uniform size, and the solvent slop heating degree is differed, and causes the interior material severe of big or small tubulation to differ, and impels the liquid phase material Natural Circulation, guarantees good boiling and vaporized state in all even device of residual liquid material concentration (viscosity).Simultaneously, in case operate miss, the bassoon difficulty or ease are stopped up, can be not dangerous.

Add the sedimentation bucket, the residue major part is deposited on non-heating space in the bucket, make evaporimeter continous-stable operation in long-time relatively, till material concentration (viscosity) reached and wants the deslagging degree in bucket, this point made the every batch processing inventory of unit far above other batch process solvent slop technology.

Negative-pressure operation has reduced the corresponding heating heat-conducting oil temperature that also reduced of boiling point (during 75% vacuum, boiling point on average descends about 40%) of solvent, reduces the heat loss to the external world, improves the thermal efficiency.The most important is, for boiling point solvent below 150 ℃, when 75% vacuum, only 110 ℃ of boiling points, when heating-up temperature was set 220 ℃, the temperature difference also had 90 ℃, still can keep enough evaporation rates, operation had both made and has only contained the minute quantity Tianna solution in the residue or all be resin or paint with this understanding, also can make the good flow regime of liquid material maintenance in the device, and can be in the heat transfer tube wall gum deposit.

Claims

1, a kind of evaporimeter, it comprises clean solvent outlet [3], heating agent, heating element, it is characterized in that evaporimeter is made up of evaporator section [5], bringing-up section [8], sedimentation bucket [12] from top to bottom successively, be provided with solvent slop import [16] in the bottom of evaporator section [5], clean solvent vapo(u)r outlet [3] is located at the top of evaporator section [5]; Be provided with heating agent in bringing-up section [8] and import and export [15], heating element insertion mouthful [10], and in bringing-up section [8], be provided with big tubulation [9], little tubulation [14]; Heating agent places between the tubulation, and heating element inserts mouthful [10] by heat-generating pipe and inserts wherein, is provided with slag notch [13] in the bottom of sedimentation bucket [12]; Big tubulation [9], little tubulation [14] communicate with evaporator section [5] and sedimentation bucket [12].

2, a kind of evaporimeter according to claim 1 is characterized in that being provided with visor [7], hand hole [6] on evaporator section [5], and is provided with the foam removal net near clean solvent vapo(u)r outlet [3].

3, a kind of evaporimeter according to claim 1 is characterized in that the big tubulation [9] in the bringing-up section [8] is arranged for even with little tubulation [14].

4, a kind of evaporimeter according to claim 1 is characterized in that being provided with manhole [11] on sedimentation bucket [12].

5, a kind of evaporimeter according to claim 1 is characterized in that being provided with flame-arrester vent plug [2] at the top of evaporator section [5].