CN1101714C - Process for recovering chemical raw material or other materials - Google Patents

Abstract

The present invention relates to a process for recovering chemical raw materials or completely recovering taken materials when the materials are dewatered. The present invention is characterized in that the materials on the upper layer are collected into a material chamber, and water on the lower layer is automatically discharged by using the characteristic of the chemical materials floating on the water surface.

Description

A kind of technology that reclaims industrial chemicals, material

The present invention relates to a kind of industrial chemicals, during material dewatering, can reclaim the technology that is pulled away material fully.

Generally, after raw material spherical tank (storage tank) charging, raw material (as benzene, toluene, gasoline etc.) static a period of time, treat raw material and water stratification after, bottom valve is opened the lower layer of water of draining.In Chemical Manufacture, after we use benzene, toluene or other organic solvent extraction materials.Material need be washed totally, divides when dried up, often adopts heating, static, the process of separatory.When separatory, no matter static quality all can carry material secretly.

All there are a common difficult problem in no matter spherical tank draining, or the separatory draining in the Chemical Manufacture, when that is exactly draining, carry partial material secretly thereby (1) causes waste, make the process units per unit area yield low, and consumption is increased, and increases enterprise product cost.(2) increase sewage disposal, brought problem of environmental pollution.(3) material of Pai Chuing runs into burning things which may cause a fire disaster, will lead to fire explosion.

At present, raw material spherical tank (storage tank) draining, the technology of utilization is to adopt automatic liquid separatnig valve draining, operative employee's execute-in-place monitoring simultaneously.In the Chemical Manufacture, when part organic solvent that recovery is taken out of because of separatory dewaters and material, the technology of utilization, often: water and the material of carrying secretly are together entered in the recovery pond, the upper strata be dissolved with the solvent of machine material long-pending how after, siphon away and reclaim with vacuum, lower layer of water is drained.

Also all there is different problems in these two kinds of technology.Automatically during the liquid separatnig valve draining, still can take a small amount of material out of, when material and water proportion near the time, separating effect is just poor, will be entrained with more material so, secondly, in Chemical Manufacture, use the vacuum aspiration recovered material, (1) on the organic solvent of dissolving material is bubbled through the water column, it can not be pumped fully, and during operation, toxic gas is harmful to operative employee's health.(2) solvent that floats on the surface is volatile, makes the organic solvent proportion increase that residue has been dissolved material sink under water, and can't reclaim, and be drained with one in water.Therefore, still thoroughly do not solve wastage of material, consume highly, cost increases, environmental pollution and can not operate Wan problem such as work.

Purpose of the present invention solves the dehydration of spherical tank (storage tank) industrial chemicals exactly, and the wastage of material that material causes is carried in the draining of chemical plant installations separatory secretly, and consuming increases, environmental pollution and operation unsafe problems.

The present invention is achieved in that as shown in Figure 1 sign is as follows among the figure:

1----reclaims casing 2----draining (dirt) valve 3----overflow pipe

4----dehydration, separating tube 5----water pipe 6----low-pressure steam pipe

7----blow-down pipe 8----showering guilding valve 9----material goes out valve

10----reclaimed materials pump 11----dividing plate 12,14----visor

13----illuminating lamp A----water, material are collected chamber B----material and are collected the chamber

Dehydration of spherical tank (storage tank) raw material and the draining of chemical plant installations separatory flow into water, material collection chamber A through drainpipe 4.Water is in lower floor, and material is on the upper strata, and the material liquid level is by overflow pipe 3 controls, and its height, enters material with regard to the top of flowing through dividing plate 11 and collects chamber B when material reach a certain height a little more than reclaiming casing internal partition height, and water is still stayed the lower floor of water, material collection chamber A.Collect among the A of chamber at water, material, the position of material and water interface, material is collected material liquid level among the B of chamber, and the central horizontal line of visor is concordant with recovery casing internal partition top above can observing by visor 12,14, so that observation material inflow material is collected the situation in the chamber.Apart from the below visor at visor 200-500mm place, top, be used to observe the interface of water and material.

(dirt) valve 2 is controlled.When needing water and material interface to reduce, then open draining (dirt) valve 2, discharge unit water is used for preventing that water from flowing through dividing plate 11 tops and entering material collection chamber B.In material was collected chamber B, material was long-pending after a certain amount of, goes out valve 9 by material, and reclaimed materials pump 10 is returned spherical tank or device, realizes that material reclaims.When recovery casing 1 need be got angry repair welding, available water pipe 5, low-pressure steam pipe 6 is clean with its boiling.

The effect right and wrong that the present invention brought often show.1。It can carry out second dehydration to spherical tank (storage tank) dehydration, has reclaimed material simultaneously, has solved pollution problem, most critical be to have solved because of spherical tank (storage tank) dehydration, carry that material is met naked light, thunderbolt leads to this very dangerous problem of fire explosion secretly.2。The present invention is used for the draining of chemical plant installations separatory, has reclaimed material, prevents organic dark agent volatilization, has reclaimed material and dark agent fully, stops or has reduced the injury of organic dark agent to operative employee's health.Reduced the cost of product, for enterprise increases benefit.3。Present technique can significantly reduce environmental pollution after implementing, and has improved the safety coefficient of device, has reduced the possibility that explosion accident takes place.4。This recovered material technology, device structure are simple, simple to operation, need not too big investment.A series of problems that it dewaters to solving, separatory causes have positive effect.

Embodiment 1: the operative employee opens the spherical tank bottom valve, the spherical tank bottom water flows out through delivery pipe 4 and flows into water, material collection chamber A, after row's a period of time, water is carried material secretly, after draining water, this moment, existing many materials entered among water, the material collection chamber A, and upper materials is long-pending behind certain altitude, flow into material by dividing plate 11 tops and collect among the B of chamber, lower layer of water is discharged from overflow pipe 3.More and more when water, when material tails off, prevent that water from flowing into dividing plate 11 tops and entering among the material collection chamber B, can open draining (dirt) valve 2, reduce the interface of water and material.Interfacial position and material are collected the liquid level of material among the B of chamber, can observe by visor 12,14, and illuminating lamp 13 provides light source for reclaiming casing 1.Collect among the B of chamber when material, after the accumulation of material, open bleeder valve 9, reclaimed materials pump 10 is returned spherical tank with material and is realized reclaiming.Showering guilding valve 8 is to intake the usefulness of draining in order to prevent that material from collecting in the B of chamber.Reclaim casing 1, the repair welding of need getting angry, then water pipe 5, and 6 boilings of low-pressure steam pipe are clean.

Embodiment 2: chemical production device, and organic solvent, extraction material, heating, washing, static layering, separatory, water is carried material secretly and is flowed into water through entering pipe 4 at this moment, and material is collected among the A of chamber.Upper materials is long-pending behind certain altitude, flows into material by partition 11 tops and collects among the B of chamber, and lower layer of water flows out from overflow pipe 3.More and more when water, when material tails off, prevent that water from flowing through dividing plate 11 tops and entering among the material collection chamber B, can open draining (dirt) valve 2, discharge section water reduces water and material interface.Interfacial position and material are collected the liquid level of material among the B of chamber, can observe by visor 12,14, and illuminating lamp provides light source for reclaiming casing 1.Collect among the B of chamber when material, after the accumulation of material, open bleeder valve 9, reclaimed materials pump 10 is returned reactor with material or certain scurries realization recovery in the device.Showering guilding valve 8 is to intake the usefulness of draining in order to prevent that material from collecting in the B of chamber.Reclaim casing 1, fire tube 5 is then used in the repair welding of need getting angry, and 6 boilings of low-pressure steam pipe are clean.

Claims (4)

1, a kind of technology that reclaims industrial chemicals, material, in the spherical tank bottom liquid separatnig valve is set, in chemical plant installations, the recovery pond recovered material is set, it is characterized in that: the spherical tank dehydration, the draining of chemical plant installations separatory is pooled to the water of collection box, enters in the material collection chamber, in this chamber, water and material layering, upper materials flows into the material collection chamber of reclaiming casing through the dividing plate top, utilizes material transfer equipment to send chemical plant installations back to.

2, a kind of technology that reclaims industrial chemicals, material according to claim 1 is characterized in that: in a side that reclaims casing visor is set, the central horizontal line of this visor is concordant with recovery casing internal partition top.

3, a kind of technology that reclaims industrial chemicals, material according to claim 2 is characterized in that: observe the visor of water and material interface, be arranged at the visor below concordant with the dividing plate top, its spacing is 200 ~ 500mm.

4, a kind of technology that reclaims industrial chemicals, material according to claim 1 is characterized in that: reclaim casing overflow stream pipe and highly be higher than the dividing plate height.