CN206823236U - Glycerin decoloring device - Google Patents

Abstract

The utility model discloses a glycerin decolorization device, which comprises two plate-type airtight filters, a conveying pump, a receiving tank, a stop valve, a ball valve and a butterfly valve; the plate-type airtight filter is provided with a stainless steel filter screen inside and a mechanical filter outside. Vibration device, on the upper side of the two plate airtight filters are equipped with compressed air pipelines with stop valves and steam inlet pipes, two pipelines with stop valves are led out from the bottom side of the plate type airtight filters, and one is compressed air output The pipeline is connected with the inlet pipeline of another airtight filter, and the other is the outlet pipeline for recovering dilute glycerin to connect with the receiving tank. The bottom of the plate-type airtight filter is equipped with a butterfly valve slag discharge port; the outlet pipeline of the delivery pump is divided into two The inlets of the two plate-type airtight filters are respectively connected, and ball valves are installed on the inlet and outlet pipelines of the delivery pump. The glycerin decolorization device with this structure has the advantages of high degree of automation, low product cost, no pollution to products in the operation process and suitable for large-scale production.

Description

Glycerin decolorization device

technical field

The utility model relates to subsequent refining processing equipment for crude glycerin by-product of biodiesel, in particular to a glycerin decolorization device.

Background technique

Biodiesel by-product crude glycerol contains about 65% glycerol, and also contains fatty acid salt (soap), inorganic salt, oil, biodiesel, pigment and organic matter, etc., after treatment, it is used for evaporation and distillation in the refined production of glycerin , decolorization and other processes to produce glycerin products with content, color (Pt-Co) and other indicators that meet the requirements. In the refined production of glycerin, the decolorization effect of activated carbon is generally better. At present, the commonly used glycerin decolorization device is a plate and frame filter press, which mainly includes filter plates, filter cloths, pressing mechanisms and racks. The glycerin decolorization device with this structure has the following Disadvantages: First, it takes a long time to manually unload the slag, clean the filter cloth and assemble the filter plate, and the labor intensity is high; second, because the filter press is open, the product is easily polluted; third, the use of consumables such as filter cloth and filter paper costs a lot High; intermittent operation, low production capacity, only suitable for small-scale production.

Contents of the invention

The purpose of the utility model is to provide a glycerin decolorization device with high degree of automation, low product cost, no pollution in the operation process and suitable for large-scale production.

In order to achieve the above purpose, the glycerin decolorization device of the present utility model comprises two plate-type airtight filters, delivery pumps, receiving tanks, stop valves, ball valves and butterfly valves; Mechanical vibrating device, on the upper side of the two plate-type airtight filters are equipped with compressed air pipes with stop valves and steam inlet pipes, two pipes with stop valves are led out from the bottom side of the plate-type airtight filters, one for compressed air The output pipeline is connected with the inlet pipeline of another airtight filter, and the other is the outlet pipeline for recovering dilute glycerin to connect with the receiving tank. The bottom of the plate-type airtight filter is equipped with a butterfly valve slag outlet; the outlet pipeline of the delivery pump is divided into two The roads are respectively connected to the inlets of two plate-type airtight filters, and ball valves are installed on the inlet and outlet pipes of the delivery pump.

The above-mentioned glycerin decolorization device has the following technical characteristics and beneficial effects:

1. There is no need for filter cloth and filter paper, saving the cost of consumables.

2. Mechanical vibration removes activated carbon, reduces labor intensity, and basically realizes continuous production.

3. Most of the glycerin adsorbed in activated carbon can be recovered at the same time, reducing production costs.

4. Fully enclosed operation to avoid product contamination during the decolorization process.

Description of drawings

Fig. 1 is the structural representation of the utility model glycerol decolorization device.

Reference signs: plate type hermetic filter 1 , delivery pump 2 , receiving tank 3 , stop valve 4 , ball valve 5 , butterfly valve 6 .

detailed description

The glycerin decolorization device of the present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model glycerin decolorization device shown in Fig. 1 comprises two plate type airtight filter machines 1, conveying pump 2, receiving tank 3, shut-off valve 4, ball valve 5 and butterfly valve 6; Described plate type airtight filter machine 1 is provided with stainless steel strainer plate, with a mechanical vibrating device on the outside, compressed air pipes with cut-off valves 4 and steam inlet pipes are installed on the upper sides of the two plate-type airtight filters 1, and two roads with cut-off pipes are drawn from the bottom side of the plate-type airtight filter 1. The pipeline of the valve 4, one way is the compressed air output pipeline connected to the inlet pipeline of another airtight filter 1, and the other is the outlet pipeline for recovering dilute glycerin connected to the receiving tank 3, and the bottom of the plate-type airtight filter 1 is equipped with a butterfly valve 6 The slag discharge outlet: the outlet pipeline of the delivery pump 2 is divided into two paths and respectively connected to the inlets of the two plate-type airtight filters 1, and ball valves 5 are installed on the inlet and outlet pipelines of the delivery pump 2.

The operation steps during work are as follows:

1. Transport the glycerin with activated carbon to one of the plate-type airtight filters 1 through the delivery pump 2, and filter through the inner stainless steel filter plate. The activated carbon is trapped on the surface of the filter plate and forms a filter cake. The decolorized glycerin is from Outflow from the outlet.

2. After the device has been running for a period of time, as the filter cake on the surface of the filter plate accumulates more and more, the filtration resistance increases, the output decreases, and the feeding is stopped. At this time, the compressed air inlet and outlet stop valve 4 is opened to seal the plate type. The unfiltered residual glycerin in the filter 1 is sent to another plate type airtight filter 1 by pressure, and then the compressed air inlet and outlet shut-off valve 4 is closed.

3. Open another ball valve at the outlet of delivery pump 2, send the glycerin containing activated carbon to another plate-type airtight filter 1 for filtration, open the plate-type airtight filter 1 that drains the residual glycerin through compressed air, and stop the steam inlet and outlet Valve 4, use steam to purge and dissolve the glycerin adsorbed by the activated carbon in the filter plate, dry the activated carbon, and recover the dilute glycerin to the receiving tank 3 to return to the glycerin production system, and then close the steam inlet and outlet stop valve 4.

4. Open the mechanical vibration device of the plate type airtight filter 1, and vibrate the stainless steel filter plate to shake the activated carbon on the filter plate to the bottom of the plate filter 1, then open the butterfly valve 6 at the bottom to discharge the activated carbon, close the butterfly valve 6, and discharge the activated carbon The plate-type hermetic filter 1 is in a circulating standby state.

Claims (1)

1. A glycerin decolorization device is characterized in that: it comprises two plate type airtight filter machines, delivery pump, receiving tank, shut-off valve, ball valve and butterfly valve; Stainless steel screen plate is arranged in the plate type airtight filter machine, peripheral There is a mechanical vibration device. Compressed air pipes with stop valves and steam inlet pipes are installed on the upper sides of the two plate-type airtight filters. Two pipes with stop valves are led out from the bottom side of the plate-type airtight filters. The air output pipeline is connected with the inlet pipeline of another airtight filter, and the other is the recovery of dilute glycerol outlet pipeline connected with the receiving tank. The bottom of the plate-type airtight filter is equipped with a butterfly valve slag outlet; the outlet pipeline of the delivery pump is divided into The two roads are respectively connected to the inlets of two plate-type airtight filters, and ball valves are installed on the inlet and outlet pipes of the delivery pump.