CN202898287U

CN202898287U - Powdered acrylonitrile-butadiene rubber nitrile water recovering equipment

Info

Publication number: CN202898287U
Application number: CN2012205186874U
Authority: CN
Inventors: 储银亮; 江立峰; 吴忠影; 胡斌; 胡斌斌; 章卫东; 许旭东; 吕飚
Original assignee: Huangshan Hualan Technology Co Ltd
Current assignee: Huangshan Hualan Technology Co Ltd
Priority date: 2012-10-11
Filing date: 2012-10-11
Publication date: 2013-04-24
Anticipated expiration: 2022-10-11

Abstract

The utility model discloses powdered acrylonitrile-butadiene rubber nitrile water recovering equipment which comprises a polymerizing pot, a condenser, a nitrile water storing groove and a vacuum pump, wherein a mixed gas phase of acrylonitrile remained in mucilage and water is extracted to sequentially enter into the condenser and the nitrile water storing groove, and trace of uncooled acrylonitrile monomer and water steam are discharged into the atmosphere from a chimney through a water seal groove. A filter is a cylinder body of which two ends are sealed, an inlet is formed above the left end of the cylinder body, an outlet is formed under the right end of the cylinder body, the cylinder body is internally provided with a filter basket, the nitrile water in the nitrile water storing groove leads into the filter, and the filtered nitrile water is pumped into the polymerizing pot. According to the equipment, the nitrile water is directly pumped into the polymerizing pot by a negative pressure, and a mucilage transporting pump is eliminated, so that the cost can be reduced; and the nitrile water in the filter is high in charge and low in discharge, when the filter is cleaned after the nitrile water is pumped, and the container is less in stored liquid, i.e. the container is less in brought material liquid after the filter bracket is lifted up, so that the equipment not only is environment-friendly, but also is energy-saving and consumption-reducing.

Description

A kind of Powdered acrylonitrile-butadiene rubber nitrile water-recovery apparatus

Technical field

The utility model relates to a kind of Powdered acrylonitrile-butadiene rubber nitrile water-recovery apparatus.

Background technology

Powdered acrylonitrile-butadiene rubber is to be made through emulsion polymerization process in polymeric kettle by divinyl and acrylonitrile monemer, and transformation efficiency can be controlled in more than 95%, and unreacted monomer remains in the rubber cement with free form.Pollute in order to improve the quality of products, reduce energy material consumption, the reduction of producing, we carry out degassed processing to reacting complete rubber cement in degassed still, residual acrylonitrile monemer and part water namely are referred to as nitrile water through the degassed nitrile tank that is condensed to, and nitrile water must be squeezed into and reclaim use in the polymeric kettle.Nitrile water: be acrylonitrile solution, nitrile water recovery process is: go out to degassed still through the rubber cement that polyreaction obtains in the polymeric kettle,-0.08Mpa, in the 68-72 degree situation degassed 4 hours, vinyl cyanide residual in the rubber cement is extracted with the gas phase of mixing of water, in condenser, become nitrile water after the condensation, be stored in the nitrile tank.

The removal process of nitrile water was not carried out with pump before my company transformed, a pump namely is installed between nitrile tank exit and polymeric kettle, the nitrile water yield of nitrile tank reach a certain amount of after, we must squeeze into nitrile water in the polymeric kettle, reduce the vinyl cyanide unit consumption with this, reduce and pollute.This technique is to measure in accordance with regulations nitrile water is squeezed into polymeric kettle in polymerization feeds intake process, opens nitrile tank outlet valve and pump outlet valve when feeding intake, and ejector priming can be finished.

This technique finds to exist following problems in my company's production and application process:

1, because of nitrile water in the nitrile tank, autohemagglutination produces autopolymer owing to can occur in the existence of some residual monomers, and then block pumps, cause the nitrile shipwreck to squeeze in the polymeric kettle, affect the polymerization charging time, reduce production efficiency, simultaneously because nitrile tank self finite capacity, just can cause the nitrile shipwreck to process in case pump stops up, the nitrile hypervolia makes troubles to subsequent disposal;

2, the frequent obstruction of pump also can have damage to pump, has increased production cost and maintenance cost;

3, pump stops up and then can feed through to the obstruction of pipeline, then need employ manpower and materials and clear up, and complex operation reduces production efficiency;

The utility model content

The utility model purpose is exactly in order to remedy the defective of prior art, a kind of degassed nitrile water-recovery apparatus of Powdered acrylonitrile-butadiene rubber that is applicable to be provided.

The utility model is achieved through the following technical solutions:

A kind of Powdered acrylonitrile-butadiene rubber nitrile water-recovery apparatus, include polymeric kettle, condenser, water sealed tank, nitrile water storage tank and vacuum pump, described vacuum pump is with degassed still, be evacuated in condensation storage tank and the nitrile water, vinyl cyanide residual in the described rubber cement is extracted with the gas phase of mixing of water, enter successively in condenser and the nitrile water storage tank, also include strainer, described strainer is the cylindrical shell of sealing two ends, cylindrical shell left end top has import, cylindrical shell right-hand member below has outlet, inner barrel is provided with filter basket, the nitrile water in the described nitrile water storage tank is passed in the strainer, in the nitrile water suction polymeric kettle after will filtering again.

Principle of work of the present utility model is: rubber cement is recycled to the nitrile water storage tank through degassed by condenser, until nitrile water storage capacity reach a certain amount of after, but i.e. just suction polymeric kettle when polymerization feeds intake, at first utilize vacuum pump that polymeric kettle is vacuumized, so that be negative pressure in the polymeric kettle, open nitrile water storage tank outlet valve and filter outlet valve, utilize negative pressure that nitrile water is come amount suction polymeric kettle in accordance with regulations, close nitrile water storage tank outlet valve and filter outlet valve, can finish the recovery of nitrile water and use.

The utility model has the advantages that: the utility model adopts negative pressure directly nitrile water to be evacuated to polymeric kettle, has removed the rubber cement transferpump, has reduced cost, nitrile water high in and low out in the strainer, cleaning is during strainer after exhausting, and container liquid is few, and it is few namely to propose the thing liquid taken out of behind the filter basket, both can accomplish environmental protection, can save energy and reduce the cost again, the design of strainer high in and low out can so that filter basket volume accomplish very greatly, and cylinder inboard wall need not design the engage a gear circle, filter basket not recipient can arbitrarily rotate to restriction.

Description of drawings

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

Fig. 2 is filter structure schematic representation of the present utility model.

Embodiment

As shown in Figure 1, 2, a kind of Powdered acrylonitrile-butadiene rubber nitrile water-recovery apparatus, include polymeric kettle 1, condenser 2, water sealed tank 3, nitrile water storage tank 4 and vacuum pump 5, described vacuum pump 5 will be evacuated in degassed still 1 and the condenser 2, vinyl cyanide residual in the rubber cement is extracted with the gas phase of mixing of water, enter successively in condenser and the nitrile water storage tank 4, micro-uncooled acrylonitrile monemer and water vapour are discharged into the atmosphere from chimney through water sealed tank 3, have guaranteed the security seal of equipment.Described strainer 6 is the cylindrical shell of sealing two ends, cylindrical shell left end top has import 7, and cylindrical shell right-hand member below has outlet 8, and inner barrel is provided with filter basket 9, nitrile water in the described nitrile water storage tank 4 is passed in the strainer 6, in the nitrile water suction polymeric kettle 1 after will filtering again.

Claims

1. Powdered acrylonitrile-butadiene rubber nitrile water-recovery apparatus, include polymeric kettle, condenser, water sealed tank, nitrile water storage tank and vacuum pump, described vacuum pump will be evacuated in degassed still and the condenser, residual vinyl cyanide is extracted with the gas phase of mixing of water in the described rubber cement, in condenser, become nitrile water after the condensation, be stored in the nitrile tank, micro-uncooled acrylonitrile monemer and water vapour are discharged into the atmosphere from chimney through water sealed tank; It is characterized in that: also include strainer, described strainer is the cylindrical shell of sealing two ends, cylindrical shell left end top has import, cylindrical shell right-hand member below has outlet, inner barrel is provided with filter basket, nitrile water in the described nitrile water storage tank is passed in the strainer, in the nitrile water suction polymeric kettle after will filtering again.