阅读说明：本技术 一种新型膜分离组合技术治理印刷废气的方法 (A kind of method that novel UF membrane combination technique administers printing exhaust gas ) 是由 姚素杰 李占锋 于 2019-09-09 设计创作，主要内容包括：本发明公开了一种新型膜分离组合技术治理印刷废气的方法,包含以下步骤：将印刷机所产生的有机废气经过集风装置后,通过膜浓缩系统进行膜分离处理,处理后的渗透气,一部分进入冷凝系统,冷却后的溶剂被冷凝返回印刷机墨槽进行回用,剩余的渗透气进入销毁系统处理后达标排放。本发明是以膜为核心技术,依据有机蒸汽与空气透过气体膜的能力不同,而达到分离的效果；本发明应用于印刷行业,回收有机溶剂的效率可达90％以上。(The invention discloses a kind of methods that novel UF membrane combination technique administers printing exhaust gas, it comprises the steps of: organic exhaust gas caused by printing machine after wind-drive device, membrane separation is carried out by film concentration systems, treated permeates gas, a part enters condenser system, solvent after cooling, which is condensed, returns to the progress reuse of printing machine ink tank, and remaining infiltration gas enters qualified discharge after destroying system processing.The present invention is using film as core technology, and foundation organic steam is different from the ability of air permeable gas film, and achievees the effect that separation；The present invention is applied to printing industry, recycles the efficiency of organic solvent up to 90% or more.)

1. a kind of method that novel UF membrane combination technique administers printing exhaust gas, it is characterised in that: comprise the steps of:

By organic exhaust gas caused by printing machine after wind-drive device, membrane separation, processing are carried out by film concentration systems Infiltration gas afterwards, a part enter condenser system, and solvent after cooling, which is condensed, returns to the progress reuse of printing machine ink tank, remaining Infiltration gas enters qualified discharge after destroying system processing.

2. the method that a kind of novel UF membrane combination technique according to claim 1 administers printing exhaust gas, it is characterised in that: The film concentration systems include membrane module, and membrane module is including but not limited to nanofiltration membrane, ultrafiltration membrane, microfiltration membranes, reverse osmosis membrane, infiltration Vaporize film, Steam soak and gas separation membrane etc..

3. the method that a kind of novel UF membrane combination technique according to claim 1 administers printing exhaust gas, it is characterised in that: The temperature of circulated air in the wind-drive device is controlled at 40~60 DEG C.

4. the method that a kind of novel UF membrane combination technique according to claim 1 administers printing exhaust gas, it is characterised in that: The concentration that infiltration gas enters RTO, RCO or CO of destroying system is 2000mg/m3~8000mg/m3, and apparatus for destroying is equipped with back-fire relief The safety devices such as device, rupture disk.

5. the method that a kind of novel UF membrane combination technique according to claim 1 administers printing exhaust gas, it is characterised in that: It is recycled after the heated device preheating of the exhaust gas handled through film concentration systems as circulated air.

6. a kind of method that novel UF membrane combination technique administers printing exhaust gas described in Claims 1 to 5, which is characterized in that For printing industry.

Technical field

The present invention relates to a kind of Treatment process fields of exhaust gas that processing printing industry generates, and in particular to a kind of new membrane Separate the method that combination technique administers printing exhaust gas.

Background technique

With the sustainable development of economic construction, living standards of the people are continuously improved, and the discharge of exhaust gas is continuously increased, and give environment Construction brings corresponding requirements at the higher level；Environmental protection is protecting ecology balance, protects socio-economic development, protects people's body One fundamental state policy of health, the improvement to VOCs are to prevent and treat the effective measures of environmental pollution.

Currently, in process of production, packages printing industry uses a large amount of ink, solvent and diluent.In the life of printing It can volatilize largely in production and drying process containing the organic exhaust gas of VOCs；The main component of VOCs is ethyl alcohol, ethyl acetate, fourth Ester, propyl ester and benzene type organic matter.

The processing mode of traditional printing industry can be divided into two kinds: one is existing collection conduit system is transformed, by exhaust gas Enter RTO (heat-accumulating type high-temperature oxidation unit), RCO (heat accumulating type catalytic oxidizing equipment) or CO (catalysis after being concentrated from source Oxidation unit) etc. equipment handled；Existing collection conduit system is transformed, collection mode need to be redesigned, passes through valve, LEL Monitor, temperature transmitter and pressure transmitter etc. carry out the return air of control polychrome unit；This technique is by Wind Volume, low concentration The multiple reuse concentration of exhaust gas, generates the exhaust gas of small air quantity, high concentration, to reduce the cost of aftertreatment device, creates for enterprise Benefit is made, but during this process implementing, the equipment and pipeline of original system are difficult to utilize again, the mixed wind matching of polychrome unit Unevenness, partial solvent exhaust leak deteriorate the operating environment of worker.

Another kind be on the basis of original collection conduit, after being concentrated using runner or activated-carbon device enter RTO, RCO or CO device is handled；The original collection wind collection system of this technology utilization, but handle that air quantity is big, concentration is low, investment compared with It is high.

A kind of method that novel UF membrane combination technique administers printing exhaust gas, which is characterized in that be used for printing industry.

Summary of the invention

The invention patent is designed to provide a kind of UF membrane combination technique improvement printing exhaust gas technique, in order to change The exhaust gas of printing industry can only provide more valuable processing technique to widen Treatment process using the status for destroying technique.

The method that a kind of novel UF membrane combination technique according to the present invention administers printing exhaust gas comprising the steps of:

By organic exhaust gas caused by printing machine after wind-drive device, membrane separation is carried out by film concentration systems, Treated permeates gas, and a part enters condenser system, and solvent after cooling, which is condensed, returns to the progress reuse of printing machine ink tank, remains Remaining infiltration gas enters qualified discharge after destroying system processing.

The present invention is using film as core technology, and foundation organic steam is different from the ability of air permeable gas film, and reaches Isolated effect；The present invention is applied to printing industry, recycles the efficiency of organic solvent up to 90% or more.

Organic exhaust gas is to contain VOCs, organic molten containing benzene,toluene,xylene, ethyl acetate, butyl ester, propyl ester, butanol etc. Agent.

In some embodiments, the film concentration systems include membrane module, and membrane module is including but not limited to nanofiltration membrane, super Filter membrane, microfiltration membranes, reverse osmosis membrane, infiltrating and vaporizing membrane, Steam soak and gas separation membrane etc..

In some embodiments, the temperature of the circulated air in the wind-drive device is controlled at 40~60 DEG C.Condenser system Cold source can be used but be not limited to recirculated water, cooling water, deep cooling water and other cooling mediums etc..

In some embodiments, infiltration gas enter destroying system RTO, RCO or CO concentration be 2000mg/m3~ 8000mg/m3, apparatus for destroying are equipped with the safety devices such as fire arrester, rupture disk.

In some embodiments, make after the heated device preheating of the exhaust gas handled through film concentration systems as circulated air circulation With.

Detailed description of the invention

Fig. 1 is the method that a kind of novel UF membrane combination technique of one embodiment of the present invention administers printing exhaust gas Structural schematic diagram.

Specific embodiment

With reference to the accompanying drawings of the specification, the present invention is described in more detail.

This patent is to invent a kind of novel UF membrane combination technique improvement printing exhaust gas technique, it is characterised in that: this technique Include film processing system, condenser system, reclaiming system, destruction (RTO, RCO or CO) system.The present invention is using film as core skill Art, it is different from the ability of air permeable gas film according to organic steam, and achieve the effect that separation.The present invention successfully applies In printing industry, the efficiency of organic solvent is recycled up to 90% or more.

The present invention is suitable for printing industry.The organic exhaust gas containing VOCs from printing machine, contains benzene, toluene, diformazan The organic solvents such as benzene, ethyl acetate, butyl ester, propyl ester, butanol.

This method is on the basis of original devices such as original duct set road, baking oven, heater, circulating fan and printing machine On, increase film concentration systems.

Keep original system it is constant on the basis of, formed tiny structure system, prevent escaping and hiding for organic solvent, largely Organic solvent is after film concentration systems are by UF membrane, and after infiltration gas enters condenser system, a large amount of solvent, which is condensed, returns to ink tank Reuse.

It up to standard is discharged again after entering destroying system processing containing the infiltration gas of a small amount of VOCs part.

Circulated air is used as after the heated device preheating of the infiltration residual air that residue after the separation of film concentration systems contains a small amount of VOCs It is recycled.

The design considerations of film concentration systems is that the kinetic diameter of each substance is different, according to organic steam and air permeable The ability of gas film is different, and achievees the effect that separation；Such as the separation of waste gas containing benzene: the main component of air is nitrogen and oxygen Gas, the kinetic diameter of nitrogen are 0.364nm；The kinetic diameter of oxygen is 0.346nm；And the kinetic diameter of benzene is 0.58nm；The kinetic diameter of toluene is 0.59nm；The kinetic diameter of dimethylbenzene is 0.58nm~0.7nm；It selects to be suitable for hole The film of diameter, as infiltration gas, pure air is recycled benzene homologues as residual air is seeped.According to different solvents used in printing machine Specific customization, membrane module is including but not limited to nanofiltration membrane, ultrafiltration membrane, microfiltration membranes, reverse osmosis membrane, infiltrating and vaporizing membrane, Steam soak And gas separation membrane etc..

The temperature of circulated air is controlled at 40~60 DEG C；The cold source of condenser system can be used but be not limited to recirculated water, cooling water, Deep cooling water and other cooling mediums etc..

The concentration that infiltration gas enters RTO, RCO or CO of destroying system is controlled in 2000mg/m3~6000mg/m3.It destroys Device is equipped with the safety devices such as fire arrester, rupture disk.

Specific embodiments of the present invention are expounded just for optimised process combination of the invention, and technical term is equal It is shared for environmental protection industry (epi) or similar noun.Novel process of the invention can select not according to the difference of gas source ingredient Membranous system together, condenser system.Technology is destroyed according to multiple producing level selection of the owner to energy consumption is reasonable.It is above-mentioned to enumerate number Value, which should not be constituted, limits the invention protection scope.

The above is only preferred embodiment of the invention, it is noted that those skilled in the art, not Under the premise of being detached from the invention design, some similar deformation and improvement can be made, these are also considered as invention protection Within.