阅读说明：本技术 一种垃圾和污泥协同焚烧综合处理的方法和系统 (A kind of method and system of rubbish and sludge collaboration burning integrated treatment ) 是由 洪光 李期斌 祁司亮 张蒙雨 马津麟 王子铭 王鸿飞 邢晓娜 郝江涛 刘彦辉 于 2019-08-22 设计创作，主要内容包括：本发明公开了一种垃圾和污泥协同焚烧综合处理的方法和系统,涉及环保处理技术领域。首先利用垃圾焚烧系统中的回流烟气干化污泥,得到处于粘滞区污泥,再利用垃圾焚烧系统产生的锅炉灰对其进行干化,至得到满足与垃圾协同处理需要的造粒要求的污泥。该方法不仅有效的利用了垃圾焚烧系统的回流烟气和副产物锅炉灰,节省了干化污泥的尾气处理过程,而且通过分阶段干化,使用锅炉灰混合污泥的方式有效的解决了粘滞区污泥流动性差,干化速率低的问题,大大的降低了污泥干化需要消耗的能源。在实际应用中,只需要在现有的垃圾焚烧处理系统中,加入污泥干化处理系统以及两者之间的连接管线和输送设备即可,不需要额外配置污泥干化厂房,易于工业实现。(The invention discloses the method and systems that a kind of rubbish and sludge collaboration burn integrated treatment, are related to environmental protection treatment technical field.It first with the backflow flue gas dewatered sludge in refuse burning system, obtains in stagnant zone sludge, the Boiler Ash for recycling refuse burning system to generate carries out desiccation to it, until obtaining meeting the sludge that the granulation for cooperateing with processing to need with rubbish requires.The backflow flue gas and by-product Boiler Ash of refuse burning system is not only effectively utilized in this method, save the vent gas treatment process of dewatered sludge, and pass through desiccation stage by stage, use the mode effective solution stagnant zone sludge poor fluidity of Boiler Ash mixing sludge, the energy that sludge drying needs to consume greatly reduces in the low problem of desiccation rate.In practical applications, it is only necessary in existing waste incineration processing system, sludge drying treatment system and connecting pipeline and conveying equipment between the two be added, do not need additionally to configure sludge drying workshop, be easy to industrial realization.)

1. a kind of method that integrated treatment is burned in rubbish and sludge collaboration, which comprises the steps of:

S1, the sludge that the backflow flue gas using refuse burning system is 75~80% to moisture content carry out drying and other treatment, are contained The semi-oriented sludge and dewatered sludge tail gas that water rate is 60~65%, dewatered sludge tail gas are back in refuse burning system；

The semi-oriented sludge that the Boiler Ash that refuse burning system generates is 60~65% with moisture content is mixed S2, Obtain the semi-oriented sludge that moisture content is 40~41%；

S3, the semi-oriented sludge that moisture content is 40~41% are delivered to refuse burning system after being granulated, mix and burn with rubbish It burns.

2. the method that integrated treatment is burned in rubbish according to claim 1 and sludge collaboration, which is characterized in that in S1, institute Drying and other treatment is stated to carry out in roller drier.

3. the method that integrated treatment is burned in rubbish according to claim 2 and sludge collaboration, which is characterized in that before S1 also Including step S0,75~80% sludge is stacked field in sludge and is stacked 3~5 days, and is pre-processed with overturning mixer to sludge.

4. the method that integrated treatment is burned in rubbish according to claim 1 and sludge collaboration, which is characterized in that in S1, institute The consumer waste incineration treating capacity for stating refuse burning system is 500t/d, and the amount of the backflow flue gas is 15000m³/ h, temperature are 140~160 DEG C, the treating capacity for the sludge that the moisture content is 75~80% is 22~25t/d.

5. the method that integrated treatment is burned in rubbish according to claim 4 and sludge collaboration, which is characterized in that in S1, institute The treating capacity for the sludge that the amount for stating backflow flue gas is 75~80% with the moisture content determines as follows:

Determine the consumer waste incineration treating capacity of the refuse burning system；

The amount and temperature of backflow flue gas are determined according to the consumer waste incineration treating capacity of the refuse burning system；

It is determined according to the amount of the moisture content 60~65% of the semi-oriented sludge obtained after drying and other treatment and the backflow flue gas The treating capacity for the sludge that moisture content to be processed is 75~80%.

6. the method that integrated treatment is burned in rubbish according to claim 1 and sludge collaboration, which is characterized in that in S2, institute The consumer waste incineration treating capacity for stating refuse burning system is 500t/d, and the amount of the Boiler Ash is 7.5t/d, the moisture content Treating capacity for 60~65% semi-oriented sludge is 12.75~15.75t/d.

7. the method that integrated treatment is burned in rubbish according to claim 6 and sludge collaboration, which is characterized in that described aqueous The treating capacity of semi-oriented sludge that rate is 60~65% determines as follows with the amount of the Boiler Ash:

Determine the consumer waste incineration treating capacity of the refuse burning system；

The amount of Boiler Ash is determined according to the consumer waste incineration treating capacity of the refuse burning system；

Determine that moisture content is according to the amount of the moisture content 40~41% of the semi-oriented sludge obtained after mixing and Boiler Ash The treating capacity of 60~65% semi-oriented sludge.

8. total system is burned in a kind of rubbish and sludge collaboration, which is characterized in that dry including refuse burning system and sludge Change system, the sludge drying system successively include: drying and other treatment equipment, mixing equipment and granulation according to the flow direction of sludge The backflow flue gas outlet of equipment, the refuse burning system is connect with the backflow flue gas import of the drying and other treatment equipment, described The offgas outlet of drying and other treatment equipment is connect with the backflow flue gas import of the refuse burning system, the refuse burning system Boiler Ash outlet is connect with the Boiler Ash import that equipment is mixed, the outlet of the Granulation Equipments and the waste incineration The garbage inlet of system connects.

9. total system is burned in rubbish according to claim 8 and sludge collaboration, which is characterized in that the rubbish is burnt Burning system includes sequentially connected trash repository and feeding system, incinerator, boiler and backflow flue gas purification system, the reflux cigarette The backflow flue gas outlet of gas purification system is connect with the backflow flue gas import of the drying and other treatment equipment, the drying and other treatment equipment Offgas outlet connect with the backflow flue gas import of the incinerator, the outlet of the Boiler Ash of the boiler is set with described be mixed Standby Boiler Ash import connection, the outlet of the Granulation Equipments is connect with the garbage inlet of the trash repository and feeding system.

10. total system is burned in rubbish according to claim 9 and sludge collaboration, which is characterized in that further include the One conveying equipment, the second conveying equipment and third conveying equipment, the first conveying equipment setting are mixed in the boiler with described It closes between mixing plant for conveying Boiler Ash；The second conveying equipment setting is stacked field in sludge and is set with the drying and other treatment The sludge for being 75~80% for conveying moisture content between standby；Third conveying equipment setting the Granulation Equipments with it is described For conveying mud granule between trash repository and feeding system.

Technical field

The present invention relates to the sides that environmental protection treatment technical field more particularly to the collaboration of a kind of rubbish and sludge burn integrated treatment Method and system.

Background technique

Have in the municipal sludge generated in Municipal facility operation and maintenance process containing various pathogen, heavy metal etc. Evil substance, if bringing secondary pollution directly to water body and atmosphere, no after sludge is directly entered environment without appropriately handling disposition But the effective processing capacity of sewage disposal system is reduced, and serious prestige is constituted to the activity of ecological environment and the mankind The side of body.

Currently, in China's specific resistance to filtration main method, sludge land landfill accounts for about that 65%, sludge composting is agricultural to be accounted for about 15%, natural desiccation accounts for about 6%, burning and accounts for about 3%, other disposition about 11%.Wherein Sludge landfill is there are many problems, due to Moisture percentage in sewage sludge is higher, and leachate generation is big, leachate collection system easily blocks, and exacerbates the dirt of percolate from garbage filling field It contaminates and makes to fill operating difficulties etc.；Furthermore Sludge landfill process consumes a large amount of land resource, since many cities are difficult to find New landfill yard, Sludge landfill makes this, and limited landfill yard storage capacity is more nervous.The rubbish collaboration developed in recent years is burnt Burn the method for processing sludge, main flow is to transport sludge to burning disposal factory, after individual drying and other treatment again with life rubbish Rubbish mixes burning.The energy that desiccation uses is usually the steam for burning line and generating.Sludge need the heat using steam by evaporation and Diffusion process alternately takes away Sludge Surface and internal moisture, be finally dried into moisture content be about 40% it is half-dried Change sludge.In the drying process, sludge can undergo the stagnant zone that moisture content is about 60~40%, the sludge stream in stagnant zone Dynamic property is poor, is unfavorable for evaporation and the progress of diffusion process, and therefore, in stagnant zone, the drying efficiency of sludge is very low, need to consume compared with More energy, and the operation troubles rate that will cause desiccation mechanical equipment rises.

Summary of the invention

The purpose of the present invention is to provide the method and systems that a kind of rubbish and sludge collaboration burn integrated treatment, to solve Foregoing problems certainly existing in the prior art.

To achieve the goals above, The technical solution adopted by the invention is as follows:

One aspect of the present invention provides the method for a kind of rubbish and sludge collaboration burning integrated treatment, includes the following steps:

S1, the sludge that the backflow flue gas generated using refuse burning system is 75~80% to moisture content carry out at desiccation Reason, obtains semi-oriented sludge and dewatered sludge tail gas that moisture content is 60~65%, and dewatered sludge tail gas is back to rubbish and burns In burning system；

The Boiler Ash that refuse burning system generates mix stirring by S2 with the semi-oriented sludge that moisture content is 60~65% It mixes, obtains the semi-oriented sludge that moisture content is 40~41%；

S3, the semi-oriented sludge that moisture content is 40~41% are delivered to refuse burning system after being granulated, mixed with rubbish It closes and burns.

Preferably, in S1, the drying and other treatment carries out in roller drier.

It preferably, further include step S0 before S1,75~80% sludge is stacked field in sludge and stacked 3~5 days, and with turning over Mixed machine pre-processes sludge.

Preferably, in S1, the consumer waste incineration treating capacity of the refuse burning system is 500t/d, the backflow flue gas Amount be 15000m³/ h, temperature are 140~160 DEG C, and the treating capacity for the sludge that the moisture content is 75~80% is 22~25t/ d。

Preferably, in S1, the treating capacity of the sludge that the amount of the backflow flue gas and the moisture content are 75~80% according to Following method determines:

Determine the consumer waste incineration treating capacity of the refuse burning system；

The amount and temperature of backflow flue gas are determined according to the consumer waste incineration treating capacity of the refuse burning system；

According to the amount of the moisture content 60~65% of the semi-oriented sludge obtained after drying and other treatment and the backflow flue gas Determine that moisture content to be processed is the treating capacity of 75~80% sludge.

Preferably, in S2, the consumer waste incineration treating capacity of the refuse burning system is 500t/d, the Boiler Ash Amount is 7.5t/d, and the treating capacity for the semi-oriented sludge that the moisture content is 60~65% is 12.75~15.75t/d.

Preferably, the treating capacity for the semi-oriented sludge that the moisture content is 60~65% and the amount of the Boiler Ash are according to such as Lower method determines:

Determine the consumer waste incineration treating capacity of the refuse burning system；

The amount of Boiler Ash is determined according to the consumer waste incineration treating capacity of the refuse burning system；

It is determined according to the amount of the moisture content 40~41% of the semi-oriented sludge obtained after mixing and Boiler Ash aqueous The treating capacity for the semi-oriented sludge that rate is 60~65%.

Another aspect of the present invention provides a kind of rubbish and total system, including waste incineration system are burned in sludge collaboration System and sludge drying system, the sludge drying system successively include: drying and other treatment equipment, mixing according to the flow direction of sludge Equipment and Granulation Equipments, the backflow flue gas import of the backflow flue gas outlet and the drying and other treatment equipment of the refuse burning system Connection, the offgas outlet of the drying and other treatment equipment are connect with the backflow flue gas import of the refuse burning system, the rubbish The Boiler Ash outlet of incineration system is connect with the Boiler Ash import that equipment is mixed, the outlet of the Granulation Equipments and institute State the garbage inlet connection of refuse burning system.

Preferably, the refuse burning system includes sequentially connected trash repository and feeding system, incinerator, boiler and returns Flow flue gas purification system, the backflow flue gas of the backflow flue gas outlet and the drying and other treatment equipment of the backflow flue gas purification system Import connection, the offgas outlet of the drying and other treatment equipment are connect with the backflow flue gas import of the incinerator, the boiler Boiler Ash outlet is connect with the Boiler Ash import that equipment is mixed, the outlet of the Granulation Equipments and the trash repository and The garbage inlet of feeding system connects.

Backflow flue gas and Boiler Ash are provided with bypass, when stopping working for sludge drying system, waste incineration line energy It operates normally.

It preferably, further include the first conveying equipment, the second conveying equipment and third conveying equipment, first conveying equipment It is arranged between the boiler and the mixing equipment for conveying Boiler Ash；Second conveying equipment is arranged in sludge Stack the sludge for being 75~80% for conveying moisture content between field and the drying and other treatment equipment；The third conveying equipment is set It sets between the Granulation Equipments and the trash repository and feeding system for conveying mud granule.

The beneficial effects of the present invention are: rubbish provided by the invention and sludge collaboration burn the method for integrated treatment and are System, first with the backflow flue gas of refuse burning system, the moisture content of sludge is reduced to from the 75~80% of municipal sludge 60~65%, it is then mixed using the Boiler Ash that refuse burning system generates with the sludge of moisture content 60~65%, makes dirt The moisture content of mud is reduced to 40~41% from 60~65%, meets the requirement for the granulation sludge for cooperateing with processing to need with rubbish. The backflow flue gas and by-product Boiler Ash of refuse burning system is not only effectively utilized, saves to the tail gas of dewatered sludge Treatment process, and the mode effective solution of Boiler Ash mixing sludge is used in sludge stagnant zone by desiccation stage by stage Stagnant zone sludge poor fluidity, the sludge problem low in stagnant zone heat drying rate greatly reduce sludge drying needs and disappear The energy of consumption, so, the integrated treatment that the present invention realizes rubbish by low energy consumption and sludge collaboration is burned.In practical application In, it is only necessary in existing waste incineration processing system, sludge drying treatment system and connecting tube between the two is added Line and conveying equipment do not need additionally to configure sludge drying workshop, can be used for newly-built incineration treatment of garbage factory, can also For the transformation to conventional garbage treatment plant, it is easy to accomplish.

Detailed description of the invention

Fig. 1 is the method flow schematic diagram that integrated treatment is burned in rubbish and sludge collaboration provided by the invention.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to Limit the present invention.