CN207862150U - Dregs of a decoction mud drying process is monitored on-line and protection system and dregs of a decoction sludge drying system - Google Patents

Abstract

A kind of dregs of a decoction mud drying process on-line monitoring of the utility model and protection system; including VOCs on-Line Monitor Devices, nitrogen gas generator and emergency fan; the input terminal of VOCs on-Line Monitor Devices is connected by pipeline with the tail gas air hose trepanning for connecting sludge drying machine; output end is connect with Central Control Room, and the tail gas situation monitored is reacted to Central Control Room；Nitrogen gas generator is connected to tail gas air hose and sludge drying machine respectively by pipeline；Emergency fan be located at the end for the tail gas air hose for connect sludge drying machine, and with nitrogen gas generator interlock, run when nitrogen gas generator is opened, nitrogen gas generator closure when be stopped.Further, a kind of dregs of a decoction sludge drying system with the system is also disclosed.The combustible organic content in drying process tail gas can be monitored on-line by the system, and handled in time when combustible organic content is more than safe concentration, can effectively avoid because combustible excessive concentration leads to the generation of tail gas explosion problem.

Description

Dregs of a decoction mud drying process is monitored on-line and protection system and dregs of a decoction sludge drying system

Technical field

The invention belongs to sludge drying technique fields, and in particular to a kind of dregs of a decoction mud drying process on-line monitoring and protection System and the dregs of a decoction sludge drying system for using the on-line monitoring and the system of protection.

Background technology

With the continuous expansion of the rapid industrial development in our country, especially Scale of Township Enterprises, industrial sludge constantly generates And have a large capacity and a wide range, the sludge quantity that wherein pharmaceutical industry generates also is increasing year by year, dregs of a decoction moisture percentage in sewage sludge usually 60%~ 85%, it usually needs could carry out such as burning or curing disposition after being carried out dehydrating.By using the desiccation machine pair of heat source High water content sludge carries out a kind of form that desiccation is deeply dehydrating sludge at this stage.It will be dirty by being passed through thermal energy into desiccation machine Water vapor in mud, is then taken away by wind turbine, and the moisture content of sludge can be reduced.Partly it is easy to the object of volatilization in drying process Matter will be brought into drying tail gas together with steam, and drying tail gas need to pass through as burned, biological deodorizing even depth is handled It can just be emitted into environment afterwards.

The sludge harmful components complexity generated during pharmaceutical technology sludge and pharmacy wastewater treatment is various, is easy to volatilize Organic matter (i.e. volatile organic matter VOCs) content it is high so that there are combustible contents to be more than for the tail gas generated in drying process The possibility of explosion limit has the danger of burning or explosion if tail gas using incineration disposal or if encountering open fire.

Utility model content

To solve the above problems, the utility model discloses a kind of dregs of a decoction mud drying process on-line monitorings and protection system System, can monitor the combustible organic content in drying process tail gas on-line, and be more than safety in combustible organic content It is handled, can effectively avoid because combustible excessive concentration leads to the generation of tail gas explosion problem in time when concentration.Specific skill Art scheme is as follows：

For a kind of dregs of a decoction mud drying process on-line monitoring with protection system, the tail gas for dregs of a decoction sludge drying system is online Monitoring and protection, mainly include VOCs on-Line Monitor Devices, nitrogen gas generator and emergency fan, VOCs on-Line Monitor Devices Input terminal is connected by pipeline with the tail gas air hose trepanning for connecting sludge drying machine, and output end connect with Central Control Room, will monitor Tail gas situation react to Central Control Room；Nitrogen gas generator is connected to tail gas air hose and sludge drying machine respectively by pipeline；Accident Wind turbine is located at the end of the tail gas air hose of connection sludge drying machine, and is interlocked with nitrogen gas generator, when nitrogen gas generator is opened Operation, nitrogen gas generator are stopped when being closed.

As a preferred embodiment, VOCs on-Line Monitor Devices have auto-alarm function, dense in the organic matter detected Degree reaches preset alarm threshold value or releases alarm threshold value, generates alarm signal or releases alarm signal.

As a preferred embodiment, nitrogen gas generator is electrically connected to Central Control Room, passes through its unlatching of central control system remote control Or it is closed.

As a preferred embodiment, connection nitrogen gas generator and the pipeline in sludge drying machine, tail gas air duct are mounted on electricity Dynamic control valve.

As a preferred embodiment, motor regulated valve is electric butterfly valve.

As a preferred embodiment, nitrogen gas generator includes nitrogen storage device and nitrogen gas generating device.

As a preferred embodiment, VOCs on-Line Monitor Devices can be to hydrocarbon (THC), methane, non-methane total hydrocarbons (NMHC), a variety of volatile organic matter concentration such as benzene,toluene,xylene are monitored on-line.

Invention additionally discloses a kind of dregs of a decoction sludge drying systems, are existed using dregs of a decoction mud drying process as characterized above Line monitors and protection system.

To sum up, combustible content in tail gas can be carried out using VOCs disclosed in the utility model on-line monitorings real When monitor and record, when combustible content be more than alarm limits when system send out alarm signal, operating personnel can timely processing.

The tail gas in dregs of a decoction mud drying process is monitored by the systematic difference, and in due course according to monitoring result Start nitrogen gas generator, solves tail gas combustable gas concentration more than the burning even hidden peril of explosion that explosion limit is brought, improve The safeties of dregs of a decoction mud drying process.

After receiving the report for police service, operating personnel can open nitrogen gas generator in time, nitrogen gas generator by nitrogen endlessly It is filled with inside desiccation machine and in tail gas air hose, up to organic matter restores to safe concentration in VOCs monitor alarm releases, tail gas In range, ensure the safe operation of follow-up exhaust treatment system.

Description of the drawings

Fig. 1 is the structural schematic diagram that system was monitored and protected to embodiment Chinese medicine slag mud drying process on-line.

In figure：VOCs on-Line Monitor Devices 1, middle control display 2, nitrogen gas generator 3, tail gas air hose 4, electric butterfly valve 51, Electric butterfly valve 52, electric butterfly valve 53, sludge drying machine 6, emergency fan 7, exhaust fan 8, nitrogen inlet duct 91, nitrogen inlet duct 92。

Specific implementation mode

Below in conjunction with the accompanying drawings, and in conjunction with the embodiments the present invention is described further.

As shown in Figure 1, disclosing a kind of dregs of a decoction mud drying process on-line monitoring and protection system in embodiment, include mainly VOCs on-Line Monitor Devices 1, nitrogen gas generator 3, emergency fan 7.

VOCs on-Line Monitor Devices 1 are mounted in desiccation workshop, input terminal and the tail gas air hose 4 for connecting sludge drying machine 6 Trepanning connects, and is mainly made of VOC detectors, PID sensor, data collecting instrument part, and included scene and middle control alarm Device；Output end is connect with central control system (Central Control Room).VOCs on-Line Monitor Devices 1 can monitor combustible organic in tail gas automatically Monitoring result is simultaneously reached Central Control Room by content in real time, while alarm can also be generated when combustible concentration reaches alarm setting value Signal releases alarm after combustible concentration is reduced to and releases alarm setting value.Such as GD-2000T types, MGC- specifically can be used The on-Line Monitor Device of 5000 types.When the ionization potential of volatile organic matter is less than chemical compound gas or the steaming of ultraviolet lamp energy When vapour passes through ionization cavity, which will be smashed into the negative ions that can be detected, detector by the ultraviolet source of PID It measures the gas charge after ionization and is translated into current signal, then electric current is amplified and is converted into concentration value.VOCs Different alarm limits can be arranged in monitoring device 1 according to different organic matters, when a certain kind detection content of material is more than alarm limit When value, which sounds, while transmitting signals to Central Control Room, and is carried out by middle control display 2 Display.

Nitrogen gas generator 3 includes nitrogen storage device and nitrogen gas generating device, is mounted in desiccation workshop, passes through nitrogen Air inlet pipe 91 is connect with 4 trepanning of tail gas air hose, is connect with sludge drying machine 6 by nitrogen inlet duct 92, and in nitrogen inlet duct 91 and nitrogen inlet duct 92 on electric butterfly valve 52 and electric butterfly valve 53 are installed respectively.Wherein, electric butterfly valve, which mainly rises, blocks work With pipeline is separated when not needing inflated with nitrogen, can also select shut-off valve according to demand.

Emergency fan 7 is located at 4 end of exhaust pipe, and general industrial centrifugal wind turbine can be used, and exhaust air rate is more than tail gas Wind turbine 8.Exhaust fan 7 is interlocked with nitrogen gas generator 3, starts work automatically when nitrogen gas generator 3 is opened, normally Closed state.Emergency fan 7 is used to bring the nitrogen that nitrogen gas generator 3 generates in desiccation machine 6 and tail gas air hose 4 into and be mixed with tail gas It closes.

Under heat source heating condition, dregs of a decoction sludge is gradually dried in sludge drying machine 6, is generated in mud drying process Tail gas (volatile organic matter i.e. in sludge in moisture and sludge) brought into together in tail gas air hose 4, and pass through tail gas wind Machine 8 is discharged.In the process, the combustible content in drying tail gas is monitored by VOCs on-Line Monitor Devices 1, the dress Setting can be to a variety of volatile organic matter such as total hydrocarbon, methane, non-methane total hydrocarbons, benzene,toluene,xylene in drying tail gas Concentration is monitored, and monitoring data are reached middle control display 2, and staff is facilitated to check.When VOCs on-Line Monitor Devices 1 When detecting that the VOCs concentration in exhaust pipe 4 is more than preset alarm threshold value setting value, alarm signal is generated, nitrogen occurs Device 3 is opened, and emergency fan 7 works, and nitrogen respectively enters desiccation machine 6 and tail through nitrogen inlet duct 91 and nitrogen inlet duct 92 After being mixed with tail gas in gas air hose 4, it is then exhausted from tail gas air hose 4 after the concentration of VOCs in exhaust gas is reduced, subsequently into rear end Reason system.It should be noted that after nitrogen enters exhaust pipe 4, gas in pipelines becomes more, but wind pressure will not change too greatly (and Exhaust pipe stress levels in 10 atmospheric levels, can't all impact exhaust pipe), exhaust fan 7 is in nitrogen Generator 3 is opened when working, and can the system be quickly discharged in the gas of generation.

If scene has patrol officer, patrol officer that can be handled immediately after receive the alarm signal；If without inspection After personnel then control the alarm signal that display 2 is shown by controllers in receiving, notice relevant operation personnel reach scene It is handled.Operating personnel open nitrogen gas generator 3 and electric butterfly valve 51,52 and 53, the high pressure nitrogen in nitrogen gas generator 3 Under the action of high pressure and exhaust fan 7 and exhaust fan 8, it is admitted in tail gas air hose 4 and sludge drying machine 6, it is mixed with tail gas It closes, reduces rapidly combustible concentration to safe range, to prevent drying tail gas from exploding in post-processing.Pass through VOCs On-Line Monitor Device 1 is observed, after the combustible concentration in exhaust pipe 4, which is reduced to, releases alarm threshold value, VOCs monitoring devices 1 Alarm release；Site operation personnel closes electric butterfly valve 5, and closes nitrogen after 3 holding vessel of nitrogen gas generator is filled with Device 3；Nitrogen and tail gas pass through exhaust fan 7 together and exhaust fan 8 is sent into back-end processing.In embodiment, nitrogen gas generator 3 It is opened by field inspector, certainly, can also be arranged to when VOCs on-Line Monitor Devices 1 are alarmed through central control system control Its automatic startup is made, and emergency fan 7 is driven to work.It is worth noting that, when generation detects abnormal, alarm as scene and The middle same alarm of control has patrol officer in full plant area's inspection, now because of the typically no operating personnel in scene under normal production scenarios When field sends out alarm, possible patrol officer is not in the operating area, it is therefore desirable to signal is transferred to middle control simultaneously, by middle control Personnel notify patrol officer to operate by intercom, to ensure the safety of mud drying process.

Further, it also illustrates in embodiment and is monitored on-line and the system of protection with the dregs of a decoction mud drying process Dregs of a decoction sludge drying system, above description have been directed to, and details are not described herein again.

The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not It is confined to this, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality Novel technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the scope of protection of the utility model it It is interior.

Claims (8)

1. a kind of dregs of a decoction mud drying process on-line monitoring is with protection system, the tail gas for dregs of a decoction sludge drying system is supervised online It surveys and protects, it is characterised in that：Including VOCs on-Line Monitor Devices, nitrogen gas generator and emergency fan,

The input terminal of VOCs on-Line Monitor Devices is connected by pipeline with the tail gas air hose trepanning for connecting sludge drying machine, output end It is connect with Central Control Room, the tail gas situation monitored is reacted to Central Control Room；

Nitrogen gas generator is connected to tail gas air hose and sludge drying machine respectively by pipeline；

Emergency fan is located at the end of the tail gas air hose of connection sludge drying machine, and is interlocked with nitrogen gas generator, occurs in nitrogen Device is run when opening, and nitrogen gas generator is stopped when being closed.

2. on-line monitoring according to claim 1 and protection system, it is characterised in that：VOCs on-Line Monitor Devices have certainly Dynamic warning function reaches preset alarm threshold value in the organic concentration detected or releases alarm threshold value, generates alarm signal Or release alarm signal.

3. on-line monitoring according to claim 1 and protection system, it is characterised in that：Nitrogen gas generator is electrically connected to middle control Room passes through its closure or openness of central control system remote control.

4. on-line monitoring according to claim 1 and protection system, it is characterised in that：It is dry with sludge to connect nitrogen gas generator Change machine, tail gas air duct pipeline be mounted on motor regulated valve.

5. on-line monitoring according to claim 1 and protection system, it is characterised in that：Motor regulated valve is electronic butterfly Valve.

6. on-line monitoring according to claim 1 and protection system, it is characterised in that：Nitrogen gas generator includes nitrogen storage Device and nitrogen gas generating device.

7. on-line monitoring according to claim 1 and protection system, it is characterised in that：VOCs on-Line Monitor Devices for pair The a variety of volatile organic matter concentration of hydrocarbon (THC), methane, non-methane total hydrocarbons (NMHC), benzene,toluene,xylene carry out On-line monitoring.

8. a kind of dregs of a decoction sludge drying system, using dregs of a decoction mud drying process as claimed in any of claims 1 to 7 in one of claims On-line monitoring and protection system.