CN208087360U - A kind of black water treatment system - Google Patents

Abstract

The utility model discloses a kind of black water treatment systems, it includes subsider, ash water tank and filtrate receiver, subsider overflow port is connected to ash water tank entrance, the outlet of ash water tank is connected to by grey water pump with the buck ring main of subsider, the mud discharging mouth of subsider is pumped by subsider bottom and is connected to vacuum filter entrance, it is installed with muddy water control valve in the outlet of subsider bottom pump, the filtrate (liquid of vacuum filter is connected to filtrate receiver entrance.Advantage：When driving the driving mechanism of rake arms operating to break down; processing is repaired to it without taking a significant amount of time; branch pipe is rinsed by the buck ring main and buck that are connected to ash water tank to introduce in flushing water to subsider; can fast quick-recovery to the purge of subsider lower layer muddy water containing floccule; avoid long-time black water treatment system shut down and caused by huge economic losses; the buck in ash water tank has fully been recycled simultaneously, reduces cost of sewage disposal.

Description

A kind of black water treatment system

Technical field：

The utility model is related to coal gasified black water processing technology field, more particularly to a kind of black water treatment system.

Background technology：

The flow for the usage on black water that the air-flow bed coal-gasification used at present generates is from the Heisui River that gasification furnace flows out through excessively high Pressure flash distillation, middle pressure flash distillation and vacuum flashing concentration after, into subsider, and by subsider addition flocculant to Heisui River into Row precipitation separation, makes Heisui River quickly be clarified；Subsider include sedimentation groove body, support platform, driving mechanism, hoisting mechanism, Rake arms, rake arms main shaft and support base, driving mechanism and hoisting mechanism are fixed on by support base in support platform respectively, driving machine Structure is connected by retarder and rake arms main shaft upper end, and hoisting mechanism includes motor and leading screw, and motor passes through leading screw and rake arms Main shaft upper end connects, and the lower end of rake arms main shaft extends to the slot bottom of subsider, rake arms has been symmetrical arranged in rake arms main shaft lower end；Rake Arm main shaft drives rake arms to rotate under the driving of driving mechanism, and the flocculate of subsider slot bottom will be deposited in rake arms rotation process Mud discharging mouth is scraped, then filtration system is pumped by subsider bottom, isolates filter cake, subsider supernatant liquor is known as buck, Enter ash water system by the overflow port on subsider, after a part of buck is flashed the steam preheating that tower comes out, into washing Tower and gasification furnace reuse, and the filtrate and another part buck that filtration system is isolated enter after sewage-treatment plant handled Discharge.

And driving mechanism driving rake arms carries out in scale removal process the precipitation of subsider slot bottom at present, when driving mechanism occurs When disorderly closedown, needs that again it will be repaired processing behind the Heisui River in subsider all discharge, thus lead to usage on black water System is out of service for a long time, and huge economic loss is caused to enterprise, and generated during daily usage on black water Buck is not recycled adequately, and the cost of sewage disposal is increased；In addition, the long-term pumping muddy water of subsider bottom pump, Pipe content between subsider mud discharging mouth and bottom pump intake easily deposits floccule, results in blockage, and needs after shutting down by operating Personnel carry out dismounting cleaning to the pipeline, lead to Heisui River system-down.

Utility model content：

The purpose of this utility model is to provide a kind of bucks to be fully recycled, and can guarantee without shutting down The black water treatment system of continuous processing is carried out to Heisui River.

The utility model is implemented by following technical solution：A kind of black water treatment system comprising subsider, ash water tank, true Empty filter and filtrate receiver, the subsider overflow port are connected to the ash water tank entrance, and the outlet of the ash water tank passes through ash Water pump is connected to the buck ring main of the subsider, and grey water control valve is installed in the outlet of the grey water pump, described The mud discharging mouth of subsider is pumped by subsider bottom and is connected to the vacuum filter entrance, in the outlet of subsider bottom pump It is installed with muddy water control valve, the filtrate (liquid of the vacuum filter is connected to the filtrate receiver entrance.

Further, the subsider includes that sedimentation groove body, the buck ring main and buck rinse branch pipe, described Sedimentation groove body top outer is horizontally fixed with the buck ring main, and the slot bottom of the sedimentation groove body is back taper, with institute It states and along the circumferential direction offers several the first inclined holes, the axis of first inclined hole on the adjacent subsider body sidewall of slot bottom Line is mutually parallel with the slot bottom busbar, and each first inclined hole rinses branch pipe and the buck ring main by the buck Connection rinses on branch pipe in each buck and is installed with buck branch pipe control valve.

Further, it is horizontally fixed with filtrate annular in the subsider external side adjacent with the buck ring main Supervisor, offers the second inclined hole on the subsider body sidewall between adjacent first inclined hole of any two, and described the The axis of two inclined holes is mutually parallel with the slot bottom busbar, and each second inclined hole rinses branch pipe and the filtrate ring by filtrate Shape supervisor's connection, rinses on branch pipe in each filtrate and is installed with filtrate branch pipe control valve, and the filtrate receiver outlet passes through filter Liquid pump is connected to the filtrate ring main, and filtrate control valve is installed in the outlet of the filtrate pump.

Further, be installed with triple valve on the entrance of subsider bottom pump, the first entrance of the triple valve with The mud discharging mouth connection of the sedimentation groove body, the second entrance of the triple valve are connected to by back-flushing valve with high pressure nitrogen tank； Flowmeter is installed on pipeline between the muddy water control valve and the vacuum filter, the flowmeter is controlled with DCS System connects.

The advantages of the utility model：When driving the driving mechanism of rake arms operating to break down, without taking a significant amount of time Processing is repaired to it, rinsing branch pipe by the buck ring main and buck that are connected to ash water tank introduces flushing water to sedimentation In slot, you can fast quick-recovery avoids long-time black water treatment system to the purge of subsider lower layer muddy water containing floccule Shut down and caused by huge economic losses, while fully having recycled the buck in ash water tank, reduced cost of sewage disposal.

Description of the drawings：

FIG. 1 is a schematic structural view of the utility model.

The label of each component is as follows in attached drawing：Subsider 1, ash water tank 2, grey water pump 3, buck ring main 4, grey water management Valve 5, subsider bottom pump 6, vacuum filter 7, muddy water control valve 8, filtrate receiver 9, slot bottom 10, the first inclined hole 11, buck rinse branch Pipe 12, buck branch pipe control valve 13, filtrate ring main 14, the second inclined hole 15, filtrate rinse branch pipe 16, filtrate branch pipe control valve 17, filtrate pump 18, filtrate control valve 19, triple valve 20, mud discharging mouth 21, back-flushing valve 22, high pressure nitrogen tank 23, flowmeter 24, DCS Control system 25, driving mechanism 26, hoisting mechanism 27, rake arms 28, rake arms main shaft 29, sedimentation groove body 30, support platform 31, support Seat 32, motor 33, leading screw 34, retarder 35.

Specific implementation mode：

As shown in Figure 1, a kind of black water treatment system comprising subsider 1, ash water tank 2, vacuum filter 7 and filtrate receiver 9, it is horizontally fixed with buck ring main 4 in 1 top outer of subsider, 1 overflow port of subsider is connected to 2 entrance of ash water tank, ash The outlet of sink 2 is connected to by grey water pump 3 with the buck ring main 4 of subsider 1, and ash is installed in the outlet of grey water pump 3 The mud discharging mouth 21 of water control valve 5, subsider 1 is connected to by subsider bottom pump 6 with 7 entrance of vacuum filter, and 6 are pumped at subsider bottom Outlet on be installed with muddy water control valve 8, the filtrate (liquid of vacuum filter 7 is connected to 9 entrance of filtrate receiver；Subsider 1 includes Settle groove body 30, support platform 31, driving mechanism 26, hoisting mechanism 27, rake arms 28, rake arms main shaft 29, support base 32, grey water ring Shape supervisor 4 and buck rinse branch pipe 12, and the slot bottom 10 of sedimentation groove body 30 is back taper, in the sedimentation groove body 30 adjacent with slot bottom 10 Several first inclined holes 11 are along the circumferential direction offered on side wall, axis and 10 busbar of slot bottom of the first inclined hole 11 are mutually parallel, Each first inclined hole 11 rinses branch pipe 12 by buck and is connected to buck ring main 4, rinses on branch pipe 12 in each buck and installs There is buck branch pipe control valve 13, after driving the failure of driving mechanism 26 of rake arms 28 to shut down, passes through 4 He of buck ring main Buck rinses branch pipe 12 and the part buck in ash water tank 2 is transported in sedimentation groove body 30, and then 30 lower layer of sedimentation groove body is contained The muddy water of floccule is purged at the mud discharging mouth 21 of slot bottom 10, then precipitation is pumped into vacuum filter 7 by subsider bottom pump 6 It is filtered, filtrate is discharged into filtrate receiver 9；It is flat that driving mechanism 26 and hoisting mechanism 27 are fixed on support by support base 32 respectively On platform 31, driving mechanism 26 is connected by retarder 35 and 29 upper end of rake arms main shaft, and hoisting mechanism 27 includes 33 He of motor Leading screw 34, motor 33 are connect by leading screw 34 with 29 upper end of rake arms main shaft, and the lower end of rake arms main shaft 29 extends to sedimentation groove body 30 Slot bottom 10, be symmetrical arranged rake arms 28 in 29 lower end of rake arms main shaft；Rake arms main shaft 29 drives under the driving of driving mechanism 26 Rake arms 28 rotates, and the flocculate for being deposited to slot bottom 10 is scraped mud discharging mouth 21 in 28 rotation process of rake arms.

It is horizontally fixed with filtrate ring main 14 in sedimentation groove body 30 outside adjacent with buck ring main 4, arbitrary The second inclined hole 15, the axis and slot of the second inclined hole 15 are offered on 30 side wall of sedimentation groove body between two adjacent first inclined holes 11 10 busbar of bottom is mutually parallel, and each second inclined hole 15 rinses branch pipe 16 by filtrate and is connected to filtrate ring main 14, in each filtrate It rinses on branch pipe 16 and is installed with filtrate branch pipe control valve 17, the outlet of filtrate receiver 9 passes through filtrate pump 18 and filtrate ring main 14 Connection, is installed with filtrate control valve 19 in the outlet of filtrate pump 18, and branch pipe 16 is rinsed by filtrate ring main 14 and filtrate The filtrate stored in filtrate receiver 9 is transported to the slot bottom 10 of sedimentation groove body 30, it is flocculent conducive to 30 lower layer of groove body will be settled Muddy water is more fully purged at the mud discharging mouth 21 of slot bottom 10.

Triple valve 20, first entrance and the sedimentation groove body 30 of triple valve 20 are installed on the entrance of subsider bottom pump 6 Mud discharging mouth 21 is connected to, and the second entrance of triple valve 20 is connected to by back-flushing valve 22 with high pressure nitrogen tank 23；Muddy water control valve 8 with Flowmeter 24 is installed on pipeline between vacuum filter 7, flowmeter 24 connect with DCS control systems 25, controlled when by DCS When system 25 processed monitors that the numerical value of flowmeter 24 is less than required value, illustrate that subsider bottom pumps between 6 entrances and mud discharging mouth 21 Back-flushing valve 22 is opened in line clogging, and high pressure nitrogen is discharged from high pressure nitrogen tank 23, and 6 entrances and mud discharging mouth 21 are pumped to subsider bottom Between pipeline carry out blowback sweep.

Operation instruction：During usage on black water, muddy water control valve 8 is opened, starts subsider bottom pump 6 and driving rake arms 28 Driving mechanism 26, rake arms main shaft 29 drives rake arms 28 to rotate under the driving of driving mechanism 26, will in 28 rotation process of rake arms The flocculate for being deposited to slot bottom 10 scrapes mud discharging mouth 21, then is pumped into vacuum filter 7 by subsider bottom pump 6 and is filtered, The filter residue filtered out recycles, and filtrate is discharged into filtrate receiver 9, and the buck on 30 upper layer of sedimentation groove body enters buck by overflow port Slot 2.

When the failure of driving mechanism 26 for driving rake arms 28 to operate on subsider 1 is shut down, starts lifting device 27, lead to It crosses rake arms main shaft 29 and promotes rake arms 28 and disengage it from the slot bottom 10 of subsider 1, be then turned on grey water control valve 5 and arbitrary opposite A pair of of buck branch pipe control valve 13, start grey water pump 3, while opening filtrate control valve 19 and arbitrary opposite a pair of of filtrate branch Pipe control valve 17, starts filtrate pump 18, so by ash water tank 2 and filtrate receiver 9 part buck and filtrate introduce subsider 1 Cone tank bottom 10 purges flocculent muddy water, and purging is separately turned on any other opposite a pair of ash after two hours Water branch pipe control valve 13 and filtrate branch pipe control valve 17, meanwhile, close above-mentioned buck branch pipe control valve 13 and the control of filtrate branch pipe Valve 17, successively cycle progress, you can realization is continuously purged to mud discharging mouth 21 to the muddy water containing floccule of 1 lower sediment of subsider, And then vacuum filter 7 is constantly pumped by subsider bottom pump 6 and is filtered, filtered filtrate flows into filtrate receiver 9.

When monitoring that the numerical value of flowmeter 24 is less than required value by DCS control systems 25, illustrate that subsider bottom pump 6 enters Line clogging between mouth and mud discharging mouth 21, switching three-way valve 20 make the pipeline between back-flushing valve 22 and mud discharging mouth 21 be connected to, together When close subsider bottom pump 6, then back-flushing valve 22 is opened, high pressure nitrogen is discharged from high pressure nitrogen tank 23, to triple valve 20 with Pipeline between mud discharging mouth 21 carries out blowback and sweeps, and closes back-flushing valve 22 after purging a period of time, then switching three-way valve 20, makes to sink Drop slot bottom pumps 6 entrances and is connected to the pipeline between mud discharging mouth 21, starts the muddy water that subsider bottom pump 6 extracts mud discharging mouth 21, when logical When crossing DCS control systems 25 and monitoring that the numerical value of flowmeter 24 is restored to required value, illustrate that subsider bottom pumps 6 entrances and mud discharging mouth Pipeline between 21 has been dredged.

The foregoing is merely the preferred embodiments of the new shape of this practicality, all at this not to limit the new shape of this practicality Within the spirit and principle of practical new shape, any modification, equivalent replacement, improvement and so on should be included in the new shape of this practicality Protection domain within.

Claims (4)

1. a kind of black water treatment system, which is characterized in that it includes subsider, ash water tank, vacuum filter and filtrate receiver, described Subsider overflow port is connected to the ash water tank entrance, and the outlet of the ash water tank passes through the buck of grey water pump and the subsider Ring main is connected to, and is installed with grey water control valve in the outlet of the grey water pump, the mud discharging mouth of the subsider passes through sedimentation Slot bottom pump is connected to the vacuum filter entrance, and muddy water control valve is installed in the outlet of subsider bottom pump, described The filtrate (liquid of vacuum filter is connected to the filtrate receiver entrance.

2. black water treatment system according to claim 1, which is characterized in that the subsider includes sedimentation groove body, described Buck ring main and buck rinse branch pipe, and the buck ring main is horizontally fixed in the sedimentation groove body top outer, The slot bottom of the sedimentation groove body is back taper, is along the circumferential direction opened up on the subsider body sidewall adjacent with the slot bottom There are several the first inclined holes, the axis of first inclined hole to be mutually parallel with the slot bottom busbar, each first inclined hole passes through The buck rinses branch pipe and is connected to the buck ring main, is rinsed on branch pipe in each buck and is installed with buck branch pipe Control valve.

3. black water treatment system according to claim 2, which is characterized in that in the institute adjacent with the buck ring main It states the external side of subsider and is horizontally fixed with filtrate ring main, the sedimentation between adjacent first inclined hole of any two The second inclined hole is offered on groove body side wall, the axis of second inclined hole is mutually parallel with the slot bottom busbar, and each described second Inclined hole rinses branch pipe by filtrate and is connected to the filtrate ring main, is rinsed on branch pipe in each filtrate and is installed with filtrate Branch pipe control valve, the filtrate receiver outlet is connected to by filtrate pump with the filtrate ring main, in the outlet of the filtrate pump On be installed with filtrate control valve.

4. black water treatment system according to any one of claims 1 to 3, which is characterized in that in entering for subsider bottom pump Triple valve is installed on mouthful, the first entrance of the triple valve is connected to the mud discharging mouth of the sedimentation groove body, the threeway The second entrance of valve is connected to by back-flushing valve with high pressure nitrogen tank；Between the muddy water control valve and the vacuum filter Flowmeter is installed on pipeline, the flowmeter is connect with DCS control systems.