Complete equipment for industrial waste residue purification process

Abstract

The utility model discloses a complete device for an industrial waste residue purification process, belongs to the technical field of environmental protection, and particularly relates to a purification process and device for industrial solid-phase waste residues, in particular to a complete device for purifying industrial solid-phase waste residues by utilizing the structural characteristic that each filter disc of a tilting-pan vacuum filter is independently turned over to blow back and discharge materials. According to the process steps, filter partitions and matched equipment are optimized to form a single filter purification process complete device, and the purification process flows of filtration separation, multiple washing, re-pulping reaction, re-filtration separation, clean water washing and drying and washing water neutralization and circulation without discharge are completed, so that the purposes of reducing investment, reducing production and operation cost and improving production efficiency are achieved. And renewable resource utilization and environmental protection project popularization are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the environmental protection technical field, especially industrial solid phase waste residue's purification process and device are related. BACKGROUND

[0002] Industrial solid phase waste residue accumulates huge quantity, and with the scale production discharge amount increasing day by day, with the improvement of environmental protection requirement, the treatment requirement of the original industrial solid phase waste residue that is piled up is gradually improved to the requirement of industrial solid phase waste residue regeneration resource utilization rate;In order to prevent pollution of water source, the original industrial solid phase waste residue needs a seepage prevention treatment yard and a device for filtering and recycling process water when discharging, the device mainly considers economy, waste residue reaches the moisture content requirement of piling up, and part of the components in the liquid phase recycling waste residue are returned to the production system or sewage treatment, so that the waste residue treatment process is mainly solid-liquid separation plus one or two times of washing, and the solid-liquid separation equipment in the device is also relatively easy to select type, and since the treatment capacity is large, large-scale vacuum filter machines such as belt type, turnover disc and rotary table vacuum filter machines are usually configured;And the regeneration resource utilization of solid phase waste residue has higher process indexes for waste residue components, in addition to removing soluble harmful components in waste residue by washing, it is also necessary to remove insoluble harmful components in waste residue by reaction, and according to the existing technology process, a re-slurry reaction device needs to be arranged between multiple solid-liquid separation devices, the process of the series connection device is long, the investment and production operation cost are high, and the cost of returning the washing liquid discharged to the original factory sewage treatment is also high, and economy is the main influencing factor for the popularization of regeneration resource utilization environmental protection projects;Therefore, an optimized device and process are needed to realize the washing and purification of waste residue, reduce investment and production operation cost, and promote the popularization of regeneration resource utilization environmental protection projects. SUMMARY

[0003] In order to solve the problems existing in the prior art, the utility model provides a kind of industrial waste residue purification process complete device, utilizes the structure characteristics of each filter disc independent overturning blow-off of turnover disc vacuum filter machine, and the partition of filter machine and supporting equipment are optimized according to process steps, to form single filter machine purification process complete device, complete filtration separation, multiple washing, re-slurry reaction, re-filtration separation, clean water washing and drying and washing water neutralization circulation non-discharge purification process flow, to reduce investment, reduce production operation cost, and promote the popularization of regeneration resource utilization environmental protection projects.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a complete set of industrial waste residue purification process equipment, the purification process consists of pulping, primary filtration, multi-stage countercurrent washing, re-pulping reaction, secondary filtration after re-pulping, clean water washing, drying and washing water neutralization circulation; the complete set of equipment consists of a purification filter, an integrated gas-liquid separator, a dry residue hopper, a filter cloth washing residue hopper, a belt conveyor, a slurry pump, a return pulp pump, a weak washing liquid pump, a strong washing liquid pump, a circulation pump, a re-pulping reaction tank, a filter cloth washing tank, a washing liquid tank, a neutralization sedimentation tank and a stirrer; the purification process The soluble components of the waste residue are removed by washing, the insoluble components of the waste residue are removed by repulping reaction, the consumption of washing water is reduced by countercurrent washing, and the washing water is regenerated and recycled by the neutralization sedimentation tank; the complete set of equipment preferably adopts a vacuum pipe inserted into the liquid water seal, and uses the atmospheric leg drainage method of the liquid column height and vacuum balance, without vacuum drainage equipment, and preferably an integrated gas-liquid separator, that is, the distribution valve on the purification filter integrates the gas-liquid separation function, and the vacuum power directly reaches the filter surface. Compared with the original configuration of N gas-liquid separator groups or ring pipe gas-liquid separators with different concentrations under the filter, the integrated gas-liquid separator is more convenient to use. The integrated gas-liquid separator reduces vacuum power loss and also reduces the installation height of the filter, that is, the height of the plant. The layout of the complete plant plant is as follows: the purification filter is installed on the third floor, the dry slag hopper and filter cloth washing slag hopper are installed under the third floor, the belt conveyor is installed on the second floor, and the remaining pumps and tanks are installed on the first floor. Except for the washing liquid tank, the other tanks are equipped with agitators. The large vacuum filter in the device is preferably a tilting disc vacuum filter, specifically a top-suction double-tilt disc single-washing vacuum filter. The filter selection considerations are: belt type The vacuum filter cannot realize multiple unloading on a single machine, and the rotary vacuum filter needs to add a discharge screw and a high-pressure washing filter cloth regeneration component to realize multiple unloading, which will increase the equipment cost and energy consumption. In addition, the high-pressure washing water consumption of 2 rows of nozzles with a pressure of 1.0-1.2MPa for each filter cloth regeneration is large, which is not conducive to the process water balance. The flip vacuum filter realizes multiple unloading by only changing the shape of the guide rail component that controls the self-weight flipping of the eccentric filter disc without adding new components. The filter cloth is regenerated by the compressed air blown back by the discharge and the pressure of 0.3-0.5 MPa flushing water is used to achieve this, without increasing the water consumption for filter cloth flushing; the process zoning of the double-turn phosphogypsum wet slag filtrate machine for solid-liquid separation of original waste slag is as follows: 360° half-division in one week, with a filtration area → washing and drying area → filter cloth flushing area set every 180°, using two parallel feedings, two unloadings, and two filter cloth flushings; the purification filter is divided into sections according to the industrial waste slag purification process: a filtration area is set once in a week → n washing areas → backwashing and unloading areas → secondary filtration area after repulping → clean water washing and drying area → backwashing and unloading areas → filter cloth flushing areas, using two series feedings, two unloadings, one filter cloth flushing and countercurrent washing processes, which reduces the auxiliary area required for one filter cloth flushing and increases the effective filtration area compared to the double-turn phosphogypsum wet slag filtrate machine.

[0005] The process path of waste residue in the complete set of equipment is the main line path, which is as follows: slurry preparation (slurry preparation tank is pumped into the purification filter) → primary filtration → n times washing → drying → backwashing unloading (dry residue hopper) → re-slurry reaction (re-slurry reaction tank is pumped back to the purification filter) → secondary filtration, clean water washing, drying → backwashing unloading (dry residue hopper) → next process (conveyed by belt conveyor); the washing process water is circulated in the complete set of equipment for countercurrent washing (i.e., reverse the main line path), and the process path enters the purification filter in two ways, one for washing the filter cloth (entering the filter cloth washing slag hopper and falling into the filter cloth washing tank), and the other for washing with clean water (entering the filter cloth washing tank). After being pumped out from the filter cloth washing tank, part of it enters the re-slurry reaction tank and is sent back to the secondary filtration area after re-slurrying of the purification filter for filtration, and then returns to the filter cloth washing tank for circulation. The other part is countercurrently washed and pumped to the nth washing area (entering the washing liquid tank and pumping back) → n-1 washing (entering the corresponding concentration washing liquid tank and pumping back)... → 1st washing (filtrate entering the pulping tank and pumping back) → primary filtration (filtrate entering the neutralization sedimentation tank and pumping back) → back to the cycle; the positions and functions of the remaining materials in the industrial waste purification process entering the complete set of equipment are as follows: compressed air enters the various backwashing unloading areas of the purification filter to assist in unloading and filter cloth regeneration, and the mixing materials are quantitatively added to the re-pulping reaction tank as needed to remove the insoluble components that need to be removed from the industrial waste, the neutralizing liquid is added to the neutralization sedimentation tank to neutralize the soluble components to produce particle sedimentation, and the overflow liquid is used as washing process water for recycling, and the vacuum air is extracted from the air outlet of the integrated gas-liquid separator to provide separation power for the purification filter.

[0006] The utility model discloses a complete set of equipment for industrial waste residue purification process. In the purification process, soluble components of the waste residue are removed by countercurrent washing, and then insoluble components of the waste residue are removed by re-slurry reaction, thereby reducing the consumption of washing process water and seasoning materials. The washing process water is regenerated and recycled in a neutralization sedimentation tank, thereby reducing sewage discharge. A single filtering host completes the purification process, and an integrated gas-liquid separator is used to reduce the height of the plant, thereby reducing investment and production and operation costs, and is conducive to the promotion of environmental protection projects using renewable resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0008] Figure 1 This is a process flow diagram of a complete set of industrial waste residue purification equipment;

[0009] In the figure, PS. Waste slag, PS0. Finished slag, PS1. Seasoning, CA. Compressed air, PW. Washing process water, PW1. Neutralizing liquid, PG. Vacuum air, I. Primary filtration area, II. Primary washing area, III. Secondary washing area, IV. Secondary filtration area after repulping, V. Clean water washing and drying area, VI. Backflush unloading area, VII. Filter cloth washing area, F. Purification filter, E. Integrated gas-liquid separator, D1~2. Dry slag hopper, D3. Filter cloth washing slag hopper, X. Belt conveyor, P0. Slurry pump, P1. Return slurry pump, P2. Weak washing liquid pump, P3. Circulation pump, P4. Strong washing liquid pump, V0. Slurry mixing tank, V1. Repulping reaction tank, V2. Filter cloth washing tank, V3. Neutralization sedimentation tank, V4. Washing liquid tank, A0~3. Agitator. DETAILED DESCRIPTION

[0010] An industrial waste residue purification process complete set of the embodiment comprises a purification filter F, an integrated gas-liquid separator E, dry residue hoppers D1-2, a filter cloth washing residue hopper D3, a belt conveyor X, a slurry pump P0, a return slurry pump P1, a weak wash liquid pump P2, a circulation pump P3, a strong wash liquid pump P4, a slurry mixing tank V0, a ​​reslurry reaction tank V1, a filter cloth washing tank V2, a neutralization sedimentation tank V3, a wash liquid tank V4, and agitators A0-3; the purification filter F is installed on the third floor +10.00m high floor, the dry residue hoppers D1-2 and the filter cloth washing residue hopper D3 are installed below the third floor floor, the belt conveyor is installed on the second floor +5.00m floor, and the remaining equipment is installed on the first floor ±0 .00m above the ground, except for the washing liquid tank V4, the other tanks are equipped with agitators A0~3. The purification filter F in the device adopts an upper suction double-tumble single-wash vacuum filter. The integrated gas-liquid separator E is integrated on the purification filter F. The purification filter F is equipped with a primary filtration area I, a primary washing area II, a secondary washing area III, a backwashing unloading area VI, a secondary filtration area IV after re-pulping, a clean water washing and drying area V, a backwashing unloading area VI, and a filter cloth washing area VII in sequence according to the purification process; the waste residue PS process path is as follows: the waste residue PS and the filtrate discharged from the primary washing area II are slurried in the slurry mixing tank V0, and then pumped to the purification filter F by the slurry pump P0, passing through the primary filtration area I and the primary washing area II. After filtering and washing in the secondary washing zone III, it is tilted into the dry slag hopper D1 with the assistance of compressed air CA in the backwash unloading zone VI and then falls into the re-pulping reaction tank V1. After re-pulping reaction in the re-pulping reaction tank V1 with the blending material PS1 and part of the washing liquid pumped out by the weak washing liquid pump P2, it is pumped back to the purification filter F by the return slurry pump P1. After filtering, washing and drying in the secondary filtration zone IV after re-pulping and the clean water washing and drying zone V, it is tilted into the dry slag hopper D2 with the assistance of compressed air CA in the backwash unloading zone VI and then falls into the belt conveyor X to discharge the finished slag PS0; the washing process water PW flow path enters the purification filter F in two ways, one way enters the filter cloth washing zone VII and then falls into the filter cloth washing zone. The cloth washing residue hopper D3 then enters the filter cloth washing tank V2, and the other route enters the filter cloth washing tank V2 after washing from the clean water washing and drying area V, and is pumped out from the filter cloth washing tank V2 by the weak washing liquid pump P2. Part of it enters the repulping reaction tank V1 and is sent back to the secondary filtration area IV after repulping of the purification filter F for filtration, and then returns to the filter cloth washing tank V2 for circulation. The other part is pumped to the secondary washing area III for washing and enters the washing liquid tank V4, and is pumped by the strong washing liquid pump P4 to the primary washing area II for washing and enters the slurry mixing tank V0 for slurry mixing, and then is pumped by the slurry pump P0 to the primary filtration area I for filtration and enters the neutralization and sedimentation tank V3, and finally is pumped back for circulation by the circulation pump P3; the vacuum air PG is extracted from the air outlet of the integrated gas-liquid separator E.

[0011] The above description is only a specific embodiment of the present invention, but the implementation of the present invention is not limited thereto. Any changes or modifications made within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A complete set of industrial waste residue purification process equipment consists of a purification filter (F), an integrated gas-liquid separator (E), a dry residue hopper (D1-2), a filter cloth washing residue hopper (D3), a belt conveyor (X), a slurry pump (P0), a return slurry pump (P1), a weak wash liquid pump (P2), a circulation pump (P3), a strong wash liquid pump (P4), a slurry mixing tank (V0), a reslurry reaction tank (V1), a filter cloth washing tank (V2), a neutralization sedimentation tank (V3), a wash liquid tank (V4), and a stirrer (A0-3); characterized in that: The purification filter (F) uses an upper suction double-tumble single-wash vacuum filter, and the integrated gas-liquid separator (E) is integrated on the purification filter (F). The purification filter (F) is provided with a primary filtration area (I) → n-th washing area → backwashing unloading area (VI) → secondary filtration area after repulping (IV) → clean water washing and drying area (V) → backwashing unloading area (VI) → filter cloth washing area (VII) in sequence for a purification process of 360°. It adopts two series feeding, two unloading, one filter cloth washing and countercurrent washing processes. The purification filter (F) adopts a vacuum pipe inserted into a submerged water seal and uses an atmospheric leg discharge method in which the height of the liquid column is balanced with the vacuum.

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