Oil and iron removal treatment device for process condensed water

Abstract

The utility model relates to the technical field of process condensed water treatment, and discloses a process condensed water deoiling and deironing treatment device which comprises a condensed water tank used for collecting condensed water; the magnetic gain composite iron removal barrier tank is used for magnetizing, adsorbing and condensing iron particles and colloids in the condensed water and filtering out suspended impurities in the condensed water; the condensed water booster pump pumps condensed water from the water tank, pressurizes the condensed water and then feeds the pressurized condensed water into the magnetic gain composite iron removal barrier tank; and the enrichment interception oil removal tank is used for intercepting, separating and removing hydrophobic impurities in incoming water. When the device is used for treating condensed water, the condensed water sequentially passes through the magnetic gain composite deironing barrier tank and the enrichment interception deoiling tank, so that oil and other impurities in a water body can be effectively removed, and the device is high in overall deoiling and deironing precision, stable in effluent quality, high in impact load resistance, simple and convenient to operate and low in operation cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to process condensate water treatment technical field especially relates to a process condensate water oil removal iron removal treatment device. BACKGROUND

[0002] Process condensate water refers to the steam pipeline of process production device after heat exchange, temperature and pressure all exist different degrees of drop, and part of steam condenses into condensate water. In order to prevent the water hammer phenomenon of steam pipeline, this part of condensate water is rapidly discharged through the drain valve and is collected into the condensate water tank. Because the rust and impurities on the wall of the steam in the system pipeline, heat exchanger are brought into the steam condensate water, and there is the infiltration of process medium, so that the iron and oil content in the process condensate water exceeds the desalted water index. Therefore, the steam condensate water cannot be directly used as boiler feed water, and needs to be removed after oil and iron, and then recycled. Process condensate water recycling utilizes the heat energy of condensate water, reduces water resource waste.

[0003] At present, the commonly used process condensate water oil removal iron removal scheme mainly includes:

[0004] (1) ultra-micro filter + fiber adsorption filter

[0005] The ultra-micro filter adopts high-temperature-resistant inorganic single-crystal metal filter element, and the bridge is covered in the micropore by using chemical agent. The filtering mechanism mainly includes combination, inertial impact, diffusion and interception. The fiber adsorption filter adopts activated carbon fiber as adsorbent, and the adsorption capacity is large. The size of nanometer micropore and the surface chemical property can be adjusted, and the material is a material that can be easily regenerated for many times. The ultra-micro filter and the fiber adsorption filter are regenerated by using low-pressure steam.

[0006] But the technical scheme has high operation cost, is applied more in petrochemical engineering industry, but the scale is generally small.

[0007] (2) iron removal filter + coalescence filter

[0008] The iron removal filter removes colloidal iron and suspended iron in the condensate water by using the backwashable filter core. The coalescence filter uses oil-wet fiber as coarse material to capture small oil droplets in water, so as to remove oil in the condensate water.

[0009] But the coalescence filter is easy to be blocked, and the flux decreases. The oil substances in water are easy to exceed the standard for a long time. At the same time, the iron removal filter needs to be replaced regularly, and the operation is not convenient. INVENTION CONTENTS

[0010] The utility model aims at solving the problems in the prior art, and provides a process condensate water oil removal iron removal treatment device.

[0011] In order to achieve the above object, the utility model adopts the following technical scheme:

[0012] A process condensate oil and iron removal treatment device, comprising:

[0013] A condensate tank is used for collecting condensate water.

[0014] A magnetic gain composite iron removal barrier tank is used for magnetizing, adsorbing, and agglomerating iron-based particulate matters and colloids in the condensate water, and filtering suspended impurities in the condensate water.

[0015] A condensate booster pump is used for extracting condensate water from the tank, pressurizing the condensate water, and sending the pressurized condensate water into the magnetic gain composite iron removal barrier tank.

[0016] An enrichment interception oil removal tank is used for intercepting and separating hydrophobic impurities in the incoming water.

[0017] An interception agglomeration oil removal tank is used for intercepting and separating agglomerated oil in the incoming water of the enrichment interception oil removal tank.

[0018] The condensate tank, the condensate booster pump, the magnetic gain composite iron removal barrier tank, the enrichment interception oil removal tank, and the interception agglomeration oil removal tank are sequentially connected through pipelines.

[0019] Preferably, the inner cavity of the magnetic gain composite iron removal barrier tank is divided into an upper chamber and a lower chamber, the upper chamber is provided with an electromagnetic iron removal device, and the lower chamber is provided with a porous ceramic filter layer, the particle size of the porous ceramic filter layer is 0.3-0.5 mm, and the filling height is 600-800 mm.

[0020] Preferably, the output end of the condensate booster pump is communicated with the water inlet of the top of the magnetic gain composite iron removal barrier tank through a pipeline, the pipeline is provided with an upper chamber water inlet valve, the water outlet of the bottom of the magnetic gain composite iron removal barrier tank is communicated with the enrichment interception oil removal tank through a pipeline, the pipeline is provided with a lower chamber water outlet valve and an interception oil removal tank water inlet valve, the two pipelines are communicated through a second pipeline, the two ends of the second pipeline are respectively provided with an upper chamber backwashing water outlet valve and a forward washing water outlet valve, the middle part has an output end communicated with the lower chamber, the output end is provided with a lower chamber backwashing water outlet valve, the output end pipeline of the condensate booster pump is provided with a third pipeline, the third pipeline is communicated with the lower chamber and the water outlet pipeline through two pipelines, and the two pipelines are respectively provided with a lower chamber backwashing water inlet valve and an upper chamber backwashing water inlet valve.

[0021] Preferably, the pipeline connecting the enrichment interception oil removal tank and the interception agglomeration oil removal tank is provided with an enrichment interception oil removal tank water outlet valve, the top of the enrichment interception oil removal tank is provided with an oil collector, the bottom is provided with a first blowdown valve, the other end of the oil collector is provided with a first oil discharge valve through a pipeline, and the other ends of the first oil discharge valve and the first blowdown valve are communicated with a second blowdown pipe.

[0022] Preferably, the enrichment interception oil removal tank is provided with an HK interception oil removal film.

[0023] Preferably, the interception coagulation oil removal tank is of a double-chamber structure, the upper chamber is provided with an HK interception oil removal film, and the lower chamber is provided with an activated carbon fiber adsorption composite filler layer, the top of the interception coagulation oil removal tank is provided with a second oil discharge valve, the upper and lower sides are respectively provided with a second and a third sewage discharge valve, and the other side of the second oil discharge valve, the second sewage discharge valve and the third sewage discharge valve is communicated with a third sewage discharge pipe.

[0024] Preferably, the bottom of the interception coagulation oil removal tank is provided with a discharge pipe, and the discharge pipe is provided with a water outlet valve.

[0025] Compared with the prior art, the process condensate water oil and iron removal treatment device has the following beneficial effects:

[0026] The process condensate water oil and iron removal treatment device can effectively remove oil and other impurities in the water body, has high overall oil and iron removal precision, stable water quality, strong impact load resistance, simple operation and low operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The utility model provides a kind of process condensate water oil and iron removal treatment device's composition schematic view.

[0028] In the drawing: 1, condensate tank; 2, condensate booster pump; 3, magnetic gain composite iron removal barrier tank; 4, enrichment interception oil removal tank; 5, interception coagulation oil removal tank; 6, upper chamber water inlet valve; 7, upper chamber backwash drain valve; 8, upper chamber backwash water inlet valve; 9, positive washing drain valve; 10, lower chamber backwash drain valve; 11, lower chamber backwash water inlet valve; 12, lower chamber water outlet valve; 13, enrichment interception oil removal tank water inlet valve; 14, enrichment interception oil removal tank water outlet valve; 15, first oil discharge valve; 16, oil collector; 17, first sewage discharge valve; 18, second oil discharge valve; 19, second sewage discharge valve; 20, third sewage discharge valve; 21, water outlet valve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0030] Reference Figure 1 A process condensate water oil and iron removal treatment device, comprising:

[0031] Condensate tank 1 for collecting condensate water;

[0032] The magnetic gain composite iron-removing barrier tank 3 is used for magnetizing, adsorbing, agglomerating and coagulating iron particles and colloids in the condensed water and filtering suspended impurities in the condensed water;

[0033] The condensed water booster pump 2 is used for pumping condensed water from the water tank and sending the condensed water into the magnetic gain composite iron-removing barrier tank 3 after pressurization;

[0034] The enrichment interception oil-removing tank 4 is used for intercepting and separating hydrophobic impurities in the incoming water.

[0035] The interception agglomeration oil-removing tank 5 is used for intercepting and separating the agglomerated oil in the incoming water of the enrichment interception oil-removing tank 4.

[0036] The condensed water tank 1, the condensed water booster pump 2, the magnetic gain composite iron-removing barrier tank 3, the enrichment interception oil-removing tank 4 and the interception agglomeration oil-removing tank 5 are sequentially connected through pipelines.

[0037] The magnetic gain composite iron-removing barrier tank 3, the enrichment interception oil-removing tank 4 and the interception agglomeration oil-removing tank 5 constitute an oil-removing and iron-removing system of the device.

[0038] In the embodiment, the inner cavity of the magnetic gain composite iron-removing barrier tank 3 is divided into an upper chamber and a lower chamber, the upper chamber is provided with an electromagnetic iron-removing device, and the lower chamber is provided with a porous ceramic filter layer, the particle size of the porous ceramic filter is 0.3-0.5 mm, and the filling height is 600-800 mm.

[0039] In the embodiment, the output end of the condensed water booster pump 2 is communicated with the water inlet of the top of the magnetic gain composite iron-removing barrier tank 3 through a pipeline, and the pipeline is provided with an upper chamber water inlet valve 6, the water outlet of the bottom of the magnetic gain composite iron-removing barrier tank 3 is communicated with the enrichment interception oil-removing tank 4 through a pipeline, and the pipeline is provided with a lower chamber water outlet valve 12 and an interception oil-removing tank water inlet valve, and the two pipelines are communicated through a second pipeline, the two ends of the second pipeline are respectively provided with an upper chamber backwashing drainage valve 7 and a forward washing drainage valve 9, the middle part has an output end communicated with the lower chamber, and the output end is provided with a lower chamber backwashing drainage valve 10, the second pipeline can be directly used for sewage discharge, the output end pipeline of the condensed water booster pump 2 is provided with a third pipeline, the third pipeline is communicated with the lower chamber and the pipeline output by the water outlet through two pipelines, and the two pipelines are respectively provided with a lower chamber backwashing water inlet valve 11 and an upper chamber backwashing water inlet valve 8.

[0040] In the embodiment, the pipeline connecting the enrichment interception oil-removing tank 4 and the interception agglomeration oil-removing tank 5 is provided with an enrichment interception oil-removing tank water outlet valve 14, the top of the enrichment interception oil-removing tank 4 is provided with an oil collector 16, the bottom is provided with a first sewage valve 17, and the other end of the oil collector 16 is provided with a first oil discharge valve 15 through a pipeline, the other end of the first oil discharge valve 15 and the first sewage valve 17 is communicated with a second sewage pipe, and the second sewage pipe is used for sewage discharge.

[0041] In the embodiment, the enrichment interception oil removal tank 4 is provided with an HK interception oil removal film.

[0042] In the embodiment, the interception coagulation oil removal tank 5 is of a double-chamber structure, the upper chamber is provided with an HK interception oil removal film, and the lower chamber is provided with an activated carbon fiber adsorption composite filler layer. The top of the interception coagulation oil removal tank 5 is provided with a second oil discharge valve 18 through a pipeline, and the upper and lower sides are respectively provided with a second blowdown valve 19 and a third blowdown valve 20 through pipelines. The other side of the second oil discharge valve 18, the second blowdown valve 19 and the third blowdown valve 20 is communicated with a third blowdown pipe for blowdown.

[0043] In the embodiment, the bottom of the interception coagulation oil removal tank 5 is provided with a discharge pipe, and the discharge pipe is provided with a water outlet valve 21.

[0044] In use, the condensed water first enters the magnetic gain composite iron removal barrier tank 3, which is an electromagnetic iron removal device and a barrier precision filter superimposed composite. The electromagnetic iron removal device at the upper part of the tank body (loaded with high polymer magnetic functional ceramic particle filler or having ferromagnetic (Fe3O4) or paramagnetic (Fe2O3) "iron oxide" particles, after applying a magnetic field, the high polymer magnetic functional ceramic filler or "iron oxide" particles are magnetized, and the filler layer evolves into a spatial framework stacked by densely interlaced high-energy magnetic adsorption poles in macroscopic view. When the condensed water containing trace iron flows through the magnetic field environment in the electromagnetic iron removal device, the iron oxide in the water is magnetized in the high-strength magnetic field and has a certain magnetism, and is adsorbed and intercepted by the high-energy magnetic adsorption poles on the filler. With the accumulation, coagulation and thickening of the amount of iron oxide adsorbed by each magnetic pole point in the filler layer of the electromagnetic iron removal device, when the adsorbed and coagulated iron oxide clumps are washed out of the electromagnetic iron removal device with water flow, they are easily filtered out) magnetizes, adsorbs, coagulates and condenses the iron particles and colloids in the condensed water. The lower barrier precision filter tank is loaded with fine active porous filter material (i.e. porous ceramic filter layer) with high contact filtration efficiency, which efficiently filters suspended impurities in the condensed water and iron oxide clumps washed out of the electromagnetic iron removal device. The device can also effectively intercept and filter suspended oil and most of the emulsified oil in the coagulated water, and plays a role in resisting and buffering large oil impact in the system.

[0045] The water from the magnetic gain composite iron removal barrier tank 3 enters the enrichment interception oil removal tank 4, which is provided with a HK interception membrane oil removal unit with high efficiency oil-water separation performance.

[0046] The lower chamber of the interception and coagulation oil removal tank 5 is provided with a high-performance composite adsorption filter (i.e. activated carbon fiber adsorption composite filler layer) as a security filter layer at the terminal of the system, so as to provide deep adsorption purification in protection mode in case of sudden large oil impact or other unexpected situations, and to ensure stable treatment effect of the system.

[0047] The enrichment interception oil removal tank 4 and the interception and coagulation oil removal tank 5 in the technical solution do not need backwashing in the effective material use cycle. The magnetic gain composite iron removal barrier tank 3 needs to be backwashed directly using the inlet water of the equipment in time, and the operation cycle of the equipment is about 7-15 days, without the need of a special backwashing water pump.

[0048] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A process condensate oil and iron removal treatment apparatus, characterized by: It comprises: a condensate tank for collecting condensate water; a magnetic gain composite iron-removing barrier tank for magnetizing, adsorbing and agglomerating iron-based particles and colloids in the condensate water and filtering suspended impurities in the condensate water; a condensate water booster pump for pumping the condensate water from the tank and sending it into the magnetic gain composite iron-removing barrier tank after pressurization; an enrichment interception oil-removing tank for intercepting and separating hydrophobic impurities in the incoming water; an interception agglomeration oil-removing tank for intercepting and separating agglomerated oil in the incoming water of the enrichment interception oil-removing tank; the condensate tank, the condensate water booster pump, the magnetic gain composite iron-removing barrier tank, the enrichment interception oil-removing tank and the interception agglomeration oil-removing tank are connected in sequence by pipelines.

2. The device for removing oil and iron from process condensate according to claim 1, characterized in that: The inner cavity of the magnetic gain composite iron-removing barrier tank is divided into an upper chamber and a lower chamber, the upper chamber is provided with an electromagnetic iron-removing device, and the lower chamber is provided with a porous ceramic filter material layer, the particle size of the porous ceramic filter material is 0.3-0.5mm, and the filling height is 600-800mm.

3. The process condensate oil and iron removal treatment device according to claim 1, characterized in that: The output end of the condensate water booster pump is communicated with the water inlet of the top of the magnetic gain composite iron-removing barrier tank through a pipeline, and the pipeline is provided with an upper chamber water inlet valve, the water outlet of the bottom of the magnetic gain composite iron-removing barrier tank is communicated with the enrichment interception oil-removing tank through a pipeline, and the pipeline is provided with a lower chamber water outlet valve and an interception oil-removing tank water inlet valve, and the two pipelines are communicated through a second pipeline, the two ends of the second pipeline are respectively provided with an upper chamber backwashing drainage valve and a forward washing drainage valve, the middle part has an output end communicated with the lower chamber, and the output end is provided with a lower chamber backwashing drainage valve, and the output end pipeline of the condensate water booster pump is communicated with a third pipeline, the third pipeline is communicated with the lower chamber and the water outlet pipeline through two pipelines, and the two pipelines are respectively provided with a lower chamber backwashing water inlet valve and an upper chamber backwashing water inlet valve.

4. The process condensate oil and iron removal treatment device according to claim 3, characterized in that: The pipeline connecting the enrichment interception oil-removing tank and the interception agglomeration oil-removing tank is provided with an enrichment interception oil-removing tank water outlet valve, the top of the enrichment interception oil-removing tank is provided with an oil collector, the bottom is provided with a first blowdown valve, and the other end of the oil collector is provided with a first oil discharge valve through a pipeline, and the other ends of the first oil discharge valve and the first blowdown valve are communicated with a second blowdown pipe.

5. The process condensate oil and iron removal treatment device according to claim 4, characterized in that: The enrichment interception oil-removing tank is provided with an interception oil-removing membrane.

6. The process condensate oil and iron removal treatment device according to claim 1, characterized in that: The interception agglomeration oil-removing tank has a double-chamber structure, the upper chamber is provided with an interception oil-removing membrane, and the lower chamber is provided with an activated carbon fiber adsorption composite filler layer, the top of the interception agglomeration oil-removing tank is provided with a second oil discharge valve, the upper and lower sides are respectively provided with a second blowdown valve and a third blowdown valve, and the other sides of the second oil discharge valve, the second blowdown valve and the third blowdown valve are communicated with a third blowdown pipe.

7. The process condensate oil and iron removal treatment device according to claim 1, characterized in that: The bottom of the interception agglomeration oil-removing tank is provided with a discharge pipe, and the discharge pipe is provided with a water outlet valve.

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